摘要
为了进一步提高共位地球静止轨道(GEO)卫星实时监测的精度,提出1种GEO卫星轨道确定方法:利用L型正交双基线Ku频段连续干涉测量(CEI)测量系统进行干涉测量;利用双行轨道根数(TLE)作为先验轨道信息,确定整周模糊度,采用批处理算法获得GEO卫星的精密轨道。实验结果表明:Ku频段受对流层影响显著,冬季大气较夏季更稳定,信号空间传输路径中的对流层误差基本可以抵消,使得观测数据质量明显好于夏季;夏季的晚间数据质量好于白天;冬季和夏季的内符合精度差别较小,而冬季的外符合精度明显高于夏季;外符合精度变化规律一致,且存在明显的趋势项,表明夏季和冬季观测数据都存在一定的系统误差。
In order to further improve the real-time monitoring accuracy of co-located Geostationary Earth Orbit(GEO)satellites,the paper proposed a GEO orbit determination method:the L-type orthogonal double baseline Ku band of Connected Element Interferometry(CEI)measurement system was used to do interferometry;meanwhile,Two Line Element(TLE)was used as prior orbit information to determine the ambiguity of the whole cycle,and the precise orbit of GEO satellite was obtained by batch processing algorithm.Experimental result showed that:due to the significant effect of the troposphere on Ku band,the atmosphere would be more stable in winter than in summer,and the troposphere error in the signal spatial transmission path could be basically offset,leading to the better observation data of winter compared to summer;while the data quality of evening would be better than that of daytime in summer;there would be little difference of internal coincidence accuracy between winter and summer,while the external coincidence accuracy in winter would be significantly higher than that in summer;moreover,in addtion to an obvious trend term,the variation law of external coincidence accuracy in both seasons could be consistent,indicating that there would be certain systematic error in the observation data of both summer and winter.
作者
刘泽军
杜兰
张栩晨
黄晓霞
LIU Zejun;DU Lan;ZHANG Xuchen;HUANG Xiaoxia(Information Engineering University,Zhengzhou 450001,China;Troops 61085,Hangzhou 311200,China)
出处
《导航定位学报》
CSCD
2021年第1期38-43,共6页
Journal of Navigation and Positioning
基金
国家自然科学基金项目(41804034,41774038)。
关键词
连线干涉测量
KU波段
地球静止轨道卫星
轨道确定
connected-element interferometry
Ku band
geostationary Earth orbit satellite
orbit determination
