期刊名称：ISPRS Annals of the Photogrammetry, Remote Sensing and Spatial Information Sciences
印刷版ISSN：2194-9042
电子版ISSN：2194-9050
出版年度：2009
卷号：XXXVIII-7/C4
页码：356-359
出版社：Copernicus Publications
摘要：The deformation monitoring network with GPS is often separated, and it appears short-baseline and high-drop between monitoring sites. In theory, the base stations must be set up in the stable place. But because of the limitation of the geological condition and working environment, the reference point shows unstable sometimes. This paper study the influence to the result of the precision of the starting point coordinates and the approach of the adjustment of baseline network with multi-GPS. The baseline network is constituted with simultaneous observation loop (SOL) and non-simultaneous observation loop (NOL). Considering the difference between datum network and monitoring network, the model of adjustment is different between them. Analyzed the data of SOL and NOL, and the data mixed of several SOLs, an approach suited to the case is supplied. Taking into consideration of the deformation monitoring network's independence, it is suited to adopt quasi-stable adjustment over datum network. The quasi-center is treated as the initial data through this kind of adjustment. The system errors and the influence to monitoring sites of reference stations' movement are eliminated. Under the constraint of such method, all data of monitoring sites are integrated to the quasi-center which is a virtual point. All jobs of adjustment are made in WGS. Aimed to get the final deformation information of the monitoring area, all monitoring sites' coordinates are transformed to the system of polar coordinates of station center of the quasi-center. It is studied how the influence of the initial data's precision worked all over the monitoring periods. Based on the theory above mentioned, the software is come true with the function of adjustment of baseline network and monitoring network and deformation monitoring. It is proved that the software is suited to the real situation of the colliery, after tested the program with the data of a colliery and compared with the commercial software package
