Research on Application of Satellite Image Technology in High-precision Ranging System in Urban Environment

Abstract

High-precision on-orbit geometric calibration is the basis for the effective application of spaceborne laser altimeters. Controlling the laser ranging telescope to accurately point to the target The article proposes a geometric calibration method for a spaceborne laser altimeter based on ground infrared detectors. Experiments show that under good experimental conditions, the measurement accuracy is at the decimeter level, and the number of GPS satellites is 6 or more, to ensure that the measurement accuracy is at a high level, and the plane error and elevation error are effectively controlled at 0.3m.