| 利用GPS信号测定海拔高的多普勒消除技术 |
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| 引用本文： | 申文斌,冯瑮,王泽民,晁定波.利用GPS信号测定海拔高的多普勒消除技术[J].测绘科学,2008(Z1). |
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| 作者姓名： | 申文斌 冯瑮 王泽民 晁定波 |
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| 作者单位： | 武汉大学测绘学院，武汉大学地球空间环境与大地测量教育部重点实验室 |
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| 摘 要： | 基于重力频移方程,可通过两个接收机接收GPS卫星信号确定频移观测量,由此可确定任意两点之间的重力位差,进而确定它们之间的高程差。在频移测量中,经典多普勒效应是最主要的干扰源。本文阐述了影响频移测量的各种误差源,特别研究了用于消除多普勒效应影响的一种方法,称为多普勒消除法,利用这种方法可以使频移测量的精度大幅度提高。
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| 关 键 词： | 多普勒消除法 重力频移法 高程测量 |
Doppler reduction technique for determining the orthometric height using GPS signals |
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| SHEN Wen-bin.Doppler reduction technique for determining the orthometric height using GPS signals[J].Science of Surveying and Mapping,2008(Z1). |
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| Authors: | SHEN Wen-bin |
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| Institution: | SHEN Wen-bin~ |
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| Abstract: | Based on the gravity frequency equation,the frequency shift between two arbitrary points on ground could be deter- mined using two receivers by receiving the GPS signals.Then,the geopotential difference as well as the related othometric heist differ- ence between these two points could be determined.In the frequency shift measurement,the classic Doppler effect is the most signifi- cant error source.In this paper,various error sources are discussed,and especially,an approach,referred to as the Doppler reduction approach,for reducing the influence of the Doppler effect is investigated.Using this approach,the accuracy of measuring the gravity frequency shift could be largely improved. |
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| Keywords: | Doppler reduction technique geopotential frequency method orthometric height measurement |
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