卫星导航系统入站干扰信号的综合分析

Analysis of Inbound Jamming Signal for Satellite Navigation System

本文首先介绍了在使用GEO卫星组网的某卫星导航系统中卫星入站干扰信号的特征,然后结合2012年3月2日～3月9日一周的入站干扰电平数据,采用抗差谱分析方法进行了详细分析。结果表明:入站干扰信号电平含有明显的周期变化,主周期是2.67天、1.52天、1.07天、0.82天和0.50天的周期变化,其中2.67天和1.52天周期变化的贡献相对较大。

The characteristics of inbound jamming signal for the satellite navigation system, which is organized by GEO satellites, is introduced. The inbound jamming level data from March 2 to March 9, 2012 is analyzed in detail by using robust spectral analysis method. The results show that： inbound jamming signal level varies greatly with period, and main period is 2.67 days, 1.52 days, 1.07 days, 0.82 days and 0.50 days. Larger contribution is made in the period of 2.67 days and 1.52 days.