【摘要】 针对远程高频地波雷达由于Norton衰减的影响导致接收机需要过大的动态范围的问题,提出了采用分段压地波形的设计来减小对接收机动态范围要求的方法。通过对远程高频地波雷达采用的调频中断连续波(FMICW)体制的处理过程的分析,指出利用减少近距回波的时间利用率来设计压地波;用计算机仿真探讨了该方法的近海回波压制能力,证明了其有效性。更多还原

【Abstract】 To decrease the reqiurement of high dynamic range of radar receiver resulting from Norton attenuation factor of ocean surface in long-range HF ground wave radar system, a segment blank pulses waveform design method is presented in this paper. By analyzing the frequency modulated interrupted continuous wave (FMICW) type waveform employed in HF ground wave radar, the blank pulses are designed by reducing near echo efficiency for suppressing offing sea-echo. Computer simulations show the feasibility of the presented method.更多还原