The Research Of Laser Ranging Technique In The Chang'e Project

Laser Ranging technology is a comprehensive technology, covering a number of areas from laser, photoelectric detection, automatic control to space orbit. The rapid development of these disciplines promotes the progress of Laser Ranging technology. Laser Ranging system experience a three-stage development, of which the location accuracy is the main sign of the ranging system creation. At present, the precision of the fourth phase is expected to be millimeter-level, which is still in the development stage.The introduction of this paper introduces the developments of satellite Laser Ranging technology, the components of ranging system, ranging network and the significance of Laser Ranging in the Chang'e project. Based on the Laser Ranging theory, corner reflectors theory, the second and the third parts discuss the theoretical foundation of the corner reflectors and the basic problem should be pay attention to. The forth part analyses the necessity and feasibility of the lunar exploration satellite Laser Ranging, and presents the design proposal of single corner reflectors and angle reflector array. The fifth part introduces the example that the United States and the former Soviet Union place the corner reflector array on the moon surface. So we present the corner reflector array design placed on the moon surface.This paper is only a preliminary study, there are still many works need to do. However the results are significant for impelling the laser ranging theories, promoting the laser ranging techniques.