美国打击叙利亚期间GPS信号监测评估

Monitoring and assessment of GPS signals during US attacking on Syria

为了分析2018年4月美国打击叙利亚期间出现的P(Y)码功率增强现象及叙利亚地区的信号干扰现象的原因及作用,提出利用RTKLIB软件分析IGS监测数据的方法:从IGS网站下载不同监测站的数据,分析打击前后的干扰及功率增强现象;然后仿真分析接收信号载噪比对P(Y)码、C/A码捕获概率的影响,比较叙利亚地区增强前后GPS信号良好情况下的使用时长。分析结果显示,美国对19颗卫星进行了全球范围的功率增强;仿真结果表明,功率增强后军用用户可有效提高其定位导航能力。

In order to analyze the causes and effects about the power enhancement of P(Y)code and signal interference occurred in Syria in April 2018 when the United States attacked Syria,the paper proposed a method of analyzing IGS monitoring data by RTKLIB software:data of different monitoring stations were downloaded from IGS website,and the signal interference and power enhancement before and after the attack were analyzed;the effect of carrier-to-noise ratio of received signals on the acquisition probability of P(Y)code and C/A code was simulated then,and the good service time of GPS signals before and after the enhancement in Syria was compared finally.Result showed that the power of 19 satellites had been enhanced globally by the United States,and military users could effectively improve their positioning and navigation capabilities after the power enhancement.