NGS—200型GPS测量系统在建立三维控制网中的应用

Application of NGS-200 GPS in Establishment of Three-Dimensional Control Network

介绍了 NGS— 2 0 0 GPS测量系统的组成及原理 ,阐述了利用该系统在北京八大处公园建立测区首级平面控制网的具体做法 ,对布网方案、数据处理、平差计算和测量结果可靠性进行了分析 .实践表明 NGS— 2 0 0 GPS在八大处公园山地地形复杂 ,树木覆盖较密的情况下 ,其性能仍然比较稳定 ,所取得的测量结果达到了国家有关规范要求 .该系统替代常规测量技术是经济。

This paper deals with the composition and the principle of NGS 200 static GPS and its application to establishing first grade plane control network in Beijing Badachu Park. The reliability of the network disposition, data processing, adjustment methods, and precision estimation is discussed and analyzed. The result shows that the function of NGS 200 GPS is stable even though Beijing Badachu Park has a complicated topography characterized by densely covered trees. The precision of the survey conforms to the national standard. Therefore, it is economical and reliable to apply the system in place of the conventional surveying method.