Method of and apparatus for Loran-C message communication with r

Details Method of and apparatus for Loran-C message communication with r Method of and apparatus for Loran-C message communication with r

1987-11-03

1989-04-11

Blum, Theodore M.

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

Directive

Beacon or receiver

342389, H01J 2970, H01J 2972

Patent

active

048210382

ABSTRACT:
A Loran-C communications technique and system are disclosed involving appropriate encoding of communication messages and logical multiplication and inversion of encoded signals prior to phase modulation of the Loran-C pulses, with novel bit-flip connections for producing complementary plus and minus modulation position shifts in the first and third and second and fourth, etc., of the Loran-C pulse groups, and with perfect balance irrespective of the nature of the raw data and irrespective of skywave interference.

REFERENCES:
patent: 3711725 (1973-01-01), Johannessen
patent: 3736590 (1973-05-01), Lipsey et al.
patent: 3774210 (1973-11-01), Mollod et al.
patent: 3889263 (1975-06-01), Johannessen
patent: 3921076 (1975-11-01), Currie
patent: 4001598 (1977-01-01), Johannessen
patent: 4151528 (1979-04-01), Johannessen
patent: 4392138 (1983-07-01), Jasper et al.
patent: 4423419 (1983-12-01), Johannessen
patent: 4482896 (1984-11-01), Menick
D. A. Feldman et al., "The Coast Guard Two Pulse Loran-C Communications System", Journal of the Institute of Navigation, vol. 23, No. 4, Winter 1976-77, pp. 279-285.
"Proceedings of the Institute of Navigation National Marine Navigation Meeting", Hunt Valley, Maryland, Oct. 14-15, 1975.
Walter N. Dean, "Clarinet Pilgrim System", The Magnavox Company Government and Industrial Group, Fort Wayne, Indiana; Sep. 30, 1973.
ITT Avionics Division, "Loran-C Phase Modulation Study, Final Technical Report", vol. I, Jun. 1970.
Radio Navigation Journal 1975, Wild Goose Association, Acton, Massachusetts.

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