Satellite Laser Ranging (SLR)

Satellite Laser Ranging (SLR) is a precise method to measure the distance between Earth and a satellite. It involves sending a short laser pulse from ground stations toward a satellite equipped with a reflector. The laser bounces back to the station, and by timing how long the round trip takes, scientists determine the exact distance. This technique helps monitor satellite orbits, study Earth's shape, and measure changes like tectonic shifts or variations in sea level. SLR provides valuable data for geophysics, climate studies, and navigation systems, offering highly accurate measurements through laser technology.