Vehicular navigation based on site specific sensor quality data
First Claim
1. A method for determining a location of a vehicle, the method comprising:
- establishing a first zone in a work area, the first zone being where reception location data is applied exclusively as refined location data, a location determining receiver providing the reception location data from reception of electromagnetic energy transmitted from terrestrial or satellite beacons;
establishing a second zone in the work area, the second zone being where optical location data is applied exclusively as refitted location data;
determining at least one of reception location data and optical location data to estimate preliminary location data indicating whether the vehicle is located in the first zone or the second zone; and
selecting one of the reception location data and the optical location data as the refined location data based on whether the preliminary indication data indicates that the vehicle falls within the established first zone or the second zone, respectively;
where the optical location data is selected as the refined location data if the estimated preliminary data is inconclusive with respect to the first zone and second zone and if the reception location data falls below a threshold reliability level.
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Abstract
A method and system for determining a location of a vehicle, the method comprises determining reception location data within a first cell of a work area for a vehicle. A reception quality estimator estimates reception quality data for the corresponding reception location data for the first cell. Optical location data is determined within a first cell of a work area for a vehicle. An optical quality estimator estimates optical quality data for the corresponding optical location data for the first cell. A data processor selects at least one of the reception location data and the optical location data as refined location data associated with the first cell based on the estimated reception quality data and estimated optical quality data.
75 Citations
16 Claims
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1. A method for determining a location of a vehicle, the method comprising:
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establishing a first zone in a work area, the first zone being where reception location data is applied exclusively as refined location data, a location determining receiver providing the reception location data from reception of electromagnetic energy transmitted from terrestrial or satellite beacons; establishing a second zone in the work area, the second zone being where optical location data is applied exclusively as refitted location data; determining at least one of reception location data and optical location data to estimate preliminary location data indicating whether the vehicle is located in the first zone or the second zone; and selecting one of the reception location data and the optical location data as the refined location data based on whether the preliminary indication data indicates that the vehicle falls within the established first zone or the second zone, respectively;
where the optical location data is selected as the refined location data if the estimated preliminary data is inconclusive with respect to the first zone and second zone and if the reception location data falls below a threshold reliability level.- View Dependent Claims (2, 3, 4, 5, 6)
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7. A method for determining a location of a vehicle, the method comprising:
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establishing a first zone in a work area, the first zone being where reception location data is applied exclusively as refined location data, a location determining receiver providing the reception location data from reception of electromagnetic energy transmitted from terrestrial or satellite beacons; establishing a second zone in the work area, the second zone being where optical location data is applied exclusively as refined location data; establishing a third zone in a the work area, the third zone being where dead-reckoning location data is applied exclusively as refined location data; determining at least one of reception location data, optical location data, and dead-reckoning location data to estimate preliminary location data indicating whether the vehicle is located in the first zone, the second zone, or the third tone; and selecting at least one of the reception location data, the optical location data, and dead-reckoning location data as the refined location data based on whether the preliminary indication data indicates that the vehicle falls within the established first zone, the established second zone, or the established third zone, respectively; where the dead-reckoning location data is selected as the refined location data if the estimated preliminary data is inconclusive with respect to the first zone, the second zone, and the third zone and if the reception location data is not available and if the optical location data is not available. - View Dependent Claims (8, 9, 10, 11, 12, 13)
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14. A system for determining a location of a vehicle, the system comprising:
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a reception quality estimator for establishing a first zone in a work area, the first zone being where reception location data is applied exclusively as refined location data; an optical quality estimator for establishing a second zone in the work area, the second zone being where optical location data is applied exclusively as refined location data; a dead-reckoning auality estimated for establishing a third zone in the work area, the third zone being where dead-reckoning location data is applied exclusively as refined location data; a location-sensing system for determining at least one of reception location data, optical location data, and dead-reckoning location data to estimate preliminary location data indicating whether the vehicle is located in the first zone, the second zone or the third zone;
the location-sensing system comprising a location determining receiver for providing the reception location data from reception of electromagnetic energy transmitted from terrestrial or satellite beacons; anda data processor for selecting at least one of the reception location data, the optical location data, and dead-reckoning location data as refined location data based on whether the preliminary indication data indicates that the vehicle falls within the first zone, the second zone, or the third zone, respectively. - View Dependent Claims (15, 16)
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Specification