GEDI Media Resources: B-Roll

GEDI is a full-waveform lidar instrument that makes detailed measurements of the 3D structure of the Earth’s surface. Lidar is an active remote sensing technology (the laser version of radar) which uses pulses of laser light to measure 3D structure. The light is reflected by the ground, vegetation and any clouds and is then collected by GEDI’s telescope. These photons are sent to detectors, recording time of arrival in 1 ns (15 cm) intervals. Time is converted to distance by multiplying by the speed of light.