航空兵器Issue(1)：18-27,10.DOI:10.19297/j.cnki.41-1228/tj.2017.01.003
高轨环境中GNSS可见性及几何精度因子分析
GNSS Satellite Visibility in High Orbit Environment and DOP Analysis
摘要
Abstract
Based on the simulations of high-orbit applications and all GNSS constellations, the visibility of GNSS in GEO and HEO is analyzed, as well as the influences of inclination and altitude towards the visibility of GPS, GLONASS, BDS and Galileo.In order to deal with the lack of visible satellites, GNSS intermittent failure in short time, an INS-aided scheme is proposed and its availability is verified with analysis of INS short-term error.Furthermore, aimed to reduce dilution of precision (DOP) in high orbit environment, the time differenced carrier phase measurements are preferred.With the comparison of DOP of non-differential and differential GNSS, the advantage of time differenced carrier phase measurements can be confirmed.关键词
高轨环境/GNSS/可见性/几何精度因子Key words
high orbit environment/GNSS/visibility/dilution of precision分类
航空航天引用本文复制引用
孙兆妍,王新龙..高轨环境中GNSS可见性及几何精度因子分析[J].航空兵器,2017,(1):18-27,10.基金项目
航空科学基金项目(20130151004 （）
2015ZC51038) （）
卫星应用研究院创新基金资助项目(2014_CXJJ-DH_01) （2014_CXJJ-DH_01）
