摘要
随着空间大地测量技术的发展和高精度全球定位系统（ＧＰＳ）及人卫激光测距（ＳＬＲ）的应用，研究地心变化变得越来越重要．本文从定义、理论和实测三方面探讨了地心的变化及原因．比较地心变化的计算结果和ＳＬＲ的观测结果，可以看出，地心变化具有明显的周年和周日变化，幅度大约在 ２－６ｍｍ之间，在高精度大地测量的数据处理中应加以改正．
Along with the development of space-geodesy and the application of GPS and SLR in the geodesy, studies on geocenter variation has become more and more important. In this paper, we discussed the geocenter variation in three aspects: conception, theory and observation. Comparison of the calculated geocenter variation with the observed results from SLR shows that the geocenter variations has obvious annual and diurnal period with the amplitudes of 2-6mm, which should be corrected in high precision geodesy.
出处
《地球物理学报》
SCIE
EI
CAS
CSCD
北大核心
2000年第2期160-165,共6页
Chinese Journal of Geophysics
基金
中国科学院95院重点项目!KZ952-S1-401
国家自然科学基金项目!4960450
49904002
中国科学院测量与地
