测站分布对GPS解算ERP的影响分析  

Analysis of the Influence of the Distribution of Stations to the Earth Rotation Parameters by GPS

作　　者：黄春桃 刘学习[2] 蔡顺中 魏二虎[2] 

机构地区：[1]中山市中鑫测绘工程有限公司,广东中山528451 [2]武汉大学测绘学院,湖北武汉430079

出　　处：《城市勘测》2018年第1期52-54,75,共4页Urban Geotechnical Investigation & Surveying

基　　金：国家自然科学基金项目(41374012)

摘　　要：在利用GPS解算地球自转参数的过程中,测站分布对解算的效率和最终的解算精度会产生比较大的影响。本文设计三种不同的测站分布的方案来研究测站分布对GPS解算地球自转参数的影响。实验结果表明,测站分布对极移xp、yp影响较大,对UT1-UTC的影响较小。测站均匀分布在全球有助于提高计算结果的精度和稳定性。In the process of calculating the earth rotation parameters( ERP) by GPS,the distribution of stations will have a great impact on the calculation efficiency and the precision. This paper designs three different schemes to explore the influence of the distribution of stations on calculating ERP by GPS. The research shows that the distribution of stations has great impact on polar wandering xpand yp,while the distribution of stations has little influence on UT1-UTC.The uniform distribution of the stations is helpful to improve the precision and stability of the calculation results.

关 键 词：地球自转参数 GPS 测站分布 解算精度 

分 类 号：P228.4[天文地球—大地测量学与测量工程]