摘要
系统地分析对流层延迟特性在GPS导航中造成的定位误差,并主要介绍目前卫星定位领域主要应用的一些对流层折射修正模型。基于霍普尔德模型和萨斯塔莫宁模型,提出一种在缺少实测气象参数条件下,使用的简单对流层延迟修正模型。利用Matlab仿真软件对静态和动态接收机实测数据进行分析。结果表明,无气象参数的简单修正模型可以消除70%左右的对流层影响,有效地提高GPS的定位精度。
The characteristics of the troposphere delay at GPS navigation positioning errors is analyzed. The current major application fields of satellite positioning some of tropospheric refraction correction model are introduced. Based on Hopfield model and Saastamoinen model, a meteorological parameters measured in the absence of conditions is used in tropospheric delay correction model. Using Matlab simulation software for static and dynamic receiver measured data were analyzed. The results show that a simple correction model can eliminate about 70% of the troposphere influence to effectively improve the GPS positioning accuracy.
出处
《测绘工程》
CSCD
2009年第6期33-36,共4页
Engineering of Surveying and Mapping
关键词
GPS
定位误差
对流层折射
修正模型
GPS
location error
tropospheric refraction
correction model
