Control and features for satellite positioning system receivers
First Claim
Patent Images
1. A satellite positioning receiver, comprising:
- a signal processing subsystem including a signal input and configured to process an inputted signal at the signal input and output the processed signal;
a Fast Fourier Transfer (FFT) subsystem configured to receive the processed signal, determine parameters from the processed signal, and output the determined parameters;
a hardware tracking loop configured to receive the determined parameters from the FFT subsystem and determine one or more corrections for adjusting the signal input to the signal processing subsystem, wherein the hardware tracking loop is controlled by an oscillator;
a processor; and
a memory coupled to the processor, the memory including one or more instructions that when executed by the processor, cause the satellite positioning receiver to implement a software tracking loop for selectively assisting the hardware tracking loop in determining the one or more corrections for adjusting the signal input to the signal processing subsystem.
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Abstract
Control and feature systems for processing signals from a satellite positioning system include an expert system receiver manager; a joint detection, carrier centring and bit sync acquisition subsystem; peak detection; a multi-dimensional measurement interpolation subsystem; a system for mode switching between a navigational signal; and power control module for receiver.
231 Citations
15 Claims
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1. A satellite positioning receiver, comprising:
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a signal processing subsystem including a signal input and configured to process an inputted signal at the signal input and output the processed signal; a Fast Fourier Transfer (FFT) subsystem configured to receive the processed signal, determine parameters from the processed signal, and output the determined parameters; a hardware tracking loop configured to receive the determined parameters from the FFT subsystem and determine one or more corrections for adjusting the signal input to the signal processing subsystem, wherein the hardware tracking loop is controlled by an oscillator; a processor; and a memory coupled to the processor, the memory including one or more instructions that when executed by the processor, cause the satellite positioning receiver to implement a software tracking loop for selectively assisting the hardware tracking loop in determining the one or more corrections for adjusting the signal input to the signal processing subsystem. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A method for operating a satellite positioning receiver, comprising:
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receiving a signal at a signal input of a signal processing subsystem; processing the received signal by the signal processing subsystem; determining parameters from the processed signal by a Fast Fourier Transfer (FFT) subsystem; using the parameters to determine one or more corrections, by a hardware tracking loop, for adjusting the signal input of the signal processing subsystem; and using a software tracking loop to selectively assist the hardware tracking loop in determining the one or more corrections. - View Dependent Claims (10, 11, 12, 13, 14, 15)
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Specification