| 摘要 |
<p>PROBLEM TO BE SOLVED: To detect a target signal accurately even when a dynamic fluctuation appears in the clutter by introducing an adaptive processing into the setting of a threshold being employed at the scan correlation processing. SOLUTION: An adder circuit 24 adds the cell average and the mean deviation of input signals X to set a threshold value. An operating circuit 10 sets a zero specific gravity for the input signal X having a level lower than the threshold value and performs weighted addition of the input signal X and a radar signal on a memory circuit 11. Since the threshold is set adaptively at each point of time depending on on the level and the fluctuation of the input signal X, even such a clutter as exhibiting a random level fluctuation can be suppressed properly.</p> |
