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Welcome to the homepage of Micro-Laboratory of Atmospheric Research and Geomatics Engineering (Micro-LARGE)

The publication list is updated on 8 August 2023.

 

To download the following as a PDF file, please click here.

The List of Journal Papers Published by Prof. George Zhizhao Liu’s

Micro-LARGE Laboratory

(As of 17 August 2023, Total IF: 415.344;

Mean IF of all the 89 SCI papers: 4.667; Mean IF of all the 111 papers: 3.742)

 

No.

Full Citation Information

Name of Journal

Impact Factor (IF)

J111

Xu, Jiafei*, Zhizhao Liu (✉️) (2023), Long-Term Calibration of Satellite-based All-Weather Precipitable Water Vapor Product from FengYun-3A MERSI Near-Infrared Bands from 2010 through 2017 in China, IEEE Transactions On Geoscience and Remote Sensing, published.

IEEE Transactions On Geoscience and Remote Sensing

8.2

J110

Donghe Zhang (✉️), Hongyu Gao, Zhizhao Liu, Shuji Sun, Yong-Qiang Hao, Zuo Xiao (2023), Revisiting the variation of the ionospheric irregularities in the low latitude region of China based on small regional geodetic GNSS station network, Space Weather, Accepted.

Space Weather

3.7

J109

Xu, Jiafei*, Zhizhao Liu (✉️) (2023), A Gradient Boosting Decision Tree Based Correction Model for AIRS Infrared Water Vapor Product, Geophysical Research Letters, accepted.

Geophysical Research Letters

5.2

J108

Gao, Rui*, Zhizhao Liu (✉️), Robert Odolinski, Qiang Jing, Jiantong Zhang, Hua Zhang, and Baocheng Zhang (✉️) (2023), Hong Kong-Zhuhai-Macao Bridge deformation monitoring using PPP-RTK with multipath correction method, GPS Solutions, accepted.

GPS Solutions

4.9

J107

Xu, Jiafei*, Zhizhao Liu (✉️) (2023),  Improving the Accuracy of MODIS Near-Infrared Water Vapor Product Under all Weather Conditions Based on Machine Learning Considering Multiple Dependence Parameters. IEEE Transactions on Geoscience and Remote Sensing, 61: 1–15. https://doi.org/10.1109/TGRS.2023.3252024.

IEEE Transactions on Geoscience and Remote Sensing

8.2

J106

Xue, Dabin*, Jian Yang (✉️), Zhizhao Liu (✉️), Shiwei Yu (2022), Examining the Economic Costs of the 2003 Halloween Storm Effects on the North Hemisphere Aviation Using Flight Data in 2019, Space Weather, Space Weather, 21(3): e2022SW003381. https://doi.org/10.1029/2022SW003381..

Space Weather

3.7

J105

Gong, Yangzhao*, Zhizhao Liu (✉️), Pak Wai Chan, and Kai Kwong Hon (2021), Assimilating GNSS PWV and radiosonde meteorological profiles to improve the PWV and rainfall forecasting performance from the Weather Research and Forecasting (WRF) model over the South China, Atmospheric Research, 286: 106677. https://doi.org/10.1016/j.atmosres.2023.106677.

Atmospheric Research

5.5

J104

Ning, Guicai*, Ming Luo, Xueyan Bi, Zhizhao Liu, Hui Zhang, Meng Huang, Xiaogang Huang, Yuanjian Yang, and Sijia Wu. 2023. “Large-Scale Moisture Transport and Local-Scale Convection Patterns Associated with Warm-Sector Heavy Rainfall over South China.” Atmospheric Research, 285 (April): 106637. https://doi.org/10.1016/j.atmosres.2023.106637.

Atmospheric Research

5.5

J103

Zhang, Shengkai, Li Gong, Wenliang Gao, Qi Zeng, Feng Xiao, Zhizhao Liu, Jintao Lei (2023), A weighted mean temperature model using principal component analysis for Greenland. GPS Solutions, 27(1): 57. https://doi.org/10.1007/s10291-022-01392-3

GPS Solutions

4.9

J102

Xu, Jiafei*, Zhizhao Liu (✉️) (2023),  A Back Propagation Neural Network-Based Calibration Approach for Sentinel-3 OLCI Near-Infrared Water Vapor Product. IEEE Geoscience and Remote Sensing Letters, 20, 1–5. https://doi.org/10.1109/LGRS.2023.3235983

IEEE Geoscience and Remote Sensing Letters

2.892

J101

Gong, Yangzhao*, Zhizhao Liu (✉️), Pak Wai Chan, and Kai Kwong Hon (2023),  Assimilating Sentinel-3 All-sky PWV Retrievals to Improve the WRF Forecasting Performance Over the South China. Journal of Geophysical Research: Atmospheres, 128(8): e2022JD037979. https://doi.org/10.1029/2022JD037979

Journal of Geophysical Research: Atmospheres

4.4

J100

Xu, Jiafei*, Zhizhao Liu (✉️) (2022), A Back Propagation Neural Network-Based Algorithm For Retrieving All-Weather Precipitable Water Vapor From MODIS NIR Measurements. IEEE Transactions on Geoscience and Remote Sensing, 60, 1–14. https://doi.org/10.1109/TGRS.2022.3219405

IEEE Transactions on Geoscience and Remote Sensing

8.2

J099

Gao Zhiqiu, Jianbin Zhang, Miao Yu, Zhizhao Liu, Ruoying Yin, Shaohui Zhou, Lian Zong, Guicai Ning, Xiaoze Xu, Yunqian Guo, Han Wei, Yuanjian Yang (2022), Role of water vapor modulation from multiple pathways in the occurrence of a record-breaking heavy rainfall event in China in 2021, Earth and Space Science, https://doi.org/10.1029/2022EA002357.

Earth and Space Science

3.1

J098

 Gao, Rui*, Zhizhao Liu, and Baocheng Zhang (2022), Ionosphere-weighted post-processing kinematic for airborne positioning with refined modeling of receiver phase biases and tropospheric zenith wet delays, GPS Solutions, 26, 113 (2022). https://doi.org/10.1007/s10291-022-01299-z.

GPS Solutions

4.9

J097

Xue, Dabin*, Jian Yang, Zhizhao Liu (✉️), Bing Wang (2022), An Optimized Solution to Long-Distance Flight Routes Under Extreme Cosmic Radiation. Space Weather, 20(12): e2022SW003264. https://doi.org/10.1029/2022SW003264.

Space Weather

3.7

J096

Xu, Jiafei*, Zhizhao Liu (✉️) (2023),   Water vapour products from ERA5, MERSI-II/FY-3D, OLCI/Sentinel-3A, OLCI/Sentinel-3B, MODIS/Aqua, and MODIS/Terra in Australia: a comparison against in-situ GPS water vapor data, Atmospheric Research, Quarterly Journal of the Royal Meteorological Society (QJRMS), 149, 1435–1458. https://doi.org/10.1002/qj.4467

Quarterly Journal of the Royal Meteorological Society (QJRMS)

8.9

J095

Xu, Jiafei*, Zhizhao Liu (✉️) (2022), A Linear Regression of Differential PWV Calibration Model to Improve the Accuracy of MODIS NIR All-weather PWV Products Based on Ground-based GPS PWV Data, IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, 15, 7929–7951. https://doi.org/10.1109/JSTARS.2022.3204823.

IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing

5.5

J094

Xu, Jiafei*, Zhizhao Liu (✉️) (2022), Enhanced all-weather precipitable water vapor retrieval from MODIS near-infrared bands using machine learning. International Journal of Applied Earth Observation and Geoinformation, 114, 103050. https://doi.org/10.1016/j.jag.2022.103050

International Journal of Applied Earth Observation and Geoinformation

7.5

J093

Xu, Jiafei*, Zhizhao Liu (✉️) (2022), Evaluation of Precipitable Water Vapor Product From MODIS and MERSI-II NIR Channels Using Ground- Based GPS Measurements Over Australia. IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, 15, 8744–8758. https://doi.org/10.1109/JSTARS.2022.3211879.

IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing

5.5

J092

Yu, Shiwei*, Zhizhao Liu (✉️), Tsz Cheung Lee (2021), Ionospheric Disturbances Observed from a Single GPS Station in Hong Kong During the Passage of Super Typhoon Hato in 2017, Space Weather, Vol. 20, Issue 1, https://doi.org/10.1029/2021SW002850

Space Weather

3.7

J091

Xue, Dabin*, Jian Yang, and Zhizhao Liu (✉️) (2022). Potential Impact of GNSS Positioning Errors on the Satellite-navigation-based Air Traffic Management. Space Weather. JCR: Q1, IF: 4.4. accepted.

Space Weather

3.7

J090

Gong, Yangzhao*, Zhizhao Liu (✉️), James H. Foster (2021), Evaluating the Accuracy of Satellite-based Microwave Radiometer PWV Products Using Shipborne GNSS Observations across the Pacific Ocean, IEEE Transactions on Geoscience and Remote Sensing (TGRS), accepted.

IEEE Transactions on Geoscience and Remote Sensing (TGRS)

8.2

J089

Xu, Jiafei*, Zhizhao Liu (✉️) (2021), Radiance-based Retrieval of Total Water Vapor Content from Sentinel-3A OLCI NIR Channels Using Ground-based GPS Measurements, International Journal of Applied Earth Observation and Geoinformation, Volume 104, 102586. https://doi.org/10.1016/j.jag.2021.102586, IF: 5.933

International Journal of Applied Earth Observation and Geoinformation

7.5

J088

Xu, Jiafei*, Zhizhao Liu (✉️) (2022), The First Validation of Sentinel-3 OLCI Integrated Water Vapor Products Using Reference GPS Data in Mainland China, IEEE Transactions on Geoscience and Remote Sensing (TGRS), 60, 1–17. https://doi.org/10.1109/TGRS.2021.3099168.

IEEE Transactions on Geoscience and Remote Sensing (TGRS)

8.2

J087

Yu, Shiwei*, Zhizhao Liu (✉️) (2021), The Ionospheric Condition and GPS Positioning Performance during the 2013 Tropical Cyclone Usagi Event in the Hong Kong Region, Earth Planets Space, 73(1): 66. https://doi.org/10.1186/s40623-021-01388-2.

Earth Planets Space

3

J086

He, Jia*, Zhizhao Liu (✉️) (2021), Water Vapor Retrieval from MERSI NIR Channels of Fengyun-3B Satellite Using Ground-based GPS Data, Remote Sensing of Environment, 258: 112384. https://doi.org/10.1016/j.rse.2021.112384, 11 pages

Remote Sensing of Environment

13.5

J085

Yu, Shiwei*, Zhizhao Liu (✉️) (2021), Tropical cyclone-induced periodical positioning disturbances during the 2017 Hato in the Hong Kong region, GPS Solutions, 25(3): 109. https://doi.org/10.1007/s10291-021-01112-3.

GPS Solutions

4.9

J084

He, Jia*, Zhizhao Liu (✉️) (2021), Applying the New MODIS-Based Precipitable Water Vapor Retrieval Algorithm Developed in the North Hemisphere to the South Hemisphere, IEEE Transactions on Geoscience and Remote Sensing (TGRS), vol. 60, pp. 1-12, 2022, Art no. 4100812, doi: 10.1109/TGRS.2021.3059876, 12 pages

IEEE Transactions on Geoscience and Remote Sensing (TGRS)

8.2

J083

Yu, Shiwei*, Zhizhao Liu (✉️) (2020), Temporal and Spatial Impact of the Precipitable Water Vapor on the GPS Relative Positioning during the Hato (2017) in Hong Kong and Taiwan Regions, Earth and Space Science, 8(4): e2020EA001371. https://doi.org/10.1029/2020EA001371. IF: 2.31

Earth and Space Science

3.1

J082

Gong, Yangzhao*, Zhizhao Liu (✉️) (2020), Evaluating the Accuracy of Jason-3 Water Vapor Product Using PWV Data from Global Radiosonde and GNSS Stations, IEEE Transactions on Geoscience and Remote Sensing (TGRS), 59(5): 4008–4017. https://doi.org/10.1109/TGRS.2020.3017761, 10 pages.

IEEE Transactions on Geoscience and Remote Sensing (TGRS)

8.2

J081

Li, Guozhu, Baiqi Ning, Yuichi Otsuka, Mangalathayil Ali Abdu, Prayitno Abadi, Zhizhao Liu, Luca Spogli, and Weixing Wan (2020), Challenges to equatorial plasma bubble and ionospheric scintillation short-term forecasting and future aspects in East and Southeast Asia, Surveys in Geophysics, DOI: 10.1007/s10712-020-09613-5.

Surveys in Geophysics

4.6

J080

He, Jia*, Zhizhao Liu (✉️) (2020), Refining MODIS NIR Atmospheric Water Vapor Retrieval Algorithm Using GPS-derived Water Vapor Data. IEEE Transactions on Geoscience and Remote Sensing (TGRS), 59(5): 3682–3694. https://doi.org/10.1109/TGRS.2020.3016655, 13 pages

IEEE Transactions on Geoscience and Remote Sensing (TGRS)

8.2

J079

Zhu, Mingchen*, Zhizhao Liu (✉️), Wusheng Hu (2020), Observing Water Vapor Variability during Three Super Typhoon Events in Hong Kong Based on GPS Water Vapor Tomographic Modeling Technique, Journal of Geophysical Research: Atmospheres, Vol. 125, No 15, https://doi.org/10.1029/2019JD032318, 20 pages.

Journal of Geophysical Research: Atmospheres

4.4

J078

He, Jia*, Zhizhao Liu (✉️) (2020), Water Vapor Retrieval from MODIS NIR Channels Using Ground-Based GPS Data. IEEE Transactions on Geoscience and Remote Sensing (TGRS), 58 (5): 3726–37, 12 pages, https://doi.org/10.1109/TGRS.2019.2962057

IEEE Transactions on Geoscience and Remote Sensing (TGRS)

8.2

J077

He, Jia*, Zhizhao Liu (✉️) (2019), Comparison of Satellite-derived Precipitable Water Vapor through Near-Infrared Remote Sensing Channels, IEEE Transactions on Geoscience and Remote Sensing (TGRS), 57(12):10252-10262, 11 pages, doi: 10.1109/TGRS.2019.2932847

IEEE Transactions on Geoscience and Remote Sensing (TGRS)

8.2

J076

Jungang Wang*, Zhizhao Liu (✉️) (2019), Improving GNSS PPP Accuracy through WVR PWV Augmentation, Journal of Geodesy, 93(9):1685–1705, 21 pages, https://doi.org/10.1007/s00190-019-01278-2

Journal of Geodesy

4.4

J075

Wang, Ling, Xiuqing Hu, Yupeng Luo, Zhizhao Liu, Min Min (2019), Selection and Characterization of Glaciers on the Tibetan Plateau as Potential Pseudo-Invariant Calibration Sites, IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing (JSTARS), 12(2):424–436, 13 pages. doi: 10.1109/JSTARS.2018.2890672

IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing

5.5

J074

Tian, Yumiao, Zhizhao Liu (✉️), Maorong Ge, Frank Neitzel (2019), Multi‑dimensional particle filter-based estimation of inter-system phase biases for multi-GNSS real-time integer ambiguity resolution, Journal of Geodesy, 93(7):1073–1087, 15 pages. https://doi.org/10.1007/s00190-018-01226-6.

