不同太阳、月亮坐标算法对GNSS部分系统误差的影响研究  

Research on Different Coordinates of Sun and Moon Influence on GNSS System Errors Correction

作　　者：蒋振伟[1,2] 袁运斌 欧吉坤 杨力[3] 

机构地区：[1]大地测量与地球动力学国家重点实验室,武汉市徐东大街340号430077 [2]中国科学院大学,北京市玉泉路甲19号100049 [3]信息工程大学地理空间信息学院,郑州市科学大道62号450001

出　　处：《大地测量与地球动力学》2015年第2期199-202,共4页Journal of Geodesy and Geodynamics

基　　金：国家自然科学基金(41231064;41074013;41174015);大地测量与地球动力学国家点实验室开放基金(SKLGED2013-4-6-E);国家973计划(2012CB825604);国家863计划(2012AA121803)

摘　　要：研究天文年历、JPL星历计算的太阳、月亮坐标的差异及对GNSS导航定位的影响。结果表明,不同星历计算的太阳坐标差异最大为5×108m,月亮坐标差异最大为3×106m。天文年历与DE421计算的星固系X方向之间的夹角最大达30′(Y方向与X方向类似)。太阳坐标差异引起的相位绕转改正之间的差异最大达0.3mm,卫星天线相位中心偏差改正之间的差异最大达3mm。太阳、月亮坐标差异导致固体潮改正之间的差异最大达3mm。经实测GPS数据验证,不同星历计算的太阳、月亮坐标差异对PPP的影响可以忽略,建议在PPP中采用计算效率高的天文年历。This paper presents research on differences of sun and moon coordinates from astronomical almanac and JPL ephemeris and the effects of these differences on GNSS navigation and position.The maximum differences are 5×10^8 and 3×10^6m of coordinates of sun and moon calculated with different ephemeris.The difference in angle can be up to 30′ in Xdirection of the satellite fixed coordinate system between astronomical almanac and DE421（Y direction is similar to the X direction）.Wind-up correction difference and satellite antenna PCO correction difference can reach 0.3mm and 3mm respectively,caused by sun coordinate difference.Solid tidal correction difference can be up to 3mm caused by coordinate differences of sun and moon.However,the designed PPP experiment has proved that the above-mentioned influences on the PPP positioning can be ignored.The most efficient astronomical almanac is advised in PPP.

关 键 词：天文年历 太阳、月亮坐标 精密单点定位 相位绕转 卫星天线相位中心偏差 固体潮 

分 类 号：P228[天文地球—大地测量学与测量工程]