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山区地形条件下多种GPS高程拟合模型的适应性研究

Research on Adaptability of a Variety of GPS Elevation Fitting Models under Mountainous Terrain
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摘要 随着GPS技术的不断发展,利用GPS所测得的成果无论是水平精度还是垂直精度都达到了很高要求,但对于GPS所测的大地高如何转化为工程中所需的正常高是目前测量学科中的一个热点问题,特别是在山区地形条件下如何提高其拟合精度对实际工程应用具有重要意义。通过采用移去恢复法原理对几个常见的函数模型进行组合,并结合工程实例,对山区地形情况下各模型的精度进行了实验对比分析研究,并提出了适合于山区地形条件下的高程异常拟合模型的选取方案。 With the continuous development of GPS technology, the use of GPS results measured by either horizontal or vertical accuracy reached a very high accuracy requirements, but for how the GPS measured into geodetic engineering of the normal high is a hot issue in current measurement subject, especially in the mountainous terrain conditions, how to improve the fitting accuracy is of great significance for practical engineering applications. By removing restoration method combination principle of several common function model, and combined with engineering example, the mountainous terrain conditions the precision of the model experiments conducted comparative analysis research, and put forward the suitable for the mountainous terrain conditions height anomaly fitting model selection scheme.
作者 董书晓 甘淑
出处 《价值工程》 2014年第10期304-306,共3页 Value Engineering
关键词 GPS高程拟合 大地高 正常高 移去恢复法 组合模型 GPS Elevation Fitting Geodetic height normal height remove-recovery method combined model
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