GLOBAL POSITIONING SYSTEM RECEIVER AND GORRELATING CIRCUIT THEREOF
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Accused Products
Abstract
A global positioning System receiver and a correlating circuit thereof are disclosed. They sequentially and in parallel generate the portion of bits of the C/A code representing the satellite, sequentially and in parallel generate the portion of bits of the corrected frequency code of Doppler effect, and sequentially outputs the portion of bits of the C/A code and the corrected frequency code therefrom for multiplying the data and the IF data and for adding the multiplications therefrom for generating the total addition values.
11 Citations
16 Claims
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1-6. -6. (canceled)
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7. A Global Positioning System (GPS) receiver, comprising:
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a RF front end, adapted to receive, demodulate and sample a RF signal for generating a IF data;
a data receiving register, coupled to the RF front end, adapted to store the IF data therefrom;
a correlating circuit, coupled to the data receiving register, adapted to receive the IF data for sequentially and in parallel generating a portion of bits of a C/A code representing a satellite and a portion of bits of a corrected frequency code of Doppler effect, then sequentially multiplying the portion of bits of the C/A code, the portion of bits of the corrected frequency code, and the IF data, adding multiplications therefrom for generating a total addition value and searching a maximum thereof for identifying the satellite transmitting the IF data;
a data extractor, coupled to the correlating circuit, adapted to extract a navigation data from the IF data; and
a navigation processor, coupled to the data extractor, adapted to receive the navigation data for generating a longitude-latitude data and a standard time data. - View Dependent Claims (8, 9, 10, 11, 12, 13, 14, 15, 16)
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Specification