基于软件无线电的高频多普勒接收机设计  

Design of HF Doppler Receiver Based on Software Defined Radio Technology

作　　者：王保民[1] 宁百齐[1] 

机构地区：[1]中国科学院地质与地球物理研究所

出　　处：《数据采集与处理》2006年第B12期109-113,共5页Journal of Data Acquisition and Processing

基　　金：国家自然科学基金(40574072)资助项目。

摘　　要：利用软件无线电技术设计了一种新型高频多普勒接收机。该接收机采用高稳定度频率源、滤波放大器、数字下变频器等,系统具有参数设置灵活,同时进行多通道信号多普勒频移分析的能力,较好地克服了传统高频多普勒接收机存在的问题。实验和观测表明,新型软件式高频多普勒接收机可实时分析多个通道电离层信号回波的多普勒频移大小、强度以及随时间的变化,是观测电离层扰动的一种有效手段。A novel high frequency （HF） Doppler receiver is designed based on the software defined radio technology. Using the high stable frequency, the filter, the amplifier and the digital down convertor, the receiver can conveniently change system parameters, obtain the Doppler shift from multi-channel simultaneously and solve the problems of the traditional HF Doppler receiver. The experiment and the observation show the HF Doppler receiver can analyze the Doppler shift amplitude, the intensity and the time variation of the multi-channel ionospheric echo in real time. So it is an effective method for observing the ionospheric disturbances.

关 键 词：软件无线电 高频多普勒 接收机 数字下变频 

分 类 号：TN99[电子电信—信号与信息处理]