摘要
文章介绍了电离层闪烁的基本特点和可以表征电离层闪烁中幅度闪烁强度的S4指数。通过建立带有电离层闪烁信息的GPS接收机接收信号模型,得到了不同强度的幅度闪烁与GPS接收机捕获信号时漏警率的关系。通过仿真分析得到,较大强度的电离层闪烁会严重影响GPS接收机的捕获性能。
The paper introduces the feature of Ionospheric scintillation and the S4 index which can give the strength of the amplitude fading.The paper establishes the model of the GPS receiver receiving signal with the ionosphere scintillation information.It gets the relationship of the missed detection rate of GPS receiver and ionospheric scintillation.Analysis results show that the great ionospheric scintillation intensity will seriously affect GPS receiver capture performance.
出处
《舰船电子工程》
2012年第12期55-56,115,共3页
Ship Electronic Engineering
关键词
电离层闪烁
幅度闪烁
捕获性能
漏警率
ionospheric scintillation
amplitude fading
capture performance
missed detection rate