Journal of Geodesy

4.4

J073

Yu, Tao (✉️), Mingyuan Li, Chunliang Xia, Xiaomin Zuo, Zhizhao Liu and Biqiang Zhao (2018), A new method for deriving equatorial plasma bubble velocity by tracing OI 630 nm all-sky images, Journal of Geophysical Research: Space Physics, 123, 9619–9633, 15 pages. https://doi.org/10.1029/2018JA025332. This paper won the award of Ten Major Scientific and Application Achievements of China's Meridian Project in 2018” awarded by National Space Weather Science Center, Chinese Academy of Sciences (CAS), China, 21 January 2019

Journal of Geophysical Research: Space Physics

2.8

J072

Xiaomin Luo, Yidong Lou, Qinqin Xiao, Shengfeng Gu, Biyan Chen and Zhizhao Liu (2018), Investigation of ionospheric scintillation effects on BDS precise point positioning at low-latitude regions, GPS Solutions, 22:63, 12 pages

GPS Solutions

4.9

J071

Chen, Biyan, Wujiao Dai, Zhizhao Liu, Lixin Wu, Cuilin Kuang, and Minsi Ao (2018), Constructing a Precipitable Water Vapor Map from Regional GNSS Network Observations without Collocated Meteorological Data. Atmospheric Measurement Techniques, 11(9):5153–5166, 14 pages. https://doi.org/10.5194/amt-2018-83

Atmospheric Measurement Techniques

3.8

J070

Yang, Zhe*, Zhizhao Liu (✉️) (2017), Low-Latitude Ionospheric Density Irregularities and Associated Scintillations Investigated by Combining COSMIC RO and Ground-Based GPS Observations over a Solar Active Period, Journal of Geophysical Research: Space Physics, 123:3998–4014, 17 pages. doi: 10.1029/2017JA024199

Journal of Geophysical Research: Space Physics

2.8

J069

Tian, Yumiao*, Zhizhao Liu (✉️), Maorong Ge, Frank Neitzel (2017), Determining inter-system bias of GNSS signals with narrowly spaced frequencies for GNSS positioning, Journal of Geodesy, 92(8):873–887, 15 pages, DOI: 10.1007/s00190-017-1100-4

Journal of Geodesy

4.4

J068

Sanjay Kumar*, Wu Chen, Mingli Chen, Zhizhao Liu and R.P. Singh (2017), Thunderstorm/Lightning induced ionospheric perturbation: An observation from equatorial and low latitude stations around Hong Kong, Journal of Geophysical Research: Space Physics, 122:9032–9044, 13 pages, doi:10.1002/2017JA023914

Journal of Geophysical Research: Space Physics

2.8

J067

Biyan Chen*, Zhizhao Liu (✉️) (2016), Global Water Vapor Variability and Trend from the Latest 36-Year (1979 to 2014) Data of ECMWF and NCEP Reanalyses, Radiosonde, GPS and Microwave Satellite, Journal of Geophysical Research: Atmospheres, 121:11,442–11,462, 21 pages. doi:10.1002/2016JD024917.

Journal of Geophysical Research: Atmospheres

4.4

J066

Kumar, Sanjay*, Wu Chen, Zhizhao Liu, Shengyue Ji (2016), Effects of solar and geomagnetic activity on the occurrence of equatorial plasma bubbles over Hong Kong, Journal of Geophysical Research: Space Physics, 121:9164–9178, 15 pages, doi:10.1002/2016JA022873.

Journal of Geophysical Research: Space Physics

2.8

J065

Yu, Tao*, Chunliang Xia, Xiaomin Zuo, Cong Huang, Tian Mao, Libo Liu, Zhizhao Liu (2016), A comparison of mesospheric winds measured by Fabry Perot interferometer and Meteor Radar over Center China, Journal of Geophysical Research: Space Physics, 121:10,037–10,051, 15 pages. doi: 10.1002/2016JA022997

Journal of Geophysical Research: Space Physics

2.8

J064

Yang, Zhe* and Zhizhao Liu (✉️) (2017), Investigating the Inconsistency of Ionospheric ROTI Indices Derived from GPS Modernized L2C and Legacy L2 P(Y) Signals at Low-Latitude Regions, GPS Solutions, 21(2):783–796, 14 pages, doi:10.1007/s10291-016-0568-3.

GPS Solutions

4.9

J063

Yang, Zhe*, Zhizhao Liu (✉️) (2016), Observational Study of Ionospheric Irregularities and GPS Scintillations Associated with the 2012 Tropical Cyclone Tembin Approaching Hong Kong, Journal of Geophysical Research: Space Physics, 121:4705–4717, 13 pages, doi:10.1002/2016JA022398.

Journal of Geophysical Research: Space Physics

2.8

J062

Zhang, Bochen, Xiaoli Ding, Wu Zhu, Chisheng Wang, Lei Zhang, and Zhizhao Liu. (2016), Mitigating Ionospheric Artifacts in Coseismic Interferogram Based on Offset Field Derived From ALOS-PALSAR Data, IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, 9(7):3050–3059, 10 pages. doi:10.1109/JSTARS.2016.2533441.

IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing

5.5

J061

Zhao, Qile, Guangxing Wang (✉️), Zhizhao Liu (✉️), Zhigang Hu, Zhiqiang Dai, and Jingnan Liu (2016). Analysis of BeiDou Satellite Measurements with Code Multipath and Geometry-Free Ionosphere-Free Combinations. Sensors, 16(1):123, 15 pages. doi:10.3390/s16010123.

Sensors

3.9

J060

Shi, Chuang, Lei Fan, Min Li, Zhizhao Liu, Shengfeng Gu, Shiming Zhong, and Weiwei Song (2015), An Enhanced Algorithm to Estimate BDS Satellite’s Differential Code Biases, Journal of Geodesy, 90(2):161–177, 17 pages. doi:10.1007/s00190-015-0863-8.

Journal of Geodesy

4.4

J059

Chen, Biyan* and Zhizhao Liu (✉️) (2015), A Comprehensive Evaluation and Analysis of the Performances of Multiple Tropospheric Models in China Region, IEEE Transactions on Geoscience and Remote Sensing (TGRS), 54(2):663–678, 16 pages. doi:10.1109/TGRS.2015.2456099.

IEEE Transactions on Geoscience and Remote Sensing (TGRS)

8.2

J058

Zhe Yang*, Zhizhao Liu (✉️) (2015), Correlation between ROTI and Ionospheric Scintillation Indices using Hong Kong low-latitude GPS data. GPS Solutions, 20(4): 815–824, 10 pages, doi:10.1007/s10291-015-0492-y.

GPS Solutions

4.9

J057

Liu, Zhizhao (✉️) and Zhe Yang* (2015), Anomalies in broadcast ionospheric coefficients recorded by GPS receivers over the past two solar cycles (1992-2013). GPS Solutions, 20(1):23–37, 15 pages, doi:10.1007/s10291-015-0448-2.

GPS Solutions

4.9

J056

Chen, Biyan* and Zhizhao Liu (✉️) (2014), Voxel-optimized regional water vapor tomography and comparison with radiosonde and numerical weather model. Journal of Geodesy, 88(7):691703, 13 pages, doi: 10.1007/s00190-014-0715-y

Journal of Geodesy

4.4

J055

Liu, Zhizhao (✉️), Biyan Chen*, Sai Tick Chan, Yunchang Cao, Yang Gao, Kefei Zhang, and Janet Nichol (2014), Analysis and modeling of water vapor and temperature changes in Hong Kong using a 40-year radiosonde record: 1973-2012. International Journal of Climatology, 35(3):462–474, 13 pages, doi:10.1002/joc.4001

International Journal of Climatology

3.9

J054

Liu, Zhizhao, Man Sing Wong*, Janet Elizabeth Nichol, and P.W. Chan (2013), A multi-sensor study of water vapor from Radiosonde, MODIS and AERONET: a case study of Hong Kong. International Journal of Climatology, 33(1):109–120, 12 pages, doi: 10.1002/joc.3412

International Journal of Climatology

3.9

J053

Xu, Rui*, Zhizhao Liu (✉️), Wu Chen (2015), Improved FLL-assisted PLL with in-phase pre-filtering to mitigate amplitude scintillation effects. GPS Solutions, 19(2):263–276, 14 pages, doi: 10.1007/s10291-014-0385-5

GPS Solutions

4.9

J052

Liu, Zhizhao (✉️), Min Li*, Weikun Zhong*, Mansing Wong (2013), An Approach to Evaluate the Absolute Accuracy of WVR Water Vapor Measurements Inferred from Multiple Water Vapor Techniques. Journal of Geodynamics, 72:86–94, 9 pages, doi:10.1016/j.jog.2013.09.002, Nominated for the World Meteorological Organization (WMO) “Norbert Gerbier-MUMM International Award for 2015”, by the Hong Kong Observatory, The Government of Hong Kong Special Administrative Region (HKSAR).

