DIRECTIONAL ENERGY RECEIVING SYSTEMS FOR USE IN THE INDICATION OF THE DIRECTION OF ARRIVAL OF THE RECEIVED SIGNAL
Assignee
MASSA PRODUCTS CORPORATION
Filed
May 13, 1985
Granted
Mar 17, 1998
Location
COHASSET MA US
Abstract
The bearing accuracy and long-range sonar target detection capability of a multi-cardioid directional receiving hydrophone array is improved by electronically producing mirror images of the cardioid directional patterns of each directional hydrophone in the array whereby the number of receiving channels are effectively doubled by this invention which in turn results in higher signal-to-noise ratios especially when receiving distant relatively weaker sonar signals. As a result, the accuracy of measurement of target range and bearing by the improved directional hydrophone array will be significantly increased.
Source: Google Patents
35 USC §181 Secrecy Order
Imposed
Jul 2, 1986
Rescinded
Jul 7, 1997
Duration
11 years
Inventor
- 1FRANK MASSA
Record Details
- Patent number
- US 5729507
- Application
- 06733456
- Aerospace match
- Yes
- Dataset source
- 35 USC §181 SO records
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