Positioning system and method thereof
First Claim
1. A positioning system, comprising:
- a dead reckoning module, estimating a first positioning data according to a measurement data of a current epoch, a third positioning data, and a feedback positioning data of a previous epoch, estimating a second positioning data according to the feedback positioning data of the previous epoch and the measurement data of the current epoch, and transmitting the second positioning data to a Global Navigation Satellite System (GNSS) module;
the GNSS module, generating the third positioning data according to satellite communication or the second positioning data;
a Geographic Information System (GIS) module, fitting the third positioning data to a map to generate a fourth positioning data taken as an output of the positioning system; and
a calculating module, deriving the feedback positioning data of the current epoch from the fourth positioning data and the first positioning data according to predetermined weights, wherein the feedback positioning data of the current epoch is recursively fed back to the dead reckoning module for a next estimation.
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Accused Products
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.
6 Citations
12 Claims
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1. A positioning system, comprising:
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a dead reckoning module, estimating a first positioning data according to a measurement data of a current epoch, a third positioning data, and a feedback positioning data of a previous epoch, estimating a second positioning data according to the feedback positioning data of the previous epoch and the measurement data of the current epoch, and transmitting the second positioning data to a Global Navigation Satellite System (GNSS) module; the GNSS module, generating the third positioning data according to satellite communication or the second positioning data; a Geographic Information System (GIS) module, fitting the third positioning data to a map to generate a fourth positioning data taken as an output of the positioning system; and a calculating module, deriving the feedback positioning data of the current epoch from the fourth positioning data and the first positioning data according to predetermined weights, wherein the feedback positioning data of the current epoch is recursively fed back to the dead reckoning module for a next estimation. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A positioning system, comprising:
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a dead reckoning module, estimating a first positioning data according to a measurement data of a current epoch, a third positioning data, and a feedback positioning data of a previous epoch, estimating a second positioning data according to the feedback positioning data of the previous epoch and the measurement data of the current epoch, and transmitting the second positioning data to a Geographic Information System (GIS) module; a Global Navigation Satellite System (GNSS) module, generating the third positioning data according to satellite communication; the GIS module, fitting the third positioning data or the second positioning data to a map to generate a fourth positioning data taken as an output of the positioning system; and a calculating module, deriving the feedback positioning data of the current epoch from the fourth positioning data and the first positioning data according to predetermined weights, wherein the feedback positioning data of the current epoch is recursively fed back to the dead reckoning module for a next estimation. - View Dependent Claims (8, 9, 10, 11, 12)
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Specification