Study Of The Theory And Algorithm On Datum Of Crustal Movement And Data Processing

With the rapid development of space geodetic techniques at recent 30 years, the new space geodetic data and new analytical techniques open a new way to monitor and study the crustal motion and dynamic variety of global tectonic plate. In this paper we study the difinition, characters and establishment of the background field of the crustal deformation, the global plate motion models and Chinese plate motion models based on the direct measurements and indirect ones from space geodesy. Regarding the problems of the rank deficiency in the adjustments of space geodetic observations and the absence of geophysical meanings, we propose the synthetical filter combining the geomatric observations and geophysical informations. The adaptive factors have been determined by united method in adaptively filter for solving the rank deficient problem, the precision of results have been improved.Main conclusions and contents of this thesis are as follows.1. The concept of global and regional background fields of the crustal deformation has been classified. We propose to employ the concepts of the regional geometric background field and the regional geophysical background fields. The ITRF2000VEL has been constructed base on the selected IGS data. We compare and analyze the velocity of the fiducial stations of the Crustal Observation Network Of China(COMNOC) according to different background fields.2. The GPS free net adjustment model with gross errors detected and the systematic errors compensated has been researched based on the infulence analyses of the gross errors and systematic errors in GPS observations. The COMNOC data are proceeded, the varieties and precision of the coordinates of stations with time are analysed. The improved indirect solution for crustal deformation has been prersented and the weight matrix of different type observations has been redifined.3. The collocation model for analyzing crustal deformation has been introduced. Combining the robust estimation, we introduce the deformation values from the geophysical model for centerlizing and put forward the new method of constructing co-variance function acoording to different regions and different directions. The robust co-variance function models of Chinese main plate has been constructed. We get the movement maps of Chinese mainland and solve the problems of absence and uneven distribution of observations initially.4. The plate movement models and strain models based on robust estimation and statistical values test have been established. We study the applications of the robust estimation in crustal movement and strain field and apply the robust estimators to analyze the deformation and strain...