Time Series Correlated Error's Simulation Scheme with the Application to Simulate the Ephemerides Error of CHAMP
- 出版年：2002
- 作者：SHEN Yun-zhong；HSU Hou-tse
- 单位1：Department of Surveying and Geo-informatics
- 出生年：1962
- 语种：中文
- 作者关键词：time series observation；simulation of correlated errors；CHAMP ephemericles
- 起始页：27
- 总页数：4
- 刊名：测绘学报
- 是否内版：否
- 刊频：季刊
- 创刊时间：1957
- 主管单位：中国科学技术协会
- 主办单位：中国测绘学会
- 主编：陈俊勇
- 地址：北京市复外三里河路50号
- 邮编：100045
- 电子信箱：chxb@periodicals.net.cn；chxb@chinajournal.net.cn
- 网址：http://chxb.periodicals.net.cn/；http://chxb.chinajournal.net.cn/
- 卷：31
- 期：5
- 期刊索取号：P810.66 649-5
- 数据库收录：中国科协优秀期刊；中文核心期刊
- 核心期刊：中文核心期刊
摘要
Computer simulation experiment is very important in the phase of project design，the availability of simu-lated result highly depends on the scheme of error simulation. Time series observations are normally correlated. This paper first discusses the formula of correlated error propagation，then derives the formula of simulating time series correlated errors. This formula is then used to simulate correlated ephemerides errors of CHAMP，then the ephemerides are used to recover the gravity vector at satellite altitude with finite differential formula. The formulae derived in this paper are verified with the difference between the recovered gravity vectors and the‘true values' which are directly computed with the same gravity model as that generating the ephemerides.