摘要
导航信号质量的好坏直接决定了导航系统能够提供的导航服务精度。针对现有的导航信号质量监测只能进行事后处理,实时性差、发现问题不及时和监测时间短等问题,基于高速数字信号处理平台,建立了实时的导航信号质量监测系统,实现了导航信号频域、时域、调制域、相关域和测量域的监测分析,并针对北斗导航系统的公开服务开展了相应的信号质量监测。测试结果表明,本系统完成60 s信号的信号质量监测,所需时间为60.8 s,具有很好的实时性。
The quality of navigation signal directly affects the performance of the navigation service provided by navigation system. Existing systems of signal quality monitoring can only perform processing ex post,having some problems in real-time processing and monitoring period. Based on high speed digital signal processing platform,we constitute a real-time signal quality motoring system to monitor the quality of navigation signal in spectrum,time,modulation,correlation and measurement domain. And we get some monitoring results for Bei Dou open service signals. According to the test results,this system uses only 60. 8 seconds to process signal for 60 seconds with high quality in real-time processing.
出处
《无线电工程》
2016年第8期43-46,60,共5页
Radio Engineering
基金
地理信息工程国家重点实验室开放基金资助项目(SKLGIE2014-M-2-4)
关键词
实时
北斗
信号质量监测
高速数字信号处理
real-time
Bei Dou
signal quality monitoring
high speed digital signal processing
