CAR NAVIGATION SYSTEM AND METHOD IN WHICH GLOBAL NAVIGATION SATELLITE SYSTEM (GNSS) AND DEAD RECKONING (DR) ARE MERGED
First Claim
1. A car navigation system, comprising:
- a sensor unit comprising a plurality of sensors, each, configured to measure a state of a vehicle using a predetermined scheme and to obtain sensor data;
a vehicle to everything (V2X) unit configured to receive the sensor data from the sensor unit, and comprising a global navigation satellite system (GNSS) module to thereby receive a satellite signal and to generate GNSS data; and
a position estimator configured to receive the sensor data and the GNSS data from the V2X unit, to evaluate an accuracy of each of the sensor data and the GNSS data using a predetermined scheme, and to obtain position coordinates of the vehicle by merging GNSS position coordinates obtained from the GNSS data and dead reckoning (DR) position coordinates obtained from the sensor data based on the evaluation result.
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Accused Products
Abstract
Disclosed is a car navigation system and method. The present invention includes a sensor unit including a plurality of sensors, each, configured to measure a state of a vehicle using a predetermined scheme and to obtain sensor data; a vehicle to everything (V2X) unit configured to receive the sensor data from the sensor unit, and including a global navigation satellite system (GNSS) module to thereby receive a satellite signal and to generate GNSS data; and a position estimator configured to receive the sensor data and the GNSS data from the V2X unit, to evaluate an accuracy of each of the sensor data and the GNSS data using a predetermined scheme, and to obtain position coordinates of the vehicle by merging GNSS position coordinates obtained from the GNSS data and dead reckoning (DR) position coordinates obtained from the sensor data based on the evaluation result.
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Citations
16 Claims
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1. A car navigation system, comprising:
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a sensor unit comprising a plurality of sensors, each, configured to measure a state of a vehicle using a predetermined scheme and to obtain sensor data; a vehicle to everything (V2X) unit configured to receive the sensor data from the sensor unit, and comprising a global navigation satellite system (GNSS) module to thereby receive a satellite signal and to generate GNSS data; and a position estimator configured to receive the sensor data and the GNSS data from the V2X unit, to evaluate an accuracy of each of the sensor data and the GNSS data using a predetermined scheme, and to obtain position coordinates of the vehicle by merging GNSS position coordinates obtained from the GNSS data and dead reckoning (DR) position coordinates obtained from the sensor data based on the evaluation result. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A car navigation method of a car navigation system comprising a sensor unit comprising a plurality of sensors, each, configured to measure a state of a vehicle using a predetermined scheme and to obtain sensor data, a V2X unit configured to receive the sensor data from the sensor unit, and comprising a GNSS module to thereby receive a satellite signal and to generate GNSS data, and a position estimator, the method comprising:
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by the position estimator, receiving at least one of the sensor data and the GNSS data from the V2X unit; obtaining DR position coordinates from the sensor data; obtaining GNSS position coordinates from the GNSS data; estimating a position of the vehicle based on the DR position coordinates and the GNSS position coordinates; calculating and evaluating an accuracy of each of the sensor data and the GNSS data using a predetermined scheme; and obtaining position coordinates of the vehicle by merging the GNSS position coordinates and the DR position coordinates based on the evaluation result. - View Dependent Claims (13, 14, 15, 16)
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Specification