| 摘要 |
<p>PURPOSE:To continue a tracking operation smoothly by providing a means for calculating a predicted gate position after two scans, a clutter gate generator, and a clutter level detector and a corrector, and detecting and suppressing a clutter previously. CONSTITUTION:A target tracking device is provided additionally with a multiplier 11, adder 2, clutter gate generator 13, clutter level detector 14, and corrector 15. Then, the target predicted position and speed at the point of time of the (N)th scan are used when the (N-1)the (N: integer) scan is finished, and the predicted position at the time of the (N+1)th scan is calculated by the multiplier 11 and adder 12 and inputted to the clutter gate generator 13. Then, the clutter level detector 14 detects the level of the clutter, which is converted into the gain control voltage of an IF amplifier 1, and inputted to the corrector 15 and added to the AGC voltage at the end of the (N+1)th scan. Consequently, the input signal of a target pattern generating circuit 4 consists of only a target signal because the clutter is suppressed below a detectable level, so that tracking operation is carried on smoothly.</p> |
