POSITIONING SYSTEM AND METHOD FOR USE IN A VEHICLE NAVIGATION SYSTEM
First Claim
1. A positioning system for use in a vehicle navigation or mapping system, comprising a data store for storing reference sensor measurement data and a processing resource configured to:
- obtain one or more sets of sensor measurement data from at least one sensor located on or in a vehicle, each set of sensor measurement being indicative of the distance of objects in an environment around the vehicle from the sensor, and each set of sensor measurement data comprising data obtained from a range of positions in a time or distance window along the direction of travel of the vehicle;
perform a correlation procedure correlating the one or more sets of sensor measurement data with the reference sensor measurement data; and
determine a relative position of the vehicle against stored location data associated with the stored reference sensor measurement data in dependence on the correlation procedure.
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Accused Products
Abstract
A positioning method for use in a vehicle navigation or mapping system is disclosed, and a system implementing such a method. The method comprises obtaining one or more sets of sensor measurement data from at least one sensor located on or in a vehicle, each set of sensor measurement being indicative of the distance of objects in an environment around the vehicle from the sensor, and each set of sensor measurement data comprising data obtained from a range of positions in a time or distance window along the direction of travel of the vehicle. A correlation procedure is performed correlating the one or more sets of sensor measurement data with stored reference sensor measurement data, and a relative position of the vehicle against stored location data associated with the stored reference sensor measurement data is determined in dependence on the correlation procedure.
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Citations
22 Claims
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1. A positioning system for use in a vehicle navigation or mapping system, comprising a data store for storing reference sensor measurement data and a processing resource configured to:
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obtain one or more sets of sensor measurement data from at least one sensor located on or in a vehicle, each set of sensor measurement being indicative of the distance of objects in an environment around the vehicle from the sensor, and each set of sensor measurement data comprising data obtained from a range of positions in a time or distance window along the direction of travel of the vehicle; perform a correlation procedure correlating the one or more sets of sensor measurement data with the reference sensor measurement data; and determine a relative position of the vehicle against stored location data associated with the stored reference sensor measurement data in dependence on the correlation procedure. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A positioning method for use in a vehicle navigation or mapping system, comprising:
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obtaining one or more sets of sensor measurement data from at least one sensor located on or in a vehicle, each set of sensor measurement being indicative of the distance of objects in an environment around the vehicle from the sensor, and each set of sensor measurement data comprising data obtained from a range of positions in a time or distance window along the direction of travel of the vehicle; performing a correlation procedure correlating the one or more sets of sensor measurement data with stored reference sensor measurement data; and determining a relative position of the vehicle against stored location data associated with the stored reference sensor measurement data in dependence on the correlation procedure. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16, 17)
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18. A system for maintaining reference sensor measurement data, comprising a data store for storing reference sensor measurement data and a processing resource configured to:
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receive one or more sets of sensor measurement data from at least one sensor located on or in a vehicle, each set of sensor measurement data being indicative of the distance of objects from the sensor, and each set of sensor measurement data comprising data obtained from a range of positions in a time or distance window along the direction of travel of the vehicle; determine whether the received one or more sets of sensor measurement data differ from the stored reference sensor measurement data, said difference being indicative of a temporary or permanent change in the environment; and amend the stored reference sensor measurement data using the received one or more sets of sensor measurement data if such a difference is determined. - View Dependent Claims (19)
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20. A method for maintaining reference sensor measurement data, comprising:
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receiving one or more sets of sensor measurement data from at least one sensor located on or in a vehicle, each set of sensor measurement data being indicative of the distance of objects from the sensor, and each set of sensor measurement data comprising data obtained from a range of positions in a time or distance window along the direction of travel of the vehicle; determining whether the received one or more sets of sensor measurement data differ from stored reference sensor measurement data, said difference being indicative of a temporary or permanent change in the environment; and amending the stored reference sensor measurement data using the received one or more sets of sensor measurement data if such a difference is determined. - View Dependent Claims (21, 22)
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Specification