Journal of Geodynamics

2.3

J051

Luo, Weihua*, Zhizhao Liu (✉️) and Min Li* (2013), A Preliminary Evaluation of the Performance of Multiple Ionospheric Models in Low- and Mid-Latitude Regions of China in 2010-2011. GPS Solutions, 18(2):297–308, 12 pages. doi: 10.1007/s10291-013-0330-z

GPS Solutions

4.9

J050

Li, Zhongbin*, Zhizhao Liu, and Wenzhong Shi (2014), Semiautomatic Airport Runway Extraction Using a Line-Finder-Aided Level Set Evolution. IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing (JSTARS), 7(12):4738–4749, 12 pages, doi: 10.1109/JSTARS.2014.2298332

IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing

5.5

J049

Liu, Zhizhao (✉️), Shengyue Ji*, Wu Chen, and Xiaoli Ding (2013), New Fast Precise Kinematic Surveying Method Using A Single Dual-Frequency GPS Receiver, Journal of Surveying Engineering (ASCE, American Society of Civil Engineers), 139(1):1933, 15 pages, DOI: 10.1061/(ASCE)SU.1943-5428.0000092

Journal of Surveying Engineering

1.576

J048

Cai, Changsheng, Zhizhao Liu (✉️), Pengfei Xia, Wujiao Dai (2013), Cycle-slip detection and repair for undifferenced GPS observations under high ionospheric activity, GPS Solutions, 17(2):247–260, 14 pages, DOI: 10.1007/s10291-012-0275-7 (ranked 2nd in the top five most downloaded papers in the journal with 339 downloads within 90 days of its online publication. To the author's knowledge, this innovative method has been used by researchers in world's leading research institutions such as Helmholtz Centre Potsdam GeoForschungsZentrum (GFZ) German Research Centre for Geosciences, Germany, Space Star Technology Co., Ltd, 5th Research Academy, China Aerospace Science and Technology Corporation.)

GPS Solutions

4.9

J047

Liu, Zhizhao (✉️)(2011), A New Automated Cycle Slip Detection and Repair Method for a Single Dual-Frequency GPS Receiver, Journal of Geodesy, 85(3):171–183, 13 pages, DOI 10.1007/s00190-010-0426-y (ranked 3rd as one of the top five most downloaded papers in the journal with 308 downloads within 90 days of its online publication, in addition to the downloads directly from author’s personal website. This method so far has been implemented by researchers at 10+ research groups in UK, China and Canada Universities, including University of New Brunswick (Canada), University of Calgary (Canada), Imperial College London (UK), Wuhan University (China), Peking University (China), Beijing University of Aeronautics and Astronautics (China), Central South University (China), Hohai University (China), Chinese University of Mining Technology (China), The PLA Information Engineering University (China).)

Journal of Geodesy

4.4

J046

Tang, Xu, Zhizhao Liu, Gethin Wyn Roberts, Craig Matthew Hancock (2022), PPP-derived tropospheric ZWD augmentation from local CORS network tested on bridge monitoring points, Advances in Space Research, Vol 69, Issue 10, Pages 3633-3643

Advances in Space Research

2.6

J045

Xue, Dabin*, Zhizhao Liu, Bing Wang, Jian Yang (✉️) (2021), Impacts of COVID-19 on aircraft usage and fuel consumption: a case study on four Chinese international airports, Journal of Air Transport Management, 95: 102106. https://doi.org/10.1016/j.jairtraman.2021.102106

Journal of Air Transport Management

6

J044

Liu, Zhizhao (✉️), Zhe Yang* (✉️), Dongyang Xu, Y. Jade Morton (2019), On Ionospheric Irregularities Characterized by Inconsistent ROTI Derived from Multi-Constellation GNSS Measurements Based on Globally Distributed GNSS Receivers, Radio Science, 54(3):215–232, 18 pages. https://doi.org/10.1029/2018RS006596

Radio Science

1.678

J043

Luo, Xiaomin, Zhizhao Liu (✉️), Yidong Lou (✉️), Shengfeng Gu, Biyan Chen (2017), A Study of Multi-GNSS Ionospheric Scintillation and Cycle-Slip over Hong Kong Region for Moderate Solar Flux Conditions. Advances in Space Research, 60(5):1039–1053, 15 pages, doi: 10.1016/j.asr.2017.05.038

Advances in Space Research

2.6

J042

Biyan Chen*, Zhizhao Liu (✉️), Wai-Kin Wong, Woo-Wang Chun (2017), Detecting Water Vapor Variability During Heavy Precipitation Events in Hong Kong Using the GPS Tomographic Technique, Journal of Atmospheric and Oceanic Technology, 34(5):1001–1019, 19 pages, doi: 10.1175/JTECH-D-16-0115.1

Journal of Atmospheric and Oceanic Technology

2.2

J041

Chen, Biyan*, Zhizhao Liu (✉️) (2016), Assessing the Performance of Troposphere Tomographic Modeling Using Multi-Source Water Vapor Data During Hong Kong’s Rainy Season from May to October 2013, Atmospheric Measurement Techniques (AMT), 9(10):5249–5263, 15 pages, https://doi.org/10.5194/amt-9-5249-2016

Atmospheric Measurement Techniques

3.8

J040

Song, Aotian, Lin Lu, Zhizhao Liu, Man Sing Wong (2016), A Study of Incentive Policies for Building-Integrated Photovoltaic Technology in Hong Kong. Sustainability, 8(8):769, 21 pages. doi:10.3390/su8080769

Sustainability

3.9

J039

Wong, Man Sing, Rui Zhu, Zhizhao Liu, Lin Lu, Chung Ho Lo, Zhaoqin Tang (2016), Estimation of Hong Kong’s solar energy potential using GIS and remote sensing technologies, Renewable Energy, 99:325–335, 11 pages, doi:10.1016/j.renene.2016.07.003

Renewable Energy

8.7

J038

Xu, Rui*, Zhizhao Liu (✉️) and Wu Chen (2015), Multi-PLL with two-stage fusion to mitigate ionospheric scintillation effects on GPS receivers, Radio Science, 50(7):630–641, 12 pages, DOI: 10.1002/2015RS005664

Radio Science

1.678

J037

Wong, Man Sing, Xiaomeng Jin, Zhizhao Liu, Janet Elizabeth Nichol, Shirong Ye, Peng Jiang, and P.W. Chan (2015), Geostationary satellite observation of precipitable water vapor using an Empirical Orthogonal Function (EOF) based reconstruction technique over eastern China, Remote Sensing, 7(5):5879–5900, 12 pages. doi:10.3390/rs70505879

Remote Sensing

5

J036

Li, Min, Wenwen Li, Chuang Shi, Qile Zhao, Xing Su, Lizhong Qu, and Zhizhao Liu (2014), Assessment of Precipitable Water Vapor Derived from Ground-Based BeiDou Observations with Precise Point Positioning Approach. Advances in Space Research, 55(1):150–162, 13 pages, doi:10.1016/j.asr.2014.10.010

