Digital Navstar receiver

Details Digital Navstar receiver Digital Navstar receiver

1984-11-29

1986-09-23

Bookbinder, Marc E.

Pulse or digital communications

Repeaters

Testing

343420, 375115, 375118, H04B 130, H04L 704

Patent

active

046139770

ABSTRACT:
A receiver for a Navstar satellite navigation system wherein the satellite signals are down converted into zero i.f. quadrature signals (70a, 70b) and digitized (71a, 71b). The digitized signals address a PROM (72) together with additional bits representing phase rotation information (74) and locally generated code signals (e,l,p). The PROM is loaded with data in the form of "look-up" tables incorporating combinations of all input signal conditions whereby the combined address signals effect correlation and phase rotation simultaneously of the received signals.

REFERENCES:
patent: 4320526 (1982-03-01), Gitlin
patent: 4509017 (1985-04-01), Andren et al.
patent: 4527278 (1985-07-01), Deconche et al.
patent: 4530103 (1985-07-01), Mosley, Jr. et al.
B. D. Elrod, H. A. Bustamante and F. D. Natali, "A GPS Receiver Design for General Aviation and Navigation", IEEE Plans 80: Position Location and Navigation Symposium, Atlantic City, N.J., U.S.A., Dec. 8-11, 1980, pp. 33-41.
P. Ward, "An Advanced Navstar GPS Multiplex Receiver", IEEE Plans 80: Dec. 8-22, 1980, pp. 51-58.
Peter C. Ould and Robert J. VanWechel, "All-Digitial GPS Receiver Mechanization", Navigation: Journal of the Institute of The Institute of Navigation, vol. 28, No. 3, Fall 1981, pp. 178-188.
G. L. Bjornsen and W. M. Hutchinson, "GDM/GPS Receiver Hardware Implementation", NAECON '77 Record, pp. 303-309.

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