| 摘要 |
<p>PURPOSE:To reduce errors by adding a circuit which varies the reference value of azimuth separation based upon a run length test and decides on a target output to a sliding window system. CONSTITUTION:Past hit information 5 corresponding to window size (W) is read out of a memory 23 and hit information 4 corresponding to (W) which is updated by the hit of the current sweep for testing following sweeps is stored in memory 4. When the start test reference of a target is satisfied, the current azimuth angle signal thetaL5 is stored in the memory. Then when the end test reference of the target is satisfied, the temporary termination signal 9 of the target is outputted and arithmetic thetaT-thetaL between an angle signal thetaT during temporary termination detection and a target start azimuth angle thetaL read out of the memory is carried out to output the run length 10 of the target.</p> |