Advances in Space Research

2.6

J035

Weng, Duojie, Shengyue Ji, Wu Chen, Zhizhao Liu (2014), Assessment and Mitigation of Ionospheric Disturbance Effects on GPS Accuracy and Integrity. Journal of Navigation, 67(3):371–384, 14 pages. doi: 10.1017/S0373463314000046

Journal of Navigation

2.4

J034

Cai, Changsheng, Xiaomin Luo, Zhizhao Liu (✉️) and Qinqin Xiao (2014), Galileo Signal and Positioning Performance Analysis Based on Four IOV Satellites. Journal of Navigation, 67(5):810–824, 15 pages, doi: 10.1017/S037346331400023X

Journal of Navigation

2.4

J033

Cai, Changsheng, Zhizhao Liu (✉️) and Xiaomin Luo (2013), Single-frequency Ionosphere-free Precise Point Positioning Using Combined GPS and GLONASS Observations. Journal of Navigation, 66(3): 417–434, 18 pages. doi:10.1017/S0373463313000039

Journal of Navigation

2.4

J032

Li, Zhongbin*, Zhizhao Liu and Wenzhong Shi (2013), A Fast Level Set Algorithm for Building Roof Recognition From High Spatial Resolution Panchromatic Images. IEEE Geoscience and Remote Sensing Letters, 11(4):743–747, 5 pages. doi: 10.1109/LGRS.2013.2278342

IEEE Geoscience and Remote Sensing Letters

2.892

J031

Xia, Pengfei, Changsheng Cai (✉️), Zhizhao Liu (✉️) (2013), A troposphere tomography approach based on combined non-iterative and iterative reconstructions using GPS and COSMIC occultation data. Annales Geophysicae, 31(10):1805–1815, 11 pages, doi:10.5194/angeo-31-1805-2013

Annales Geophysicae

1.9

J030

Yu, Shiwei and Zhizhao Liu (✉️) (2021), Feasibility Analysis of GNSS-based Ionospheric Observation on a Fast-moving Train Platform (GIFT), Satellite Navigation, Vol 2, No 1.

Satellite Navigation

0

J029

Xu, Jiafei and Zhizhao Liu (✉️) (2021), Improvement of Integrated Water Vapor Products from Sentinel-3 OLCI NIR Channels Using Ground-based GPS Measurements, The Journal of Global Positioning Systems, accepted in June 2021

The Journal of Global Positioning Systems

0

J028

Liu, Zhizhao (✉️), Yangzhao Gong and Letao Zhou (2020), Impact of China’s High Speed Train Window Glass on GNSS Signals and Positioning Performance, Satellite Navigation

Satellite Navigation

0

J027

Biyan Chen, Wu-Jiao Dai, Zhizhao Liu, Lixin Wu and Pengfei Xia (2018), Assessments of GMI-derived Precipitable Water Vapor Products over the South and East China Seas Using Radiosonde and GNSS, Advances in Meteorology, vol. 2018, Article ID 7161328, https://doi.org/10.1155/2018/7161328

Advances in Meteorology

2.9

J026

Liu, Zhizhao (✉️) (2018), A new approach for cycle slip detection and fix using single GPS receiver’s single satellite dual frequency data containing arbitrarily large pseudorange errors, Journal of Global Positioning Systems, 16(5), 21 pages, https://doi.org/10.1186/s41445-018-0013-8.

Journal of Global Positioning Systems

0

J025

Han, Joong-hee*, Zhizhao Liu (✉️), Jay Hyoun Kwon (2014), Investigating the Impact of Random and Systematic Errors on GPS Precise Point Positioning Ambiguity Resolution, Journal of the Korean Society of Surveying, Geodesy, Photogrammetry and Cartography, 32 (3): 233–244, 12 pages, http://dx.doi.org/10.7848/ksgpc.2014.32.3.233

Journal of the Korean Society of Surveying, Geodesy, Photogrammetry and Cartography

0

J024

Xu Rui*, Zhizhao Liu (✉️), Min Li*, Yu Morton and Wu Chen (2013), An Analysis of Low-Latitude Ionospheric Scintillation and Its Effects on Precise Point Positioning. Journal of Global Positioning Systems, 11(1): pp. 22–32, 11 pages.

Journal of Global Positioning Systems

0

J023

Liu, Zhizhao, Susan Skone and Yang Gao (2006). Assessment of Tomographic Modeling Performance Using GPS Data during October 2003 Ionospheric Storm, Radio Science, 41(1), RS1007, 12 pages, doi:10.1029/2004RS003236

Radio Science

1.678

J022

Liu, Zhizhao, Susan Skone and Yang Gao (2005). A study of TEC data precision inferred from GPS measurements, Earth Planets Space, 57(11):999–1007, 9 pages

Earth Planets Space

3

J021

Chen, Zhiyu, Yang Gao and Zhizhao Liu (2005). Evaluation of Solar Radio Bursts’ Effect on GPS Receiver Signal Tracking Within IGS Network, Radio Science, 40(3):RS3012, 11 pages, doi:10.1029/2004RS003066

Radio Science

1.678

J020

Liu, Zhizhao, Susan Skone, Yang Gao and Attila Komjathy (2004). Ionospheric Modeling Using GPS Data, GPS Solutions, 9(1):63–66, 4 pages, doi: 10.1007/s10291-004-0129-z (invited)

GPS Solutions

4.9

J019

Liu, Zhizhao and Yang Gao (2004). Development and Evaluation of a New 3D Ionospheric Modeling Method, NAVIGATION: Journal of The Institute of Navigation, 51(4):311–329, 19 pages

NAVIGATION: Journal of The Institute of Navigation

2.472

J018

Liu, Zhizhao, Yang Gao and Kongzhe Chen (2003). Precise Ionospheric TEC Prediction for Precise Point Positioning Using a Single-Frequency GPS Receiver, Geomatics Research Australasia, 80:73–87, 15 pages

Geomatics Research Australasia

0

J017

Liu, Zhizhao and Yang Gao (2003). Ionospheric TEC Predictions over A Local Area GPS Reference Network, GPS Solutions, 8(1):23–29, 7 pages

GPS Solutions

4.9

J016

Liu, Zhizhao and Yang Gao (2003). Performance Analysis of a 3D Ionosphere Tomographic Model, Wuhan University Journal of Natural Sciences, 8(2B):619–626, 8 pages

Wuhan University Journal of Natural Sciences

0

J015

Gao, Yang and Zhizhao Liu (2002). Precise Ionosphere Modeling Using Regional GPS Network Data, Journal of Global Positioning Systems, 1(1):18–24, 7 pages

Journal of Global Positioning Systems

0

J014

Gao, Yang, Xiangqian Liao and Zhizhao Liu (2002). Ionosphere Modeling Using Carrier Smoothed Ionosphere Observations from a Regional GPS Network, Geomatica, 56(2):97–106, 10 pages (PolyU Faculty and Department B-journal)

Geomatica

0

J013

Gao, Yang, Zhe Liu and Zhizhao Liu (2002). Internet-Based Real-Time Kinematic Positioning, GPS Solutions, 5(3):61–69, 9 pages

GPS Solutions

4.9

J012

Liu, Zhizhao, Jingnan Liu and Zhenghang Li (2000). The Application of GPS Technology to Meteorology, Bulletin of Surveying and Mapping, issue 2. (Chinese)

Bulletin of Surveying and Mapping

0

J011

Zhang, Quande, Zhizhao Liu and Zhanyi Sun (2000). Establishment of High Precision Geodetic Network in South China Sea, Bulletin of Surveying and Mapping, issue 8. (Chinese)

