应用先验数据的高分三号卫星快速定位方法  

Fast Positioning Method by Using Priori Data for GF-3 Satellite

作　　者：刘久利[1] 周波[1] 刘杰[1] 涂兰芬 刘迎娜[2] 

机构地区：[1]北京空间飞行器总体设计部,北京100094 [2]航天恒星科技有限公司,北京100095

出　　处：《航天器工程》2017年第6期24-28,共5页Spacecraft Engineering

基　　金：国家重大科技专项工程

摘　　要：针对高分三号(GF-3)卫星多种姿态下快速定位的需求,提出一种应用先验数据的卫星快速定位方法。该方法以GF-3卫星的定位数据和姿态数据为辅助信息,计算导航卫星的仰角,实时判断导航卫星对GF-3卫星导航接收机的可见性,从而减少捕获时间,实现快速定位。GF-3卫星的在轨验证结果表明:应用先验数据的卫星快速定位方法,定位时间为115s,短于其他低轨卫星的855s,从而验证了方法的正确性。文章提出的方法可应用于其他低轨遥感卫星。For the fast positioning requirement under various attitudes of GF-3 satellite,a fast po-sitioning method by using priori data is proposed.The method regards the GF-3 satellite position and attitude data as assistant information and then judges the visibility of navigation satellites in real time by calculating the elevations,so that the time of acquisition is decreased then the posi-tioning time is reduced.The on-orbit test verifies the effectiveness of the method by using of priori data,and the positioning time is 115s,shorter than that of other LEO satellite which is 855s.The method proposed in the paper is appropriate to various kinds of remote sensing satellite on LEO.

关 键 词：卫星快速定位 可见导航卫星预测 定位时间 定位数据 姿态数据 

分 类 号：V448.2[航空宇航科学与技术—飞行器设计]