LIDAR: Just What Is It?



Steven M. Schorr, PE, Collision Reconstruction Engineer ::::
Did You Know that… LIDAR stands for Light Detection And Ranging.
It is defined as “A remote sensing method that uses light in the form of a pulsed laser to measure ranges (variable distances) to the Earth. These light pulses—combined with other data recorded by the airborne system— generate precise, three-dimensional information about the shape of the Earth and its surface characteristics.”
LIDAR is the foundation of HDS Laser Scanning which provides engineers and others the opportunity to create accurate three-dimensional environments for use in analyses.
A LIDAR instrument principally consists of a laser, a scanner, and a specialized GPS receiver. Topographic LIDAR typically uses a near-infrared laser to map land. Bathymetric LIDAR uses water-penetrating green light to measure seafloor and riverbed elevations. LIDAR data is the foundation of HDS laser scanners utilized in the forensic community. It is also a foundation for data collected in the intelligent highway/vehicle environment.
Steven M. Schorr, PE, Collision Reconstruction Engineer and President of DJS Associates can be reached via phone at 215-659-2010 or via email at

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