Passive multipath target range and depth estimation using a vari

Details Passive multipath target range and depth estimation using a vari Passive multipath target range and depth estimation using a vari

1984-07-06

1995-05-30

Pihulic, Daniel T.

Communications, electrical: acoustic wave systems and devices

Distance or direction finding

With time interval measuring means

G01S 380

Patent

active

054208270

ABSTRACT:
A variable depth sonar is disclosed which is adapted to provide passive multipath target ranging and depth estimates. The sonar employs a novel estimation procedure which is adapted to sonars with relatively small sensors and limited computing power. A novel 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.
Other features and improvements are disclosed.

REFERENCES:
patent: 4198704 (1980-04-01), Munson
patent: 4312053 (1982-01-01), Lipsky

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