摘要
系统误差包括卫星轨道误差、卫星钟差、接收机钟差及大气折射误差等。是GPS测量的主要误差源。但系统误差通常可以采用适当的方法来减弱或消除,如建立误差改正模型对观测值进行改正,或选择良好的观测条件,采用适当地观测方法,进行线性差分等.本文介绍了基于VRS的GPS测量要解决的一个主要问题即在系统运行中产生的各种误差进行改正,使之减小或者消除。
GPS system error includes satellite orbit error, satellite clock error, receiver clock error and atmospheric refraction error, which is the main source of error in GPS measurement, However, the system error can usually be weaken or eliminated by the appropriate way, such as establishing model of error correction, choosing good observing conditions, the appropriate observation method, and linear differential, In this paper, a major problem in GPS measurement based on VRS is introduced, which is the various error is corrected in order to reduce or eliminate error, The various errors impacting VRS are analyzed.
出处
《现代测绘》
2008年第3期18-20,共3页
Modern Surveying and Mapping
