Passive sonar

A variable depth sonar is adapted to provide passive multipath target ranging and depth estimates. The sonar employs an estimation procedure which is adapted to sonars with relatively small sensors and limited computing power. A feature of the invention is the introduction of a change of depth of th...

Ausführliche Beschreibung

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Bibliographische Detailangaben
1. Verfasser:	PAUL L FEINTUCH
Format:	Patent
Sprache:	eng
Schlagworte:	ANALOGOUS ARRANGEMENTS USING OTHER WAVES DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION ORRERADIATION OF RADIO WAVES MEASURING PHYSICS RADIO DIRECTION-FINDING RADIO NAVIGATION TESTING
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Beschreibung
Zusammenfassung:	A variable depth sonar is adapted to provide passive multipath target ranging and depth estimates. The sonar employs an estimation procedure which is adapted to sonars with relatively small sensors and limited computing power. A feature of the invention is the introduction of a change of depth of the sonar receiver, mounted on a mobile platform, into the estimation process. Measurements at the two different depths are combined to provide target range and depth.