天文学进展2018，Vol.36Issue(2)：189-204,16.DOI:10.3969/j.issn.1000-8349.2018.02.06
多种空间大地测量技术内综合方法研究及精度分析
Method Research and Accuracy Analysis on the Intra-Technique Combination from Various Space Geodetic Techniques
摘要
Abstract
In this paper,we described in detail the intra-technique combination methods of international space geodesy technology services such as ILRS,IVS,IGS and IDS for SLR,VLBI,GPS and DORIS respectively.The combination is based on the SINEX weekly solu-tions or 24 h session solution(for VLBI)about the station positions and the earth orientation parameters(EOPs)from various analysis centers.The method mainly focused on the estab-lishment of the intra-technique combination model,constraint problems of reference frame datum definition,the re-weighting of different analysis center solutions and so on.Then,the accuracy of the station coordinates and EOPs of the intra-technique combination solutions from ILRS,IVS,IGS and IDS were evaluated and the long-term characteristic of the reference frame datum definition was analyzed.From the perspective of datum definition,the transla-tion of SLR intra-technique combined SINEX series w.r.t the ITRF2014 has no significant bias and drift with the longest time-span; the series of the GPS intra-technique combined weekly solutions have the smallest scatters in the translation w.r.t.the ITRF2014 but have drifts in X and Y translation and jumps in Z translation; it is similar for the DORIS intra-technique combined solutions as that of GPS.From the perspective of the station coordinates'accuracy,the distinguishment of the core and non-core stations is of great importance.Moreover,due to the good global distribution of GPS stations,the EOP from GPS is more accurate than that from other techniques.关键词
空间大地测量技术/地球参考架/地球定向参数/技术内综合Key words
space geodetic techniques/terrestrial reference frame/earth orientation param-eters/intra-technique combination分类
天文与地球科学引用本文复制引用
何冰,王小亚,王家松..多种空间大地测量技术内综合方法研究及精度分析[J].天文学进展,2018,36(2):189-204,16.基金项目
科技部基础性工作专项 (2015FY310200) （2015FY310200）
国家重点研发计划 (2016YFB0501405) （2016YFB0501405）
国家自然科学基金(11173048,10873029) （11173048,10873029）
宇航动力学国家重点实验室和上海市空间导航与定位技术重点实验室(06DZ22101) （06DZ22101）
浙江省自然科学基金(LQ15D010001) （LQ15D010001）
