Terrestrial LiDAR


The Earth Observatory of Singapore acquired a LIDAR (Light Detection and Ranging) in 2010. It is a RIEGL VZ-400, with a range up to 600m at Laser class 1, a repeatability of 3mm, and a measurement rate up to 125 000 measurements per second.

The LIDAR measures the distance to a target by emitting light pulses. This instrument can scan the topography with exquisite precision. LIDAR datasets are used in tectonics to map faults and earthquake rupture offsets: the accuracy of this instrument allows researchers to constrain precisely the slip-distribution of various faults in Asia; with complementary dating, scientists can also estimate earthquake cycles on a given fault. Sedimentologists also use the LIDAR to map precisely various outcrops.

This technique provides real topography through ultra-high resolution, vegetation free images of an area as large as several square kilometers. The CGO at EOS is fully capable of acquiring and processing Ground-LiDAR data.

Since 2009, EOS has widely use crystal-clear topographic images from the ground-based laser scanning technique (Ground-LiDAR) in earthquake and tectonic-related studies especially in the central China and in Nepal.