贵港市GPS城市扩展网的建立

The Expand of Guigang City Plane Network with GPS

本文结合实际，较全面地介绍利用GPS技术进行城市扩展控制网的布设方案、方法要求和精度统计，并就“贵港市GPS网与地面网不衔接的问题，运用平面相似变换的方法，使地面网与GPS网较合理地连成一个整体。

The paper introduced the plan of network, method, requirment and precision statistics of the city expanded network by GPS technique. In the chain problem between GPS network and the terrestrial network of Guigang City, the method of plane quiform transformation is used. The terrestrial network and GPS network are joined as a whole.