DUAL BEAM DOPPLER SHIFT HYDROPHONE
Assignee
Filed
Dec 10, 1979
Granted
Mar 5, 1991
Location
STORRS CT US
Abstract
A dual beam hydrophone wherein a reference laser beam and a signal laser m are both modulated simultaneosuly by the movement of reflecting surfaces responding to pressure variatrions due to an impinging acoustic wave. Each beam, travels the same path length within the hydrophone before being detected, thus eliminating any otherwise needed signal compensation. The reference beam and signal beam are acoustically modulated 180 degrees out of phase which reduces by one half the number of reflections normally required to produce the same sensitivity.
Source: Google Patents
35 USC §181 Secrecy Order
Imposed
Apr 9, 1982
Rescinded
May 4, 1990
Duration
8 years
Inventor
- 1PETER SHAJENKO
Record Details
- Patent number
- US 4998225
- Application
- 06103826
- Aerospace match
- Yes
- Dataset source
- 35 USC §181 SO records
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