| 基于Matlab的GPS高程异常拟合 |
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| 引用本文： | 冯海波;韩冰;梁宏伟;张元杰.基于Matlab的GPS高程异常拟合[J].东北测绘,2013(4):101-102,105. |
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| 作者姓名： | 冯海波;韩冰;梁宏伟;张元杰 |
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| 作者单位： | 黑龙江第二测绘工程院 |
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| 摘 要： | 由于似大地水准面是一个不规则的曲面,它无法用一个精准的曲面来模拟,这就使得GPS只能提供给我们高精度的大地高,而不是工程中需要的正常高,严重影响了GPS3维定位的应用发展,使其提供维坐标的优越性未能得到充分发挥。在借鉴国内外研究成果的基础上,针对我国国土面积广,地形尤为复杂,似大地水准面起伏比较大的特点,结合工程实例,对大面积区域内GPS高程异常拟合作了相应的分析和研究。
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| 关 键 词： | 大地高 正常高 多面函数 最小二乘法 |
GPS Elevation Abnormal Fitting Based on Matlab |
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| Institution: | FENG Hai-bo,HAN Bing,LIANG Hong-wei,ZHANG Yuan-jie(The Second Surveying and Mapping Engineering Institute of Heilongjiang Province,Harbin 150081,China) |
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| Abstract: | GPS has its deficiency in the elevation pointing accuracy aspect because the geoid is an irregular curved surface and it is unable to simulate with an accurate curved surface,which enables GPS only to provide for us the accuracy of the geoid height rather than the normal height in our project needs.So it has seriously affected the three dimensional localization application development of GPS and made the superiority of providing the three dimensional coordinates not able to obtain the full display.By collecting and analyzing the domestic and international study methods and application techniques of GPS leveling in recent years and based on these research results,complex terrain,geoid characteristics,and the case study,the paper studies GPS elevation abnormal fitting in large areas. |
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| Keywords: | geoid height normal height multiple-surface function least squares theory |
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