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非相干雷达通过观察信号幅度中由目标信号和地面杂波信号的相互作用引起的小起伏,就可检测到运动目标。在机载雷达中,必须把真实运动目标引起的高频起伏和照射区内各个散射体相对运动引起的低频调制分开,尤其是由飞机运动产生的那种低频调制。采用快速付立叶变换运算实现这种滤波,就可使滤波器持性连续适应于观察到的杂波频谱。以这种原理为基础的信号处理机已由机载侧视和前视工作有效地得到验证。
Non-coherent radars detect moving objects by observing the small fluctuations caused by the interaction of the target signal and the clutter signals in the signal amplitude. In airborne radars, the high-frequency fluctuations caused by the real moving targets must be separated from the low-frequency modulation caused by the relative movement of the various scatterers within the irradiation zone, especially the low-frequency modulation produced by aircraft movements. Fast Fourier transform to achieve such a filter operation, you can make the filter to adapt to the persistence of the observed clutter spectrum. Signal processors based on this principle have been validated effectively by on-board side-looking and forward looking operations.