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):691–703, 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):19–33, 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) |
||
(2) |
||
(3) |
||
(4) |
||
(5) |
Central Policy Unit, The Government of the Hong
Kong Special Administrative Region |
|
(6) |
We are very appreciative of the following agencies
having provided helps and assistances for Dr. Liu’s research group:
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.
[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
[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.
[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).