Sonar signal processor and display

Details Sonar signal processor and display Sonar signal processor and display

1992-10-15

1993-10-05

Pihulic, Daniel T.

Communications, electrical: acoustic wave systems and devices

Echo systems

Distance or direction finding

367107, G01S 1500

Patent

active

052511855

ABSTRACT:
An improved sonar signal processor and display combining the use of both coherent and incoherent signal processors. In addition to a conventionally used matched filter detection processor, an incoherent signal processor comprising a cross-range energy filter and a down-range energy filter is used. The cross-range energy filter detects objects characterized by a narrow bearing response; whereas the down-range energy filter detects objects characterized by a narrow range response. The detection events resulting from the incoherent signal processor are displayed 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.

REFERENCES:
patent: 4831602 (1989-05-01), Kroenert et al.
patent: 5179542 (1993-01-01), Reese et al.

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