GPS观测量随机模型对单历元模糊度搜索的影响  

EFFECT OF GPS STOCHASTIC MODEL ON SINGLE EPOCH AMBIGUITY RESOLUTION

作　　者：陈宇波[1] 杨文韬[1] 戴吾蛟[1] 

机构地区：[1]中南大学信息物理工程学院测绘与国土信息工程系,长沙410083

出　　处：《大地测量与地球动力学》2010年第2期76-79,85,共5页Journal of Geodesy and Geodynamics

基　　金：国家自然科学基金(40704002);湖南省自然科学基金(08JJ6025);湖南省重大科研专项

摘　　要：合理的GPS观测量随机模型可有效地提高GPS测量精度,但对单历元模糊度搜索影响还未知。通过利用等权模型、高度角模型及信号强度模型对两组实验数据进行单历元处理分析,结果表明:高度角模型及信号强度模型都可有效地提高单历元模糊度搜索的成功率,当观测环境较差时信号强度模型要优于高度角模型。The suitable GPS stochastic model can improve the accuracy of GPS surveying. However, its effect on single epoch ambiguity resolution is unknown. The unit model, satellite elevation model and signal strength model were used in two tests with single epoch data processing method. The results show that both the satellite elevation model and signal strength model can improve the success rate, and the later is better when there are many obstacles around the GPS antenna.

关 键 词：GPS 单历元 模糊度搜索 随机模型 成功率 

分 类 号：P228.1[天文地球—大地测量学与测量工程]