Bulletin of Surveying and Mapping

0

J010

Liu, Zhizhao, Zhenghang Li and Jingnan Liu (1998). The Improvement on Temporal Resolution of Deformation Analysis on Baseline Using Continuously Observed GPS Data, Journal of Wuhan Technical University of Surveying and Mapping, 23:73–75, 3 pages. (Chinese)

Journal of Wuhan Technical University of Surveying and Mapping

0

J009

Liu, Zhizhao, Zhenghang Li and Shaoquan Xu (1998). The Analysis of the Digital Characteristics of Multi-session Solutions of GPS Short Baselines, Journal of Wuhan Technical University of Surveying and Mapping, 23:69–72, 4 pages. (Chinese)

Journal of Wuhan Technical University of Surveying and Mapping

0

J008

Li, Zhenghang, Zhizhao Liu and Xiaohong Zhang (1998). The Effective Method to Improve the Precision of Monitoring Dam Deformation with GPS, Journal of Wuhan Technical University of Surveying and Mapping, 23:15–19, 5 pages. (Chinese)

Journal of Wuhan Technical University of Surveying and Mapping

0

J007

Li, Zhenghang, Zemin Wang, Zhizhao Liu and Jianjun Zhang (1998). Performing Submillimeter Level Positioning on Short Baselines with GPS, Journal of Wuhan Technical University of Surveying and Mapping, 23:9–14, 6 pages. (Chinese)

Journal of Wuhan Technical University of Surveying and Mapping

0

J006

Liu, Zhizhao and Zhenghang Li (1998). Precisely Positioning on Short Baseline using GPS Technology, Journal of Southern Institute of Metallurgy, 19(3):161–165, 5 pages. (Chinese)

Journal of Southern Institute of Metallurgy

0

J005

Liu, Zhizhao (1997). The Monitoring of Movement of the Antarctic Continent using GPS, WTUSM Bulletin of Science and Technology, 3:19–21, 3 pages. (Chinese)

WTUSM Bulletin of Science and Technology

0

J004

Liu, Zhizhao and Zhenghang Li (1997). Influence of Eccentricity of GPS Antenna on the Computation of Baseline, WTUSM Bulletin of Science and Technology, 2:10–13, 4 pages (Chinese)

WTUSM Bulletin of Science and Technology

0

J003

Liu, Zhizhao and Zhenghang Li (1997). Discussion on the Selection of Coefficient of LC Observation, Journal of Southern Institute of Metallurgy, 18(1):6–10, 5 pages. (Chinese)

Journal of Southern Institute of Metallurgy

0

J002

Li, Zhenghang, Zhizhao Liu and Zemin Wang (1996). Study on Monitoring Dam Deformation with GPS Positioning, Journal of Wuhan University of Hydraulic and Electric Engineering, 29(6):26-29, 4 pages. (Chinese)

Journal of Wuhan University of Hydraulic and Electric Engineering

0

J001

Li, Zhenghang, Zemin Wang, Zhizhao Liu and Jianjun Zhang (1996). Research on Precisely Positioning Technique on Short Baseline using GPS, Science and Technology Information of Surveying and Mapping, 2:31–36, 6 pages. (Chinese)

Science and Technology Information of Surveying and Mapping

0

 

The following funding agencies are highly appreciated for their kind supports.

(1)

http://www.a-tech.hk/philips2012/images/PolyU-Logo.jpg

The Hong Kong Polytechnic University (PolyU)

(2)

National Scientific Foundation of China (NSFC)

(3)

Hong Kong Research Grants Council (RGC)

(4)

http://www.croucher.org.hk/wp-content/themes/Croucher/images/headers/CF_logo_en.png

The Croucher Foundation

裘槎基金會

(5)

Central Policy Unit

Central Policy Unit, The Government of the Hong Kong Special Administrative Region

(6)

Innovation and Technology Fund  Innovation and Technology Commission  The Government of the Hong Kong Special Adminstrative Region

Innovation and Technology Fund, Innovation and Technology Commission, The Government of the Hong Kong Special Administrative Region

 

We are very appreciative of the following agencies having provided helps and assistances for Dr. Liu’s research group:

(1)

Lands Department - The Government of the Hong Kong Special Administrative Region

The Lands Department, The Government of the Hong Kong Special Administrative Region

(2)

Hong Kong Observatory logo

The Hong Kong Observatory (HKO), The Government of the Hong Kong Special Administrative Region

(3)

The Cartography and Cadastre Bureau, The Government of the Macao Special Administrative Region

(4)

回首頁http://www.smg.gov.mo/www/ComImages/title3.gif

The Macao Meteorological and Geophysical Bureau (SMG), The Government of the Macao Special Administrative Region

(5)

Company logo

The First Ferry, Hong Kong

 

 

This research group has a great interest in the ionosphere and space weather, and space geodesy. Currently the primary research is to study the coupling relationship of solar wind-magnetosphere-ionosphere using high precision GPS-inferred ionospheric data. More specifically the work includes global especially low-latitude and mid-latitude ionospheric characteristics, ionospheric irregularities and structures, ionospheric scintillation, monitoring of ionosphere and space weather, ionospheric modeling, methodology of using GPS to measure the ionosphere, and solar flare effects on ionosphere.

 

The ultimate goal of this research group is to reveal the relationship between the change of ionosphere and space weather and the change of other geophysical signals, and the impact on human being activities.

 

 

[May 26, 2013] Recently, Dr. Liu made a presentation of a paper titled “A Comparison of GNSS-based Ionospheric Scintillation Observations in North and South Hong Kong” at the recent 2013 Pacific PNT held at Honolulu, Hawaii, USA during April 22-25, 2013. This paper was coauthored by Zhizhao Liu, Rui Xu, Yu Morton, Jisheng Xu, Wouter Pelgrum, Steve Taylor, Wu Chen and Xiaoli Ding.

DSC01430.JPG

 

 

[06] We are very pleased to announce that Dr. Liu is to receive the Excellent Paper Award from the 2013 4th Chinese Satellite Navigation Conference (CSNC 2013) in Wuhan, China.

 

In the recent 2013 China Satellite Navigation Conference (CSNC) held May 15-17 in Wuhan, Dr. George Zhizhao Liu from the Department of Land Surveying & Geo-Informatics (LSGI) received the Excellent Paper Award for his paper “The First PPP-based GPS Water Vapor Real-Time Monitoring System in Pearl-River-Delta Region, China” co-authored with Research Associate Dr. Min Li. This paper presents their research findings of developing the first atmospheric water vapor real-time monitoring system for the Pearl-River-Delta (PRD) region using the latest Global Positioning System (GPS) Precise Point Positioning (PPP) technique. Based on their technique, now the amount of water vapor in the atmosphere over the PRD region can be quickly and accurately computed from GPS satellite signals. Since April 2012, the PolyU researchers have been supplying their atmospheric water vapor data to the meteorological agencies around the PRD region to support their daily services and research, including Hong Kong Observatory, Macao Meteorological and Geophysical Bureau, Guangdong Meteorological Bureau and Shenzhen Meteorological Bureau.

 

This year is the first time for CSNC to have the Excellent Paper Award. Dr. Liu was one of the nine award recipients out of 629 paper submissions (success rate: 1.43%). This research work was supported by the General Research Fund (GRF) of Hong Kong Research Grants Council (RGC).

 

[03] We are very pleased to announce that our project is successfully funded by National Scientific Foundation of China (NSFC), RMB700,000 over 2013-2016.

[02] We are very pleased to announce that our project is successfully funded by Hong Kong’s Research Grants Council (RGC), HK$ 988,087 over 2013-2015.

[01] We are very pleased to announce that our project is successfully funded by Hong Kong’s Research Grants Council (RGC), HK$ 654,686 over 2013-2014.

