GPS高程拟合在工程测量中的应用研究

The Application Research of GPS Elevation Interpolation in Engineering Survey

随着GPS技术的不断发展,GPS技术被广泛应用于测绘学科,然而GPS所采用的高程系统与我国规定的高程系统不同,GPS大地高在测量工作中的应用受到很大限制。如何把GPS大地高转换成正常高是测绘科研人员一直研究的问题,GPS高程拟合是一种比较简单、实用的转换方法。本文对于GPS拟合的原理、几种拟合方法进行了介绍,并对不同的GPS高程拟合方法在工程测量中的应用进行了实例分析。GPS高程拟合可以满足普通工程测量对高程精度的要求,通过GPS高程拟合可以把GPS大地高转换成正常高,大量减少了水准测量的工作量,提高了工作效率,较少了工作成本。

With the continuous development of GPS technology, it has been widely applied to the subject of surveying and mapping, but the application of GPS geodetic height has been greatly restricted, because of the differences of coordinate system in survey work. It is an important research topic for researchers to converted geodetic height into normal height. GPS elevation interpolation is a relative simple and practical conversion method. The paper introduces the principle and various methods of the GPS elevation interpolation, and makes a case analysis using the different GPS elevation interpolation methods in the engineering measurement application. GPS Elevation interpolation can fit the accuracy requirements which the general engineering survey needs, through GPS elevation interpolation, GPS geodetic height can be converted into normal height ,which reduce the workload of leveling measurement and improve work efficiency meanwhile reduce the operation costs.