基于卫星导航系统的对流层模型分析

对流层误差是卫星导航系统中十分重要的误差源之一,也是卫星导航系统仿真和应用的重要研究课题。介绍了对流层对卫星导航定位的影响,阐述了对对流层模型分析验证的重要意义,分析了UNB3模型、Hopfield模型和双指数模型的原理,并与实测双指数模型进行了比较分析,验证了UNB3模型和Hopfield模型在中国区域使用的有效性,为卫星导航系统仿真及信号模拟提供了有力的依据。

Analysis on Tropospheric Models in Satellite Navigation

In satellite navigation system, the tropospheric error is an important error source, and the research and validation for the troposphere is very useful for application of the satellite navigation. The influence of the troposphere on satellite navigation positioning is introduced, and the important significance of tropospheric model analysis and validation is described. The principles of UNB3 model, Hopfield model and double exponential model are analyzed. By comparing with double exponential model with measured data, the efficiency of UNB3 model and Hopfield model in China is validated, which will provide a strong basis for satellite navigation system simulation and signal simulation.