For the current software defined radio(SDR)system of passive radar has the disadvantages of low integration, large size and complex hardware structure,a high-integration,multiband,minimum and low-cost SDR receiver system of pas-sive radar is designed. The system is composed of the high-integration AD9361 RF chip,FPGA and USB 3.0 transmission module. The third-party opportunity illuminator including FM broadcasting,CMMB and DTMB is used to detect the target. The measured data shows that the system can acquire the multiband signals correctly and transmit the data to the host computer. The reliability and high target detection performance of the system are verified with outfield experiment.%针对现阶段外辐射源雷达多波段软件无线电(SDR)系统集成度低,体积大和硬件结构复杂的不足,设计了一种高集成度、多波段、小型化、低成本的外辐射源雷达SDR接收机系统.系统由高集成度的AD9361射频芯片、现场可编程门阵列(FPGA)和USB 3.0传输模块组成,目的是利用调频(FM)广播、中国移动多媒体广播(CMMB)和数字电视地面多媒体广播(DTMB)第三方机会照射源实现对目标的探测.实测数据结果表明,该系统能够对多波段信号进行正确的采集,并将数据传输到上位机.外场实验验证了该系统的可靠性以及良好的目标探测性能.
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