Noise suppression processor for a carrier tracking loop

Details Noise suppression processor for a carrier tracking loop Noise suppression processor for a carrier tracking loop

1989-07-05

1994-11-08

Hellner, Mark

Communications: directive radio wave systems and devices (e.g.,

Directive

Beacon or receiver

331 17, H03D 318

Patent

active

053631129

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.

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