航天器工程2019，Vol.28Issue(2)：30-35,6.DOI:10.3969/j.issn.1673G8748.2019.02.005
火星车定向天线自主对地指向规划方法
Autonomous Earth Pointing for Mars Rover HighGgain Antenna
摘要
Abstract
For the twoGdimension highGgain antenna of the mars rover,with consideration of the onboard restrictions and demands of transmission to the earth,an autonomous earth pointing alG gorithm is proposed based on analytical ephemeris.In the algorithm analytical formulas of marsG earth relative azimuth,signal transmission delay,and space intersection are presented,which gets rid of the complicated ephemeris model and makes the onboard computer running more effiG ciently.On this basis,the antenna rotation angles are calculated according to the position and posture of the rover,installation matrix of the highGgain antenna.And control strategy of the anG tenna joints is given to make the antenna autonomously track the earth in real time,which would build stable communication link.The calculated results of analytical ephemeris are tested by simG ulation,and the autonomous tracking results of antenna are verified in laboratory.Simulation and test results prove that the method is reasonable and feasible,and pointing accuracy meets the reG quirements.This method solves the earth pointing and tracking problem of antenna in long delay condition,and will be used on the first mars rover of China.关键词
火星车/天线指向/解析星历/自主跟踪Key words
mars rover/antenna pointing/analytical ephemeris/autonomous tracking分类
航空航天引用本文复制引用
彭松,贾阳,隆昌宇,陈百超,朱玛,张建利..火星车定向天线自主对地指向规划方法[J].航天器工程,2019,28(2):30-35,6.基金项目
国家重大科技专项工程. （）
