| 摘要 |
PROBLEM TO BE SOLVED: To solve the problem that a background clutter with large signal intensity around a target is erroneously detected as the target when guidance by a radiowave seeker using DBS (Doppler Beam Sharpening) processing is switched to the guidance by a light wave seeker in a guidance system which generates a guidance signal on the basis of target position information acquired by the radiowave seeker at long distance, and by the light wave seeker at short distance to the target buried in the background clutter.SOLUTION: At a point of time at long distance where resolution increase is possible by DBS processing, a tracking gate calculation section of a light wave seeker generates a tracking gate for discriminating between a target and a background clutter on the basis of target estimated position information generated by a target position estimation section of a radiowave seeker. At a point of time when it becomes short distance where the resolution increase of DBS is impossible, only target information is extracted by correcting the tracking gate generated in advance by relative distance information of the target output from the target position estimation section, and applying the corrected tracking gate to a target extraction image generated by a target image extraction section. |
