MULTIPLE FREQUENCY SYNTHETIC APERTURE SONAR
Assignee
US Government
Filed as: UNITED STATES OF AMERICA, AS REPRESENTED BY THE SECRETARY OF THE NAVY
Filed
Jan 12, 1981
Granted
Aug 28, 1990
Location
Arlington VA (defense contractors)
Abstract
A dual frequency, synthetic aperture, sonar system includes a transmitter r projecting insonifying pings alternatively at first and second frequencies and a linear receiving array carried by a vehicle so as to receive returns from said pings. The first and second frequency returns are separated and subjected to processing in parallel channels where they are resolved into in-phase and quadrature components for subsequent phase-error correction, coherent addition, and synthetic aperture beamforming.
Source: Google Patents
35 USC §181 Secrecy Order
Imposed
Aug 12, 1982
Rescinded
Feb 21, 1990
Duration
7 years, 6 months
Inventor
- 1FRANCIS J. HIGGINS
Sensitive facility: Arlington VA (defense contractors)
Record Details
- Patent number
- US 4953143
- Application
- 06237352
- Aerospace match
- Yes
- Dataset source
- 35 USC §181 SO records
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