Communications: directive radio wave systems and devices (e.g. – Directive – Including a satellite
Patent
1991-02-28
1994-09-13
Issing, Gregory C.
Communications: directive radio wave systems and devices (e.g.,
Directive
Including a satellite
342 92, 375 1, H04B 719, H04B 1500, G01S 1300
Patent
active
053472845
ABSTRACT:
There is disclosed a global positioning system receiver method and system which converts the analog signals to digital signals prior to performing signal acquisition and GPS unique processing functions. The A/D converter uses full null zone processing to increase anti-jamming capability and 4-level output to reduce signal processing. A single analog and digital channel is used for both the L1 and L2 channels as well as for all P(Y)-code and C/A-code thus allowing full multi channel tracking with several channels each tracking a separate signal while the remainder of the channels rove over all of the signals on the alternate L-band with programmable duty cycles. The system allows for Y-code substitution for P-code by multiplexing a portion of the Y-code generated between multiple channels.
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"Low Cost Dynamic Testing of GPS Receivers", by Volpi et al., Texas Instruments Incorporated, pp. 1-8.
"TI420 Position/Navigation System Product Specification," Texas Instruments Incorporated, May 15, 1988 (Revision C).
LaPadula, III Leonard J.
Lu Chyi H.
Rekieta David W.
Scott Hugh L.
Stiles Mitchel B.
Donaldson Richard L.
Grossman Rene E.
Issing Gregory C.
Texas Instruments Incorporated
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