天文大地网

针对我国天文大地网精度的现状，提出一种建立GPS网与天文大地网坐标系转换的网格转换方法。

This paper gives a method of coordinate transformation of GPS network and terrestrial network according to the present situation of our terrestrial network .

它主要包括建立2000国家GPS大地控制网，2000国家重力基本网，以及前者与国家天文大地网的联合平差等，以实现国家3维地心坐标系统的坐标框架。

It consists of three parts which are establishment of 2000 National GPS Geodetic Network , its combination adjustment with national astro-geodetic network and 2000 National Gravity Fundamental network .

全国天文大地网与全国GPS大地网联合平差（I期）于1998年初完成。本文报告平差采用的原则和模型，并提出平差结果。

A combined adjustment ( phase I ) of the nationwide astro geodetic and GPS geodetic networks was accomplished early in 1998 . The paper reports the principles adopted and the models used in the adjustment and presents results .

用两种不同方法计算分析了我国天文大地网的最弱点点位中误差，精度为±2.0m。

Using two different calculate and analysis methods , we get that the mean variance of the weakest point of the network is ± 2.0m .

区域性地壳形变的影响；天文大地网与GPS2000网联合平差的地壳形变改正研究

Consideration of Regional Crustal Deformation ; Crustal Deformation Corrections for the Combined Adjustment of Astro-geodetic Net with GPS 2000 Net in China

关于我国天文大地网精度的若干分析

On the Accuracy Analyses for the Astronomic-Geodetic Network in our Country

全国天文大地网与空间大地网联合平差

Combined Adjustment of Nationwide Astro - geodetic and Space - geodetic Networks

我国天文大地网与1980年大地坐标系的建立及应用

Chinese Astro-geodetic Net and the Construction and Application of National Geodetic Coordinate System 1980

第一，我国天文大地网的结构和参加整体平差的规模。

The configuration of Chinese astro-geodetic net and the scale entering for adjustment as a whole .

我国天文大地网与卫星多普勒网联合平差的初步方案

A primary program for the Combined Adjustment of Astro geodetic and Doppler satellite Nets in China

天文大地网与空间网联合平差中用共轭梯度法解算高阶法方程的某些策略

Some Strategy on Solving High Order Normal Equation for Combined Adjustment of Astro geodetic and Space Networks by Using Conjugate Gradient Method

第三，用于我国天文大地网整体平差中的条件联系平差法的基本原理和它的几个特殊问题的处理方法；

The basic principle of adjustment by the method of conditional connection used for Chinese astro-geodetic net adjustment as a whole and some problems involved in the method of treatment ;

天文大地网与空间大地网联合平差，对于检核、控制与加强天文大地网以及建立与扩展地心坐标系，都具有重要意义。

The combined adjustment of astro geodetic and space geodetic networks is of great significance for checking , controlling and strengthening the astro geodetic network , and for establishing and extending the geocentric coordinate system .

本文研究了用共轭梯度法解算天文大地网与空间网联合平差中20万阶法方程的有关问题，提出了系数调整策略和平差与求逆既分又合的策略。

This paper deals with the solution for 200 000 order normal equations in combined adjustment of astro geodetic and space networks by using conjugate gradient method , puts forward a scheme of adjusting the coefficients and a strategy of separation as well as mergence between the adjustment and inversion .