海洋二号A与资源三号卫星星载GPS自主轨道确定  

Autonomous Orbit Determination of HY2A and ZY3 Missions Using Space-borne GPS Measurements

作　　者：龚学文[1,2] 王甫红[1] 

机构地区：[1]武汉大学测绘学院,湖北武汉430079 [2]武汉大学地球空间信息技术协同创新中心,湖北武汉430079

出　　处：《武汉大学学报（信息科学版）》2017年第3期309-313,共5页Geomatics and Information Science of Wuhan University

基　　金：国家自然科学基金(41374035)~~

摘　　要：系统研究了基于海洋二号A(HY2A)与资源三号(ZY3)卫星国产星载GPS接收机双频数据的自主定轨问题,模拟在轨实时处理的结果表明,HY2A与ZY3卫星伪距自主定轨的位置精度可达1.3m,速度精度可达1.2mm/s;而HY2A卫星相位自主定轨位置精度可达38cm,其中径向精度约10cm,速度精度可达0.36mm/s;ZY3卫星相位定轨位置精度可达54cm,速度精度可达0.54mm/s。自主定轨的相关成果可以应用于我国后续对地观测计划的实时服务。This paper studied the determination of autonomous orbits of HY2A and ZY3 missions u- sing on-board GPS data. A simulative on-board processing of real-time orbit determination was carried out using the space-borne GPS dual frequency pseudo-range and phase measurements with the auto-de- veloped software SATODS. The test demonstrates that, based on pseudo-rang data, the position and velocity error （3D RMS） of orbit results are up to 1.3 m and 1.2 mm/s respectively, but with phase data, they are reduced to 38cm and 0.36 mm/s for HY2A mission, where the radial accuracy is about 10 cm, and decreased to 54 cm and 0.54 mm/s for ZY3 mission. These contributions can be used for certain real-time service of continued low-earth orbiters （LEO） for earth observations.

关 键 词：星载GPS 自主定轨 在轨实时处理 

分 类 号：P228[天文地球—大地测量学与测量工程]