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提出了以有源代无源的“准无源”方法:即用扫描——辐射模式来模拟实际的照射——反射模式。“准无源”方法在射频上的实现,是用由信号源提供射频信号的喇叭口天线模拟无源干扰物,而信号源受控,只有当雷达天线波束扫到喇叭口时,信号源才提供信号。该方法避免了纯无源方法和纯有源方法的诸多缺陷。在此基础上,以目标波形识别为目的,探讨对无源干扰假目标视频回波信号波形的模拟。将已有的视频回波A/D转换数据,在计算机的控制下,通过FIFO输出,再经过D/A转换和驱动放大,即可模拟出视频回波。
An active-passive “quasi-passive” approach is proposed: the actual radiation-reflection mode is modeled using a scanning-radiation mode. The “quasi-passive” method is implemented on radio frequency by using a trumpeter antenna that provides a radio frequency signal by a signal source to simulate a passive interference object, and the signal source is controlled. Only when the radar antenna beam sweeps to the bell mouth, Provide signal This method avoids many shortcomings of the pure passive method and the purely active method. On the basis of this, the purpose of target waveform recognition is to study the simulation of the video echo signal waveform of the passive jamming pseudo-target. The existing video echo A / D conversion data, under the control of the computer, through the FIFO output, and then through the D / A conversion and drive amplification, you can simulate a video echo.