1、 毕业设计毕业设计(论文论文) 设计题目:GPS 控制网的优化设计研究 I 摘要摘要 GPS 定位在测量中有很大的应用潜力。近年来,GPS 接收机的小型 化、小功耗给其应用于测量提供了有利的条件。在软件方面,GPS 的基 线解算、平差也有了很大的发展,这些都促使 GPS 在测量中得到了较 为广泛的应用。而且随着 GPS 定位技术的发展,卫星数的增多更新,目 前所用 GPS 接收机的实际相对定位精度及其稳定性较高, 许多厂家生产 的 GPS 接收机( 如 leicaNGSS1200,Trimble 4700 等) 可达到 B 级以 上的定位精度。因此,研究用 GPS 布设短基线控制网的精度和缩短
2、观 测时段长度的可行性, 有其重要意义。本论文所要研究的内容就是在 现有 GPS 条件下,通过布设短基线控制网,对不同观测方式及不同外界 条件下 GPS 定位结果进行分析,检核 GPS 所能达到的精度,及对外界条 件因素的依赖程度,总结影响精度的原因及解决方法,为实际的生产和 研究提供参考依据. 关键词:GPS,基线解算,定位精度,相位中心 II Abstract GPS positioning measurements have great potential. In recent years, GPS receivers of small size, small power consump
3、tion to applied to provide favorable conditions for measurement. In terms of software, GPSs baseline, the adjustment has also been greatly developed, which prompted the measurement of GPS has been more widely used. And with GPS positioning technology, satellite increased the number of updates. Curre
4、ntly used in the actual GPS receiver positioning accuracy and stability of the relative high number of manufacturers of GPS receivers (such as leicaNGSS1200, Trimble 4700, etc.) can reach more than B-level positioning accuracy. Therefore, the study laid a short baseline using GPS control network of the accuracy and feasibility of shortening the length of observation period, has its significance. This paper will study the content is available GPS conditions, short baseline control network th