| 摘要 |
<p>PURPOSE:To eliminate data outputs of unnecessary target by providing a digital type stationary target erasing MTT circuit to the front stage of a range gate part, and adding a means of eliminating unnecessary signals such as radar interference waves to the target tracking part in the rear stage. CONSTITUTION:A radar video signal is applied by a quantizer 1 to a digital MTT circuit 4 by which the quantized video signal of only the moving target is obtained. Thence, it is outputted via a detecting circuit 5 to a range gate part 2. In the range gate part 2, both the moving target and the target unnecessary waves are combined into one spot which is outputted to the 1st change-over circuit 6. Next, it is inputted to a target tracking part 33 via the 2nd change-over circuit 9, etc. The target tracking part 33 tracks and assigns the moving target by means of the track pole of an indicator while observing the video of the indicator and automatically sets a window of a specific range before and behind the assigned moving target. The probability at which the target combined into one spot by unnecessary waves such as radar interference waves enters the inside of the window is extremely small. Hence, the unnecessary target is eliminated by such constitution.</p> |
