POSITIONING SYSTEM AND METHOD THEREOF
First Claim
1. A positioning system, comprising:
- a Global Navigation Satellite System (GNSS) module, generating a first positioning data according to satellite communication;
a dead reckoning module, estimating a second positioning data according to a measurement data, the first positioning data, and a feedback positioning data of a previous epoch;
a Geographic Information System (GIS) module, fitting the first positioning data to a map to generate a third positioning data taken as a final output of the positioning system; and
a calculating module, deriving the feedback positioning data of a current epoch from the third positioning data and the second positioning data according to predetermined weights, wherein the feedback positioning data is recursively fed back to the dead reckoning module for a next estimation.
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Abstract
The invention provides a positioning system. In one embodiment, the positioning system comprises a Global Navigation Satellite System (GNSS) module, a dead reckoning module, a Geographic Information System (GIS) module, and an calculating module. The GNSS module generates a first positioning data according to satellite communication. The dead reckoning module estimates a second positioning data according to a sensor'"'"'s measurement data, the first positioning data, and a feedback positioning data of a previous epoch. The GIS module fits the first positioning data to a map to generate a third positioning data taken as a final output of the positioning system. The calculating module integrates the third positioning data and the second positioning data according to predetermined weights to obtain the feedback positioning data of a current epoch, which is recursively fed back to the dead reckoning module for a next estimation.
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Citations
25 Claims
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1. A positioning system, comprising:
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a Global Navigation Satellite System (GNSS) module, generating a first positioning data according to satellite communication; a dead reckoning module, estimating a second positioning data according to a measurement data, the first positioning data, and a feedback positioning data of a previous epoch; a Geographic Information System (GIS) module, fitting the first positioning data to a map to generate a third positioning data taken as a final output of the positioning system; and a calculating module, deriving the feedback positioning data of a current epoch from the third positioning data and the second positioning data according to predetermined weights, wherein the feedback positioning data is recursively fed back to the dead reckoning module for a next estimation. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A positioning system, comprising:
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a Global Navigation Satellite System (GNSS) module, generating a first positioning data according to satellite communication; a dead reckoning module, estimating a second positioning data according to a measurement data, the first positioning data, and a feedback positioning data of a previous epoch; a calculating module, deriving a third positioning data from the first positioning data and the second positioning data according to predetermined weights; and a GIS module, fitting the third positioning data to a map to generate the feedback positioning data of a current epoch, which is taken as a final output of the positioning system and recursively fed back to the dead reckoning module for a next estimation. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16)
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17. A positioning system, comprising:
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a Global Navigation Satellite System (GNSS) baseband processor, generating a GNSS measurement data according to satellite communication; a dead reckoning sensor, generating a measurement data; a Kalman filter, estimating a first positioning data according to the sensor'"'"'s measurement data, the GNSS measurement data, and a second positioning data of a previous epoch; and a Geographic Information System (GIS) module, fitting the first positioning data to a map to generate the second positioning data of a current epoch, which is taken as a final output of the positioning system and recursively fed back to the Kalman filter for a next estimation. - View Dependent Claims (18, 19, 20, 21)
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22. A method of positioning, comprising:
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generating a GNSS measurement data with a Global Navigation Satellite System (GNSS) baseband processor according to satellite communication; generating a measurement data with a dead reckoning sensor; deriving a first positioning data from the sensor'"'"'s measurement data, the GNSS measurement data, and a feedback positioning data of a previous epoch when the first positioning data is available; fitting the first positioning data to a map with a geographic information system to generate a second positioning data of a current epoch, which is taken as a final output of the positioning system; and recursively feeding the second positioning data back as the feedback positioning data for derivation of the first positioning data of a next epoch. - View Dependent Claims (23, 24, 25)
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Specification