| 摘要 |
<p>PURPOSE:To obtain a signal processor for obtaining the frequency of a target doppler's hiding behind a main lobe clutter and reappearing and the time for reappearing. CONSTITUTION:A target doppler approach judging part 4 judges whether a target doppler is included in a designated range from a band width of a main lobe clutter or not according to the estimated condition of a linear filter part 3 and the output of a main lobe clutter measuring part 2, and if it is judged that it is included, the target doppler estimated condition which is the output of the linear filter 3 and the target doppler power are stored in a target doppler storing element 32. A first doppler gate setting element 33 sets the frequency of a target doppler's passing the main lobe clutter and reppearing on the first dopper gate when the target doppler approach judging part 4 judges that the target doppler approaches the main lobe clutter. A first reappearing time calculating element 34 calculates the amount of time elapsed until the target doppler appears at the first doppler gate.</p> |