 

 

Advanced Research Laboratories/Instruments/Resources/Tools:

[04] Establishing the First GNSS Receiver and Radiosonde Collocation Observation Station in Hong Kong

Photo1, Photo2

 

[03] The First Atmospheric Water Vapor Real-Time Monitoring System (WVRMS) for Pearl-River-Delta (PRD) Region, China

We are very proud that the MicroLARGE laboratory has established the First Atmospheric Water Vapor Real-Time Monitoring System (WVRMS) for Pearl-River-Delta (PRD) Region. This WVRMS is based on the latest GPS/GNSS technique – Precise Point Positioning (PPP), which enables the fast and accurate retrieval of water vapor from GPS/GNSS signals. We adopted the PANDA software developed at Wuhan University, China to process the GPS/GNSS data, with some modifications.

This WVRMS system started to officially provide water vapor data to Hong Kong Observatory (HKO) since 19 April 2012.

You can browse the PRD region’s Real-time atmospheric water vapor data by clicking here….

 

In the world, there are only a limited number similar systems in operation with similar PPP technologies:

(1)      Japan’s GEONET system using GIPSY since 2007

(2)      German Helmholtz Association Project "GPS Atmosphere Sounding" GASP using EPOS since 2000

(3)      …..

 

[02] Hong Kong’s 2nd GNSS Scintillation Monitoring (GSM) Station

This state-of-the-art GNSS Scintillation Monitoring Station was established on 13 August 2012.

One NovAtel OEMV receiver is deployed at a Sha Tin station in North of Hong Kong.

This GSM station is about 21.7 km from PolyU campus.

Photo1, Photo2

[01] Hong Kong’s First GNSS Scintillation Monitoring (GSM) Station

This state-of-the-art GNSS Scintillation Monitoring Station was established on 24 May 2012.

One Septentrio PolaRxS receiver is deployed at a coastal station in South of Hong Kong.

This GSM station is about 21.7 km from PolyU campus.

Photo1, Photo2, Photo3, Photo4

 

Research Interests:

·       Space Weather and Storm time effect observation and analysis using GPS/GNSS and other techniques

·       GPS/GNSS accuracy and reliability and ionospheric/space weather effects

·       Ionospheric modeling using Ground-based and Space-based GPS/GNSS network

·       Global Navigation Satellite Systems (GNSS)

·       Algorithm development and software development for GNSS

·       Remote sensing of atmosphere using GNSS

·       Precise absolute and relative positioning using GNSS

Journal Publications:

 

Some submitted manuscripts:

Xu, Ying, Shengyue Ji, Lei Ye, Duojie Weng, Zhizhao Liu, Wu Chen (2013), Experimental Study on the Performance of Chinese BeiDou System, submitted to GPS Solutions, submitted July 10, 2013.

Mansing Wong, Xiaomeng Jin, Zhizhao Liu (), Janet Nichol (2013), Multi-sensor Study of Precipitable Water Vapor over Mainland China, to be submitted to Atmospheric Environment (Supported by B-Q28F, submitted August 2013)

Han, Joong-hee, Zhizhao Liu (), Jay Hyoun Kwon, Investigating the Impact of Random and Systematic Errors on GPS Precise Point Positioning Ambiguity Resolution, Journal of Navigation, (in review, submitted 06 Feb. 2013, Supported by 1-ZV6L, A-PJ63, A-PJ78, and RGC project F-PP0F)

Mansing Wong, Xiaomeng Jin, Zhizhao Liu (), Yuanling Zhou, Shirong Ye, Peng Jiang, and P.W. Chan, Estimation of Atmospheric Water Vapor using MTSAT Satellite Data, a Study in China (to be submitted, Supported by B-Q28F.)

Liu, Zhizhao (), Weihua Luo, and Jisheng Xu, The GPS TEC Variations Observed in the Equatorial Ionosphere Anomaly Regions prior to Three Large Earthquakes. Advances in Space Research (submitted 1 April 2013, Supported by 1-ZV6L, A-PJ63, and B-Q28F.)

 

Published Papers:

 

 

[037]

Biyan Chen and Zhizhao Liu (*) (2014), Voxel-Optimized Regional Water Vapor Tomography and Comparison with Radiosonde and Numerical Weather Model, Journal of Geodesy, accepted (IF: 2.808)

[036]

Zhizhao Liu (*), Biyan Chen, Sai Tick Chan, Yunchang Cao, Yang Gao, Kefei Zhang, and Janet Nichol (2014), Analysis and modeling of water vapor and temperature changes in Hong Kong using a 40-year radiosonde record: 1973-2012. International Journal of Climatology, accepted (IF: 2.479)

[035]

Cai, Changsheng, Xiaomin Luo, Zhizhao Liu (*) and Qinqin Xiao (2014), Galileo Signal and Positioning Performance Analysis Based on Four IOV Satellites. Journal of Navigation, accepted (IF: 0.618, Relative ranking within Categories: Engineering, marine 5/14)

[034]

Zhongbin Li, Zhizhao Liu, and Wenzhong Shi () (2014), Semiautomatic Airport Runway Extraction Using a Line-Finder-Aided Level Set Evolution, IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing (IEEE JSTARS), Accepted (2013 IF: 2.874) The source codes can be found here.

[033]

Xu, Rui, Zhizhao Liu (), Wu Chen (2013), Improved FLL-assisted PLL with In-phase Pre-filtering to Mitigate Amplitude Scintillation Effects, GPS Solutions, Accepted.

[032]

Xia, Pengfei, Changsheng Cai (), Zhizhao Liu () (2013), A troposphere tomography approach based on combined non-iterative and iterative reconstructions using GPS and COSMIC occultation data. Annales Geophysicae (submitted 31 March, 2013, Accepted, Supported by B-Q28F, IF: 1.518)

[032]

Liu, Zhizhao (), Min Li, Weikun Zhong, Mansing Wong (2013), An Approach to Evaluate the Absolute Accuracy of WVR Water Vapor Measurements Inferred from Multiple Water Vapor Techniques. Journal of Geodynamics (accepted, Supported by B-Q28F, IF: 2.967)

[031]

Li, Zhongbin, Zhizhao Liu and Wenzhong Shi (2013), A Fast Level Set Algorithm for Building Roof Recognition from High Spatial Resolution Panchromatic Images. IEEE Geoscience and Remote Sensing Letters. (accepted, Supported by B-Q28F)

[030]

Luo, Weihua, Zhizhao Liu () and Min Li (2013), A Preliminary Evaluation of the Performance of Multiple Ionospheric Models in Low- and Mid-Latitude Regions of China in 2010-2011. GPS Solutions, DOI 10.1007/s10291-013-0330-z

[029]

Cai, Changsheng, Zhizhao Liu () and Xiaomin Luo (2013), Single-frequency Ionosphere-free Precise Point Positioning Using Combined GPS and GLONASS Observations. Journal of Navigation, 66, 417–434. doi:10.1017/S0373463313000039

[028]

Xu Rui*, Zhizhao Liu (), Min Li, Yu Morton and Wu Chen (2013), An Analysis of Low-Latitude Ionospheric Scintillation and Its Effects on Precise Point Positioning. Journal of Global Positioning Systems, Vol. 11, No.1, 22-32

[027]

Liu, Zhizhao (), Shengyue Ji*, Wu Chen, and Xiaoli Ding (2013), New Fast Precise Kinematic Surveying Method Using A Single Dual-Frequency GPS Receiver, Journal of Surveying Engineering, 139(1), 19-33

[026]

Cai, Changsheng, Zhizhao Liu (), Pengfei Xia, Wujiao Dai (2013), Cycle-slip detection and repair for undifferenced GPS observations under high ionospheric activity, GPS Solutions, 17:247–260, DOI: 10.1007/s10291-012-0275-7 (ranked 2nd in the top five most downloaded papers in the journal with 339 downloads within 90 days of its online publication. To authors’ knowledge, this method so far has been implemented by researchers at Helmholtz Centre Potsdam GeoForschungsZentrum (GFZ) German Research Centre for Geosciences, Germany)

[025]

Liu, Zhizhao, Man Sing Wong, Janet Elizabeth Nichol, and P.W. Chan (2011), A multi-sensor study of water vapor from Radiosonde, MODIS and AERONET: a case study of Hong Kong, International Journal of Climatology, DOI: 10.1002/joc.3412 (SCI IF: 2.479)

[024]

Liu, Zhizhao (2011), A New Automated Cycle Slip Detection and Repair Method for a Single Dual-Frequency GPS Receiver, Journal of Geodesy, 85:171–183, DOI 10.1007/s00190-010-0426-y (ranked 3rd as one of the top five most downloaded papers in the journal with 308 downloads within 90 days of its online publication, in addition to the downloads directly from author’s personal website. This method so far has been implemented by researchers at ~10 research groups in UK, China and Canada Universities, including University of New Brunswick (Canada), University of Calgary (Canada), Imperial College London (UK), Wuhan University (China), Peking University (China), Beijing University of Aeronautics and Astronautics (China), Central South University (China), Hohai University (China).)

