摘要
GPS精密单点定位是最近几年发展起来的一项GPS定位新技术,是目前GPS界研究的热点之一。本文简要介绍了GPS精密单点定位的原理,通过对实验数据的处理,计算出利用IGS分析中心提供的五种精密星历和卫星钟差进行单点定位所能达到的精度,又较为详细的分析了影响收敛速度的因素,得出COD的定位精度是最高的,其收敛速度也是最快的,另外减小对流层延迟和GDOP大小对提高收敛速度也是有效的方法。
The GPS precise point positioning was item of GPS which recently several years developed locates the new technolo- gy,is the hotspots of GPS study.This article briefly introduced the GPS precise point positioning principle,through to empiri- cal datum processing,calculates five kind of precise stars experiences and the satellite clock difference which provides using the IGS analysis center carries on the precision which the simple point positioning can achieve,The detailed analyze influence con- vergence rate factor,has obtained COD the pointing accuracy is highest,it's convergence rate also is quickest,moreover re- duces the troposphere detention and the GDOP size to enhances the convergence rate also is the effeetive method.
出处
《现代测绘》
2007年第1期19-21,共3页
Modern Surveying and Mapping
关键词
GPS
精密单点定位
精度分析
收敛速度
GPS
Precise Point Positioning
Precision Analyze
Convergence Rate
