Global positioning system receiver
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Accused Products
Abstract
This invention is directed to a receiver in a Global Positioning System Receiver that performs both correlation and navigation function to facilitate channel configuration. The receiver changes the sampling frequency in the software to interface with any type of radio frequency down converter. The correlator is incorporated within the navigation processing unit which resides in a programmable digital signal processor chip. A sampling clock directly connects the digital signal processor to radio frequency down converter.
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Citations
11 Claims
- 1. (canceled)
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2. (canceled)
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3. (canceled)
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4. (canceled)
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5. (canceled)
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6. A global positioning system receiver for performing both navigation and correlation functions, comprising:
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(a) a radio frequency down converter;
(b) a programmable digital signal processor;
(c) a navigation processing unit in communication with and residing within said programmable digital signal processor for performing navigation functions;
(d) a signal processing unit in communication with and residing within said programmable digital signal processor for performing signal correlation;
(e) a sampling clock connecting said radio frequency down converter to the programmable digital signal processor, whereby the integration of the navigation and correlation functions in the programmable digital signal processor obviates the need for a separate hardware correlator, the power consumption is reduced as a result of a fewer number of hardware components, and the ability to change the sampling frequency by programming the digital signal processor chip enables the programmable digital signal processor to interface with any type of the radio frequency down converter. - View Dependent Claims (7, 10)
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Specification