利用GPS信号测定海拔高的多普勒消除技术

Doppler reduction technique for determining the orthometric height using GPS signals

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。

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 reduct...