天文大地网与GPS2000网联合平差数据处理方法

基金项目: 国家测绘局重大基础测绘基金资助项目(1469990324214)

详细信息

Data Processing Method for Combined Adjustment of National Astro-geodetic Network and GPS2000 Network

¹ Chinese Academy of Surveying and Mapping,16 Beitaiping Road,Beijing 100039,China;² School of Geodesy and Geomatics,Wuhan University,129 Luoyu Road,Wuhan 430079,China

Funds: 国家测绘局重大基础测绘基金资助项目(1469990324214)

摘要: 介绍了天文大地网与GPS2000网联合平差数据处理中的主要数学模型、大规模稀疏矩阵的有效解算方法,用Helmert方差分量估计算法进行地面网的方差分量估计,并用该方法对我国天文大地网的观测数据及空间网数据进行联合平差,得出全网平均点位的点位中误差为0.11 m,点位精度95.5%优于0.3 m。
- 天文大地网 /
- GPS2000网 /
- 联合平差 /
- 方差分量
Abstract: Main mathematic models used in lage scale data processing of combined adjustment of national astro-geodetic network and GPS2000 network are discussed,an effective arithme-tic for large scale sparse matrix resolution also introduced here.Helmert covariance compo-nent estimation is used in estimating covariance component of territory network.Through combined adjustment of these two networks,the avarage mean square error of 48 919 points location is 0.11 m and 95.5% of which is better than 0.3 m.
- astro-geodetic network /
- GPS2000 network /
- combined adjustment /
- covariance component