不同IGS产品精密单点定位性能分析  

Research on comprehensive precise point positioning performance of different precise products

作　　者：王尚祺 黄张裕[1] 孙瑞 郭睿 WANG Shangqi;HUANG Zhangyu;SUN Rui;GUO Rui(School of Earth Sciences and Engineering,Hohai University,Nanjing 211100,China)

机构地区：[1]河海大学地球科学与工程学院,南京211100

出　　处：《测绘工程》2022年第6期60-67,共8页Engineering of Surveying and Mapping

基　　金：国家自然科学基金资助项目(41974001)。

摘　　要：精密单点定位(PPP)依靠IGS分析中心发布的精密星历和钟差产品进行高精度绝对定位,由于IGS最终精密星历的发布有2~3周的延迟,无法满足高时效的生产需求,而不同的分析中心则会在1~2 d之内发布快速精密星历,因此对不同分析中心发布的快速精密轨道和钟差产品精度进行研究,并通过静态和动态精密单点定位实验验证分析,旨在实际应用中根据需求选择对应分析中心的精密产品。结果表明,不同分析中心的精密轨道和钟差产品精度存在差异,其中IGR最优,GFZ与EMR稍差;精密单点定位实验中,EMR、ESA、GFZ产品收敛速度快、定位精度高,ESA整体定位性能最优。Precise point positioning(PPP) relies on the precise ephemeris and clock products released by IGS Analysis Center for high-precision absolute positioning.Due to the delay of 2-3 weeks in the release of IGS final precise ephemeris, it can not meet the production demand of high timeliness, while different analysis centers will release fast precise ephemeris within 1-2 days.Therefore, the precision of fast precise orbit and clock products released by different analysis centers will be studied Through static and dynamic precise point positioning experiments, the purpose is to select the precise products of the corresponding analysis center according to the needs in practical application..The results show that there are differences in the precision of precise track and clock products in different analysis centers, among which IGR is the best and GFZ and EMR are slightly worse;In the precise point positioning experiment, EMR,ESA and GFZ products have fast convergence speed and high positioning accuracy, and the overall positioning performance of ESA is the best.

关 键 词：精密单点定位 IGS分析中心 精密轨道和钟差 性能分析 

分 类 号：P228[天文地球—大地测量学与测量工程]