Global positioning system digital receiver

Details Global positioning system digital receiver Global positioning system digital receiver

1990-12-31

1992-09-15

Safourek, Benedict V.

Pulse or digital communications

Repeaters

Testing

375 1, 375 97, 36472803, 455207, 455209, 455260, 342352, 342357, H03D 302, H04L 2706

Patent

active

051484528

ABSTRACT:
A digital GPS (Global Positioning System) receiver for receiving a plurality of coded satellite signals. The plurality of satellite signals are transmitted by a corresponding plurality of satellites. Since these satellites are moving rapidly with respect to the receiver, Doppler shifting of the signals is exhibited. The signals are converted from analog to digital at intermediate frequency levels. The signals are then separated simultaneously into a plurality of digital signals corresponding to I and Q channel information for each transmitting satellite. A processor then converts these I and Q channel information signals to pseudo-range and broadcast data for navigation and time purposes.

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patent: 4569061 (1986-02-01), Breitwisch
patent: 4754465 (1988-06-01), Trimble
patent: 4769816 (1988-09-01), Hochstadt et al.
patent: 4785463 (1988-11-01), Janc et al.
patent: 4847862 (1989-07-01), Braisted et al.
patent: 4860321 (1989-08-01), Von der Embse

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