全球导航卫星系统互干扰评估分析及启示

介绍全球导航卫星系统(GNSS)信号互干扰问题的现状,总结卫星导航系统互干扰评估测试的两种方法,即多径误差评估方法和载噪比评估方法的基本理论和研究现状,结合卫星导航系统的发展需求,对比提出了方法之间的局限性。针对我国卫星导航系统的发展情况,提出基于频谱隔离系数的等效载噪比方法作为卫星导航系统信号互干扰评估方法,以及相关的发展建议。

Intersystem and Intrasystem Interference Assessment Theory of Global Navigation Satellite System

This paper introduces the actuality of the signal intersystem and intrasystem interference of the GNSS,and summarizes the essential theory and the study actuality of two methods of evaluating and testing mutual interference of the satellite navigation system,i.e.the multipath error evaluation method and the method to estimate carrier to noise ratio.Combined with the development of the satellite navigation system,the limitations of the two methods are presents through comparison.Aiming at the development of the satellite navigation system,the paper proposes that the equivalent load ratio method based on spectrum coefficient of isolation should be adopted as the evaluation method of the signal mutual interference of the satellite navigation system.The related development suggestion is also proposed.