JASON-2卫星精密轨道确定:GPS,SLR和DORIS分析  被引量:10

Precise orbit determination of JASON-2 satellite:analysis of GPS,SLR and DORIS

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作  者:盛传贞[1,2] 甘卫军[1] 赵春梅[2] 张小强[2] 孙保琪[3] 陈为涛[1] 

机构地区:[1]中国地震局地质研究所地震动力学国家重点实验室,北京100029 [2]中国测绘科学研究院,北京100830 [3]中国科学院国家授时中心,临潼710600

出  处:《中国科学:物理学、力学、天文学》2013年第2期219-224,共6页Scientia Sinica Physica,Mechanica & Astronomica

基  金:国家自然科学基金资助项目(批准号:41174082;41074012;41274018)

摘  要:本文针对GPS,SLR和DORIS3种观测手段的定轨问题进行了研究.以JASON-2卫星为例,讨论了GPS,SLR和DORIS的定轨策略、轨道精度评价和轨道叠加问题.并基于2009-01-21-25日实测数据进行了试验.试验结果表明,DORIS定轨结果要优于GPS和SLR;不同的轨道验证方法得到的GPS和SLR轨道的相对精度不同;基于SLR验证和轨道重叠验证的结果定权,综合GPS,SLR和DORIS进行轨道叠加,其叠加轨道的精度是一致的,通过与JPL轨道比较,其径向精度为2cm.This paper studied the problem of precise orbit determination by using GPS, SLR and DORIS, and taken JASON-2 as example to discuss the determination strategy, orbit validating methods and orbit stacking of it. Experiment has been carried out by using the observational data from January 21st, 2009 to January 25th, 2009 and the results show that: the orbit determined by DORIS is the best among that determined by GPS, SLR and DORIS. Different orbit validating method came to a different conclusion on relative accuracy when comparing orbit determined by GPS and DORIS. When we combine the orbit determined by GPS, DORS and SLR respectively by using the weight based on result of SLR validating and orbit overlap, it shows that the combined orbit have similar accuracy. When comparing the combined orbit with JPL orbit, it shows that the radial orbit accuracy can reach to 2 centimeters.

关 键 词:GPS SLR DORIS JASON-2 精密轨道确定 

分 类 号:P228.4[天文地球—大地测量学与测量工程]

 

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