Be aiming at resolving the problem of high sampling rate,which is required in modern radar reconnaissance receivers.A new signal sampling system is detailed analyzed.The sampling system is made of parallel multi-channel ADC,and the signal spectrum restoration is completed by adaptive beamforming in the system,which can acquire the whole frequency domain information.Then according to the real-time requirements and actual condition of radar reconnaissance receiver,the performance optimization and parameter calculating are accomplished,and algorithm simulation is completed.The result of algorithm simulation and radar signal processing testing shows that this method can effectively improve the bandwidth of receiver,and achieve the preferable result of frequency spectrum analysis.Therefore,it can be widely used in wideband digital reconnaissance receiver.%针对现代雷达侦察接收机对ADC高采样率要求的难题,给出一种新的信号采集系统方案.利用多个低速率ADC并行采样,通过自适应波束形成算法对信号的频谱进行恢复,从而获取完整的信号频域信息.根据雷达侦察接收机的实际工作条件以及对实时性要求,对频谱恢复算法进行了性能优化和参数计算,并对算法进行了仿真.算法仿真结果和雷达信号处理机硬件测试结果表明,能够有效地提高侦察接收机的带宽,并且得到较好的频谱分析结果,能够广泛的应用于宽带数字雷达侦察接收机系统中.
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