Space Rendezvous Laser Radar Apt Capture Technology Simulation

With the development of aerospace technology,cosmonautic technology has become the new epoch in exploring the outer space. Shenzhou 5 single- astronautic, one day and Shenzhou 6 multi- astronautic, is the great landmark in our aerospace technology, which indicating the maturity in this field. This experiment, walking outside the cabin and rendezvous docking(RVD),will be carried out there, then set up the instant or permanent guarding space station. The rendezvous docking is one of the key technologies of setting up space station, while the rendezvous laser radar (RVR) is one of the key & difficult points of RVD. According to system requirements, this dissertation researches APT capturing system as below:(1). Analyzing the ingredients of APT system, it includes launch and scan system, object reflector system, position & distance survey system, distance & speed survey system, and APT control system. It make a detailed analysis to the key parts, calculate the LRCS of corner reflector, and analyzes the calculating method and space resolving ratio of the object position caused by QD and CCD.(2).According to the system indices and requirements together with the technology characteristic, it researches the capture possibility of APT capturing system. then it introduces the common scan methods, such as Raster, Spiral, Raster Spiral, Rose and Lissajo.(3).It makes a detailed simulation analysis of the Raster and spiral scan,analyze the connection between capture probability, capture time, system index at different capture resolution angle, capture range, vibration angle extent and terminal location distributing mean square deviation. Then summarizes the respective characteristics, and integrates their advantages to make computer simulation and system simulation to the application of spiral scan in laser radar. It summarizes the characteristics and each scan methods, and analyze the characteristics of the objective escape, then bring forward an applicable hexagon scan method and make simulation. After the calculation, the scan efficiency of the hexagon scan is up to 11.1% than Raster scan.(4).In the following parts it analyzes the every factors that affect the capture scan speed , makes the simulation, and sum up the initial simulation result. There are 65 simulation programs made by Matlab/simulink and C.