| 摘要 |
<p>In addition to a conventionally used matched filter detection processor (44), an incoherent signal processor (46) comprising a cross-range energy filter (28) and a down-range energy filter (32) is used, thereby combining the use of both coherent and incoherent signal processors (44,46). The cross-range energy filter (28) detects objects characterized by a narrow bearing response; whereas the down-range energy filter (32) detects objects characterized by a narrow range response. The detection events resulting from the incoherent signal processor (46) are displayed (36) in a subdued color to prevent distraction from the primary display events and to reduce the false alarm rate by allowing the sonar operator to view events in the context of natural boundaries. <IMAGE></p> |
