Loran-C signal receiving apparatus

Details Loran-C signal receiving apparatus Loran-C signal receiving apparatus

1984-10-04

1986-12-30

Blum, Theodore M.

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

Directive

Beacon or receiver

364452, G01S 124

Patent

active

046332600

ABSTRACT:
A system for detecting a particular cycle of a received Loran-C signal in a Loran-C receiving apparatus, recognizes the envelope of a carrier wave in each Loran-C pulse for a predetermined duration after the onset of the Loran-C pulse. The system compares the detected envelope to reference envelope data so as to identify where on the actual Loran-C envelope the measured envelope lies in order to identify the particular cycle of the received Loran-C pulse.

REFERENCES:
patent: 3868690 (1975-02-01), Miller
patent: 4166275 (1979-08-01), Michaels et al.
patent: 4268830 (1981-05-01), Brodeur
patent: 4482896 (1984-11-01), Menick
O'Halloran et al; "Use of Loran-C in AVM ANDC.sup.2 Systems", 1980 Carnahan Conference on Crime Countermeasures, University of Kentucky, May 14-16, 1980.

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