Several Kinematic Data Processing Methods for Time-Correlated Observations  

作　　者：Bofeng LI Zhetao ZHANG 

机构地区：[1]College of Surveying and GeoInformatics,Tongji University,Shanghai 200092,China [2]School of Earth Sciences and Engineering,Hohai University,Nanjing 211100,China

出　　处：《Journal of Geodesy and Geoinformation Science》2019年第4期1-9,共9页测绘学报（英文版）

基　　金：The National Natural Science Foundation of China(Nos.41574031;41622401);The Scientific and Technological Innovation Plan from Shanghai Science and Technology Committee(Nos.17511109501;17DZ1100802;17DZ1100902);The Fundamental Research Funds for the Central Universities(No.2019B03714)。

摘　　要：Time correlations always exist in modern geodetic data,and ignoring these time correlations will affect the precision and reliability of solutions.In this paper,several methods for processing kinematic time-correlated observations are studied.Firstly,the method for processing the time-correlated observations is expanded and unified.Based on the theory of maximum a posteriori estimation,the third idea is proposed after the decorrelation transformation and differential transformation.Two types of situations with and without common parameters are both investigated by using the decorrelation transformation,differential transformation and maximum a posteriori estimation solutions.Besides,the characteristics and equivalence of above three methods are studied.Secondly,in order to balance the computational efficiency in real applications and meantime effectively capture the time correlations,the corresponding reduced forms based on the autocorrelation function are deduced.Finally,with GPS real data,the correctness and practicability of derived formulae are evaluated.

关 键 词：time correlation kinematic solution decorrelation transformation differential transformation maximum a posteriori estimation 

分 类 号：P22[天文地球—大地测量学与测量工程]