摘要
CQG2000精度虽不能满足大比例尺测图需要,但分辨率较高,且体现了我国似大地水准面变化趋势的物理性质,可将它作为一个平台,结合高精度GPS水准数据,借鉴移去恢复法原理求解未知点高程异常。本文给出了具体计算步骤并将拟合模型分为函数模型和随机模型进行说明,最后通过具体算例对此方法的可行性和优越性做了分析和探讨。
Although the CQG 2000 doesn＇t have enough precision to plot large-scale map, it has higher definition and could incarnate physical variety of the geodic in China, it can be used as a platform. Moreover, some GPS leveling data could be used to get higher precision and the remove-compute-restore method be adopted to gain the elevation abnormality of unknown points. This paper gives the detailed calculation process, and divides the fitting model into functional model and statistical one to do explanation. Finally, both the feasibility and the advantage of this new method are discussed through examples.
出处
《工程勘察》
CSCD
北大核心
2008年第7期49-51,共3页
Geotechnical Investigation & Surveying
基金
地球空间环境与大地测量教育部重点实验室(1469990324233-04-02).
关键词
高程异常
移去恢复
函数模型
统计模型
elevation abnormality
remove-restore
functional model
statistical model
