四维整体大地测量和应变分析

本文研究了四维整体大地测量实用化和空间应变的一系列问题．利用整体大地测量和动态平差的理论，建立了实用模型和基础观测方程；进而导出了重力向量、天顶距、方位角、距离、正常高差和重力位差的观测方程，并解决了实用化的局部重力场协方差函数的求定问题：推导了三维应变的公式，并计算了应变参数；改进了德国学者Ｌａｎｄａｎ，Ｈｅｍ等人的ＯＰＥＲＡ软件，用Ｆｏｒｔｒａｎ语言编写了ＭＡＳＳＣＯＭＰ小型机上的程序，对一个一等三角锁环和部分二等三角点（共１２４个点）的三角网和重力、水准、天文测量的两期观测结果进行了整体平差，做了应变分析．取得了有参考价值的初步结果．

地壳形变分析模型

本文讨论了地壳三维应变速率的表示与计算;建立了三维应变速率与位移的关系;简述了各应变参数对点位位移的影响;给出了网点三维应变速率的计算模型和精度估计表达式;最后给出了实际算例。

The 4-D integrated geodesy and strain analysis

Research of the practical 4-D integrated geodesy(IG) and strain analysis is presented in this paper.The practical model and basic observation equation are established by using IG and dynamic adjustment.Furthermore,the observation equations about gravity vector,zenith distance,azimuth angle,difference are derived and determination of local gravity field covariance solved.The 3-D strain formular is derived and the strain parameters calculated from it.The improvement of the OPERA software of Landan and Hem etc,FRG has been done to get a new software in Fortran Language which implements in MASSCOMP computer.Using the software,the integrated adjustment of two term observation data of triangle chain, triangle net,gravity,level,astronomic observation and strain analysis are established.The result is satisfactory.

四维整体大地测量实用模型及观测方程

顾及时空几何及物理效应的四维整体大地测量,给大地测量提出了许多新的研究课题,同时也为大地测量开辟了新的应用前景。本文从实用观点出发,建立了四维整体大地测量实用模型,并给出了地面观测值的观测方程。在所有观测方程中,都以点位速率和重力位速率为未知数,以便减少观测值的历元归算;而且随着观测历元的增加,速率参数的精度将不断提高。