Based on the principal of virtual radio,an HF virtual receiver is designed,which uses an HF broadband receiver and a general server to realize the receiving and DSP(digital signal processing)of HF signals.Through digital channelization,the narrowband extraction and filtering of HF digital signals are realized;then the recognition and demodulation of narrowband signals are accomplished.An example of the HF virtual receiver is provided and compared with the traditional receiver.The results prove that the HF virtual receiver has obvious advantages over traditional HF narrowband receivers.%根据虚拟无线电技术原理设计了一种短波虚拟接收机,采用了短波宽带接收机和通用服务器实现了对短波信号的接收采集和数字化处理,通过数字信道化实现短波数字信号的窄带抽取和滤波,进而完成窄带信号的识别和解调.给出了短波虚拟接收机应用实例,并与传统接收机进行了对比测试,结果表明短波虚拟接收机与传统短波窄带接收机相比具有明显优势.
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