NOISE SUPPRESSION PROCESSOR FOR A CARRIER TRACKING LOOP
Assignee
BOEING COMPANY, THE, SEATTLE, KING COUNTY, WASHINGTON A CORP OF DELAWARE
Filed
Jul 5, 1989
Granted
Nov 8, 1994
Location
KENT WA US
Abstract
A noise suppression processor maintains a carrier tracking loop in a receiver in lock in the presence of high noise levels to permit the receiver to measure range changes from a remote transmitter in noisy environments. The noise suppression processor is connected in the carrier tracking loop between the phase detector which produces the loop error signal and the loop filter. The noise suppression processor has a cubic-limiter transfer function to provide nonlinear amplification of the loop error signal while limiting the amplified error signal to predetermined maximum and minimum values.
Source: Google Patents
35 USC §181 Secrecy Order
Imposed
Nov 9, 1990
Rescinded
Mar 22, 1994
Duration
3 years, 4 months
Inventor
- 1GEORGE S. HATCHER
Record Details
- Patent number
- US 5363112
- Application
- 07375484
- Aerospace match
- Yes
- Dataset source
- 35 USC §181 SO records
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