This article introduces a method of establishing GPS surveying and control net by utilizing International GPS Service (IGS).
本文介绍利用国际GPS服务（IGS）快速建立测量控制网的方法，具有很高的实用价值。
As an example of inverse plumb surveying point IP13BZA in the Three Gorges dam horizontal displacement monitoring net, this paper demonstrates how to calculate it with this method.
以三峡工程水平位移监测全网(基点检验网)倒垂测点IP13BZA为例，给出了相应的计算示例。
This paper introduces the repetition measurement of geodetic monitoring net of Huang Lashi land slide by GPS. The accuracy comparison of results obtained by GPS and normal surveying method is given.
介绍运用GPS复测黄腊石滑坡大地形变网，并将其测量成果与常规方法作精度比较。
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