High Accuracy Satellite Receiving Controller and Associated Method
First Claim
1. A high accuracy satellite receiving controller, comprising:
- an analog-to-digital converter (ADC), for receiving an analog temperature and converting the same into a digital temperature;
a global positioning system (GPS) receiving module, for performing satellite positioning;
a frequency synthesizer, coupled to an external non-temperature-compensated crystal oscillator (non-TCXO), for generating an oscillating frequency signal for operating the GPS receiving module; and
a control unit, coupled to the ADC and the GPS receiving module;
wherein, the control unit generates an oscillation frequency adjustment value to the GPS receiving module to compensate accuracy of satellite positioning, and adaptively updates a temperature/frequency offset data.
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Accused Products
Abstract
A high accuracy satellite signal receiving controller and associated method is provided. The high accuracy satellite signal receiving controller includes a frequency synthesizer, and an analog-to-digital converter (ADC), a Global Positioning System (GPS) receiving module and a control unit. The frequency synthesizer, coupled to an external non-temperature-compensated crystal oscillator (non-TXCO), generates an oscillating frequency signal to the GPS receiving module. The ADC converts an analog temperature signal into a digital temperature signal. The control unit, coupled to the ADC, adaptively updates temperature/frequency offset data.
53 Citations
20 Claims
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1. A high accuracy satellite receiving controller, comprising:
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an analog-to-digital converter (ADC), for receiving an analog temperature and converting the same into a digital temperature; a global positioning system (GPS) receiving module, for performing satellite positioning; a frequency synthesizer, coupled to an external non-temperature-compensated crystal oscillator (non-TCXO), for generating an oscillating frequency signal for operating the GPS receiving module; and a control unit, coupled to the ADC and the GPS receiving module; wherein, the control unit generates an oscillation frequency adjustment value to the GPS receiving module to compensate accuracy of satellite positioning, and adaptively updates a temperature/frequency offset data. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A method of high accuracy satellite positioning utilizing a non-temperature-compensated oscillation signal, comprising steps of:
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receiving the non-temperature-compensated oscillation signal; determining whether a positioning solution is present; and estimating an oscillation frequency adjustment value according to an environmental temperature and a temperature/frequency offset data. - View Dependent Claims (14, 15, 16, 17, 18, 19, 20)
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Specification