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电离层多普勒接收机的设计与实验

DOI: 10.11728/cjss2015.05.574, PP. 574-580

Keywords: 电离层,软件无线电,多普勒接收机

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Abstract:

利用软件无线电技术设计了一种电离层多普勒接收机.该接收机采用DSP,FPGA等数字芯片与PXI总线进行架构,使用GPS作为接收机的时间和频率同步模块,能够灵活设置系统参数.实验接收来自中国蒲城陕西天文台的高频时间信号,实时获取由于电离层扰动所产生的多普勒频率偏移信息.使用通过MATLAB语言实现的信号处理软件平台,对接收到的高频信号进行处理.观测结果表明,接收机能够分析电离层回波信号的多普勒频移随时间的变化,是获取不同空间尺度电离层扰动信息的一种有效手段.

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