RESEARCH EQUIPMENT

The group was able to purchase large equipment through winning funding from the university’s Large Equipment Grant and external collaborations.

These include:

(i)      a laser scanner for photogrammetric reconstruction of structures

(ii)     a multispectral radiometer for ground truthing and atmospheric correction of remotely sensed images

Figure 40.  Laser scanner demonstrated by postgraduate students at open day

(iii)    Multispectral Radiometer MSR-16R: 

The multispectral radiometer (Figure 41) measures the spectral reflectance of earth surface materials in 16 different wavebands in the visible, near-and middle-infra-red parts of the electro-magnetic spectrum, similar to the wavebands of common earth resource satellites such as Landsat, SPOT, IKONOS, ASTER and MODIS. It is used for calibration of the ground-reflected energy with that received on aerial and satellite images. Examples of its use in recent research projects include calibration of reflectance of false colour air photo wavebands to absolute reflectance for remote sensing of road surface materials, and a study of vegetation in Hong Kong’s country parks.  It can also be used for atmospheric correction of satellite images by comparison of ground reflectances with those on satellite wavebands.

Figure 41.  Multispectral radiometer