摘要
在GPS/VRS高精度定位中,对流层延迟误差是影响定位精度的主要因素之一。由于该误差与各参考站间距离相关,目前主要是通过内插模型消除对流层延迟误差影响,实现用户高精度定位。通过总结近十年来主要的几种内插模型,并结合美国CORS网络的六个参考站的数据进行实验分析,发现内插模型误差和卫星高度角以及用户与参考站高程差是相关的,其中LIM模型和LCM模型能够获得较优的效果,可应用于消除对流层延迟误差。
In the GPS/VRS high precision positioning,troposphere delay error is one of the main factors which influence positioning accuracy.The error is related with the distance between reference stations,and presently troposphere delay error influence is mainly eliminated through the interpolation model,in order to realize the high precision positioning.Through summarizing the main several interpolation model in the last 10 years,and making experiment and analysis with the data of six reference stations of US CORS network,it is found that the model error is related with the elevation of satellite and the height difference between the user and main reference station,besides,LIM model and LCM model which get the better effect can be applied to eliminating the troposphere delay error.
出处
《测绘与空间地理信息》
2013年第2期127-129,共3页
Geomatics & Spatial Information Technology
