PULSE CODED SONAR HAVING IMPROVED DOPPLER DETERMINATION FEATURE
Assignee
US Government
Filed as: UNITED STATES OF AMERICA AS REPRESENTED BY THE SECRETARY OF THE NAVY
Filed
Jan 29, 1982
Granted
Jul 15, 1997
Location
Arlington VA (defense contractors)
Abstract
The signal appearing at the receiver input of a pulse code active sonar dng a return echo period, is sampled, time compressed and stored in a memory. The time compressed sample is successive read-out of memory, with each individual "read-out" hetrodyned with a discretely different doppler compensation frequency signal. The successively processed read-outs are passed through an "on line" correlation detection device to determine presence of a correctly compensated pulse code echo.
Source: Google Patents
35 USC §181 Secrecy Order
Imposed
Jan 29, 1982
Rescinded
Feb 27, 1997
Duration
15 years, 1 month
Inventor
- 1Unknown Unknown
Sensitive facility: Arlington VA (defense contractors)
Record Details
- Patent number
- US 5648940
- Application
- 04701812
- Aerospace match
- Yes
- Dataset source
- 35 USC §181 SO records
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