Digital global positioning system receiver

Pulse or digital communications – Repeaters – Testing

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342386, 364443, H04K 100

Patent

active

047854634

ABSTRACT:
A digital receiver for GPS C/A-code signals is described. The GPS receiver of the present invention provides reception and tracking a plurality of satellites simultaneously, using four separate receiver channels. The GPS receiver of the present invention includes an analog front-end for selecting and frequency translating the received GPS signal. The GPS receiver further includes a highspeed digital signal processor for recovering the despread data of the GPS signal. The baseband signal is further processed by a general purpose digital signal processor for signal search, tracking, and data recovery operations, and a microprocessor provides overall receiver control, and interface with the operator of the GPS receiver.

REFERENCES:
patent: 3548107 (1970-12-01), Webb
patent: 3706933 (1972-12-01), Bidell et al.
patent: 4199660 (1980-04-01), Dill et al.
patent: 4221005 (1980-09-01), La Flame
patent: 4295093 (1981-10-01), Middleton
patent: 4346477 (1982-08-01), Gordy
patent: 4361391 (1982-11-01), Lobenstein et al.
patent: 4426712 (1984-01-01), Gorski-Popiel
patent: 4435822 (1984-03-01), Spencer et al.
patent: 4468784 (1984-08-01), Jaginow et al.
patent: 4468793 (1984-08-01), Johnson et al.
patent: 4485383 (1984-11-01), Maher
patent: 4611209 (1986-09-01), Lemelson et al.
patent: 4613864 (1986-09-01), Hofgen
patent: 4613977 (1986-09-01), Wong et al.
patent: 4633260 (1986-12-01), Fukuhara
patent: 4651154 (1987-03-01), Wong et al.
Chao "Low Cost RF/LSI Technologies for Commercial GPS Receivers" Microwave System Application Technology Conference, Mar. 1983.
Yiu et al, "A Low Cost GPS Receiver for Land Navigation", Journal of the Institute of Navigation, Fall, 1982.
Borel et al, "Texas Instrument Phase I GPS User Equipment", The Institute of Navigation: The Global Positioning System, pp. 87-102, 1980.
Noe et al, "A position Fixing Algorithm for the Low Cost GPS Receiver", IEEE Transactions on Aerospace and Electronic System AES-12, vol. No. 2, pp. 295-297.
Agaral "New Recursive Digital Filter Structure Having Very Low Sensitivity and Round Noise", IEEE Transaction on Circuits and Systems, vol. CAS-27, No. 12, Dec. 1975.
Yost et al, "A Modified PN Code Tracking Loop: Its Performance Analysis and Comparative Evaluation", IEEE Transaction on Communication COM-30, vol. 5, pp. 1027-1036, May 1982.
Janc, "Consideration of Various Error Source in a Practical Automatic Vehicle Location System", IEEE Transaction on Vehicular Technology, Mar. 1984, pp. 277-284.
"System Specification for the NAVSTAR Global Positioning System", U.S. Air Force 55-GPS-300B appendix I, pp. 1-11, I-20-I23, 3/3/80.
Hewlett Packard Application Note No. 920 "Harmonic Generation Using Stop Recovery Diodes and SRD Modules" Hewlett Packard Microwave Semiconductor Division, Nov. 1968.
Schuchman "Dither Signals and Their Effect on Quantization Noise", IEEE Transactions on Communication Technology, pp. 162-165, Dec. 1964.
Donov, "A High-Speed Random-Number Generator", Radio Electronics and Communication System, vol. 25, No. 4, pp. 88-90, 1982.
Bellanger et al, "Digital Filtering by Popyphase Network: Application to Sample Rate Alteration and Filter Banks", IEEE Transaction on Acoustics Speech, and Signal Processing, vol. ASSP-24, No. 2, Apr. 1976.
Arthur Stephenson "Digitizing Multiples RF Signals Requires an Optimum Sampling Rate", Electronics, Mar. 27, 1972, pp. 106-110.
Chiffy et al, "Communication Receivers of Future", Journal Nov./Dec. 1975, pp. 16-21.
Tierney "A Digital Frequency Synthesizer", IEEE Transaction on Audio and Ectroacoustics, vol. AU-19, No. 1.
Muto et al. "Designing a 10 Bit, 20 Ms/Second Analog-to-Digital Converter System", Hewlett Packard Journey, vol. 33, No. 11, pp. 9-29, Nov. 1982.
Wesley Iversen, "Digital hf Radio Breaches Military Solid Analog Wall", Electronics, Jun. 28, 1984.
Spilker, "GPS Signal Structure and Performance Characteristics:, pp. 29-54.

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