[023]

Liu, Zhizhao, Susan Skone and Yang Gao (2006). Assessment of Tomographic Modeling Performance Using GPS Data during October 2003 Ionospheric Storm, Radio Science, Vol. 41, RS1007, doi:10.1029/2004RS003236.

 

[022]

Liu, Zhizhao, Susan Skone and Yang Gao (2005). A study of TEC data precision inferred from GPS measurements, Earth Planets Space, Vol. 57, No. 11, pp. 999-1007.

 

[021]

Chen, Zhiyu, Yang Gao and Zhizhao Liu (2005). Evaluation of Solar Radio Bursts’ Effect on GPS Receiver Signal Tracking Within IGS Network, Radio Science, Vol. 40, RS3012, doi:10.1029/2004RS003066.

 

[020]

Liu, Zhizhao, Susan Skone, Yang Gao and Attila Komjathy (2004). Ionospheric Modeling Using GPS Data, GPS Solutions, Vol. 9, No. 1, doi: 10.1007/s10291-004-0129-z (invited).

 

[019]

Liu, Zhizhao and Yang Gao (2004). Development and Evaluation of a New 3D Ionospheric Modeling Method, NAVIGATION, Journal of The Institute of Navigation, Vol. 51, No. 4, pp. 311-329.

 

[018]

Liu, Zhizhao, Yang Gao and Kongzhe Chen (2003). Precise Ionospheric TEC Prediction for Precise Point Positioning Using a Single-Frequency GPS Receiver, Geomatics Research Australasia, No.80, June, 2004, pp. 73-87.

 

[017]

Liu, Zhizhao and Yang Gao (2003). Ionospheric TEC Predictions over A Local Area GPS Reference Network, GPS Solutions, Vol. 8, No. 1, pp. 23-29.

 

[016]

Liu, Zhizhao and Yang Gao (2003). Performance Analysis of a 3D Ionosphere Tomographic Model, Wuhan University Journal of Natural Sciences, Vol. 8, No. 2B, pp. 619-626.

 

[015]

Gao, Yang and Zhizhao Liu (2002). Precise Ionosphere Modeling Using Regional GPS Network Data, Journal of Global Positioning Systems, Vol. 1, No. 1, pp. 18-24.

 

[014]

Gao, Yang, Xiangqian Liao and Zhizhao Liu (2002). Ionosphere Modeling Using Carrier Smoothed Ionosphere Observations from a Regional GPS Network, Geomatica, Vol. 56, No. 2, pp.97-106.

 

[013]

Gao, Yang, Zhe Liu and Zhizhao Liu (2002). Internet-Based Real-Time Kinematic Positioning, GPS Solutions, Vol.5, No.3, pp. 61-69.

 

[012]

Liu, Zhizhao, Jingnan Liu and Zhenghang Li (2000). The Application of GPS Technology to Meteorology, Bulletin of Surveying and Mapping, No. 2. (Chinese)

 

[011]

Zhang, Quande, Zhizhao Liu and Zhanyi Sun (2000). Establishment of High Precision Geodetic Network in South China Sea, Bulletin of Surveying and Mapping, No. 8. (Chinese)

 

[010]

Liu, Zhizhao, Zhenghang Li and Jingnan Liu (1998). The Improvement on Temporal Resolution of Deformation Analysis on Baseline Using Continuously Observed GPS Data, Journal of Wuhan Technical University of Surveying and Mapping, Vol.23, pp.73-75. (Chinese)

 

[009]

Liu, Zhizhao, Zhenghang Li and Shaoquan Xu (1998). The Analysis of the Digital Characteristics of Multi-session Solutions of GPS Short Baselines, Journal of Wuhan Technical University of Surveying and Mapping, Vol.23, pp. 69-72. (Chinese)

 

[008]

Li, Zhenghang, Zhizhao Liu and Xiaohong Zhang (1998). The Effective Method to Improve the Precision of Monitoring Dam Deformation with GPS, Journal of Wuhan Technical University of Surveying and Mapping, Vol.23, pp. 15-19. (Chinese)

 

[007]

Li, Zhenghang, Zemin Wang, Zhizhao Liu and Jianjun Zhang (1998). Performing Submillimeter Level Positioning on Short Baselines with GPS, Journal of Wuhan Technical University of Surveying and Mapping, Vol.23, pp. 9-14. (Chinese)

 

[006]

Liu, Zhizhao and Zhenghang Li (1998). Precisely Positioning on Short Baseline using GPS Technology, Journal of Southern Institute of Metallurgy, Vol. 19, No.3, pp. 161-165. (Chinese)

 

[005]

Liu, Zhizhao (1997). The Monitoring of Movement of the Antarctic Continent using GPS, WTUSM Bulletin of Science and Technology, No.3, pp. 19-21. (Chinese)

 

[004]

Liu, Zhizhao and Zhenghang Li (1997). Influence of Eccentricity of GPS Antenna on the Computation of Baseline, WTUSM Bulletin of Science and Technology, No.2, pp. 10-13. (Chinese)

 

[003]

Liu, Zhizhao and Zhenghang Li (1997). Discussion on the Selection of Coefficient of LC Observation, Journal of Southern Institute of Metallurgy, Vol.18, No.1, pp. 6-10. (Chinese)

 

[002]

Li, Zhenghang, Zhizhao Liu and Zemin Wang (1996). Study on Monitoring Dam Deformation with GPS Positioning, Journal of Wuhan University of Hydraulic and Electric Engineering, Vol.29, No.6, pp. 26-29. (Chinese)

 

[001]

Li, Zhenghang, Zemin Wang, Zhizhao Liu and Jianjun Zhang (1996). Research on Precisely Positioning Technique on Short Baseline using GPS, Science and Technology Information of Surveying and Mapping, No.2, pp. 31-36. (Chinese)

Figure 1. One of the papers was ranked 2nd in the top five most downloaded papers in the journal of “GPS Solutions” with 339 downloads within 90 days of its online publication. “GPS Solutions” is regarded as the most authoritative journal in the GPS/GNSS community. To authors’ knowledge, this method so far has been implemented by researchers at Helmholtz Centre Potsdam GeoForschungsZentrum (GFZ) German Research Centre for Geosciences, Germany.

 

Figure 2. One of the papers was ranked 3rd in the top five most downloaded papers in the journal of “Journal of Geodesy” with 308 downloads within 90 days of its online publication, in addition to the downloads directly from author’s personal website. “Journal of Geodesy” is regarded as the most authoritative journal in the Geodesy community. To authors’ knowledge, this method so far has been implemented by researchers at ~10 research groups in UK, China and Canada Universities, including University of New Brunswick (Canada), University of Calgary (Canada), Imperial College London (UK), Wuhan University (China), Peking University (China), Beijing University of Aeronautics and Astronautics (China), Central South University (China), Hohai University (China).