Method and apparatus for reducing the effects of impulse noise i

Details Method and apparatus for reducing the effects of impulse noise i Method and apparatus for reducing the effects of impulse noise i

1983-09-28

1986-12-23

Blum, Theodore M.

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

Directive

Beacon or receiver

342390, G01S 124

Patent

active

046315438

ABSTRACT:
The effects of impulse noise on the operation of a microprocessor-controlled Loran-C receiver are reduced by muting or attenuating the received signals in the front end of the receiver ahead of the receiver gain during a time period which preceeds the start time of the pulses being tracked. The attenuation is selectively removed after the start time of each pulse being tracked to permit the receiver to perform its time difference of pulse arrival measurements in the normal manner. The attenuation is also selectively removed during those time periods in which the receiver performs its envelope slope, skywave/groundwave and other such samplings. The attenuation is provided by a muting circuit which is controlled by a time gate signal that derives from the microprocessor of the receiver.

REFERENCES:
patent: 3858216 (1974-12-01), DeVaul
patent: 4195299 (1980-03-01), Van Etten
patent: 4214245 (1980-07-01), Fujino et al.
patent: 4318105 (1982-03-01), Brodeur
patent: 4325067 (1982-04-01), Brodeur
patent: 4392138 (1983-07-01), Jasper et al.
patent: 4416017 (1983-11-01), Jasper et al.
patent: 4445223 (1984-04-01), Jasper et al.
patent: 4468668 (1984-08-01), Brodeur

Affiliated with

Also associated with

Rating

Method and apparatus for reducing the effects of impulse noise i does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Method and apparatus for reducing the effects of impulse noise i, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and apparatus for reducing the effects of impulse noise i will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-174412