联合低轨卫星和地面监测站数据确定导航卫星轨道  

Precise Orbit Determination of Navigation Satellite Using Joint Data from Regional Tracking Station and LEO

作　　者：冯来平[1,2,3] 阮仁桂[2,3] 吴显兵[2,3] 孙碧娇[2,3] 

机构地区：[1]信息工程大学地理空间信息学院,郑州市450001 [2]西安测绘研究所,西安市710054 [3]地理信息工程国家重点实验室,西安市710054

出　　处：《大地测量与地球动力学》2016年第10期864-869,共6页Journal of Geodesy and Geodynamics

基　　金：国家自然科学基金(41204020);大地测量与地球动力学国家重点实验室开放基金(SKLGED2014-3-4-E)~~

摘　　要：探讨同时利用星载数据和地面监测站数据进行导航卫星联合定轨的方法。为验证该方法的有效性,利用2011-03-16-31中国境内7个GPS监测站的观测数据和GRACE-A＆B星载数据进行定轨实验。结果表明,在7个国内监测站基础上,加入一颗低轨卫星（GRACE-B）星载GPS数据,GPS可见弧段增加约14%,卫星径向、切向和法向（R、T、N）定轨精度可分别提高约35%、44%和45%;若同时加入GRACE-A和GRACE-B星载数据,可见弧段增加约18%,R、T、N分量精度分别提高约51%、60%和62%。该方法为区域监测站布设条件下导航卫星定轨精度的提升提供了一种新思路。We discuss the method of orbit determination combining the on-board data of LEO with the observation data of regional monitor stations. In order to validate this proposed approach and its performance, the observation data of 7 GPS stations in China and on-board data of GRACE-A＆B during March 16-31, 2011 are collected and orbit determination experiments were carried out. The results show that, compared with the result of 7 stations, the visibility of GPS satellites is increased by about 14 %. Meanwhile, the precision of GPS orbits expressed in R, T, N components are improved by about 35 %, 44 % and 45 % respectively when introducing only GRACE-B; improvements in R, T,N compo nents of 51%, 60% and 62% are achieved when both GRACE-A and GRACE-B are introduced and the visibility of GPS satellites is increased by 18% in this case. The proposed approach provides a new means to improve the orbit determination accuracy of navigation satellites under the restriction of regional monitoring stations.

关 键 词：低轨卫星 星载数据 精密定轨 SPODS软件 区域站 

分 类 号：P228[天文地球—大地测量学与测量工程]