Methods and apparatus for evaluating operation of a vehicle onboard navigation system using lateral offset data
First Claim
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1. A method for assessing operation of a navigation system onboard a vehicle, the method comprising:
- determining a sensor-based lateral offset change using vehicle onboard sensor data;
determining a second lateral offset change using navigation system data;
computing a difference between the sensor-based lateral offset change and the second lateral offset change;
performing secondary calculations using the difference to produce a result; and
when the result is greater than a threshold error value, providing an error notification;
wherein determining the sensor-based lateral offset change further comprises;
detecting a lane marker using a sensor onboard the vehicle;
determining a first relative offset between the sensor and the lane marker, the vehicle onboard sensor data comprising the first relative offset;
determining a second relative offset between the sensor and the lane marker, after a designated period of time, the vehicle onboard sensor data comprising the second relative offset; and
computing a change between the first relative offset and the second relative offset, wherein the sensor-based lateral offset change comprises the change.
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Abstract
A method for assessing operation of a navigation system onboard a vehicle is provided. The method determines a sensor-based lateral offset change using vehicle onboard sensor data; determines a second lateral offset change using navigation system data; computes a difference between the sensor-based lateral offset change and the second lateral offset change; performs secondary calculations using the difference to produce a result; and when the result is greater than a threshold error value, provides an error notification.
21 Citations
18 Claims
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1. A method for assessing operation of a navigation system onboard a vehicle, the method comprising:
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determining a sensor-based lateral offset change using vehicle onboard sensor data; determining a second lateral offset change using navigation system data; computing a difference between the sensor-based lateral offset change and the second lateral offset change; performing secondary calculations using the difference to produce a result; and when the result is greater than a threshold error value, providing an error notification; wherein determining the sensor-based lateral offset change further comprises; detecting a lane marker using a sensor onboard the vehicle; determining a first relative offset between the sensor and the lane marker, the vehicle onboard sensor data comprising the first relative offset; determining a second relative offset between the sensor and the lane marker, after a designated period of time, the vehicle onboard sensor data comprising the second relative offset; and computing a change between the first relative offset and the second relative offset, wherein the sensor-based lateral offset change comprises the change. - View Dependent Claims (2, 3, 4, 5)
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6. A system for assessing operation of a navigation system onboard a vehicle, the system comprising:
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system memory; a navigation system, configured to detect a plurality of vehicle positions; at least one vehicle sensor, configured to obtain first lateral offset data associating the vehicle to a lane marker; and at least one processor, communicatively coupled to the system memory, the navigation system, and the at least one vehicle sensor, the at least one processor configured to execute processing logic configured to; compute second lateral offset data based on the plurality of vehicle positions detected by the navigation system; calculate a difference between the first lateral offset data and the second lateral offset data; and determine whether the navigation system is operating within allowable error limits, based on the difference. - View Dependent Claims (7, 8, 9, 10, 11, 12, 13)
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14. A non-transitory, computer-readable medium containing instructions thereon, which, when executed by a processor, perform a method comprising:
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calculating a difference between a first lateral vehicle offset to a second lateral vehicle offset, wherein the first lateral vehicle offset is provided by a vehicle sensor, and wherein the second lateral vehicle offset is based on data obtained from a navigation system onboard a vehicle, by; obtaining a first position for the vehicle from the navigation system; associating the first position to a landmark using a map database, wherein map data associated with the landmark is located in the map database, and wherein the map database is accessible onboard the vehicle; determining a first lateral offset, based on the map data associated with the landmark; obtaining a second position for the vehicle from the navigation system, after a designated period of time; associating the second position to the landmark using the map database; determining a second lateral offset, based on the map data associated with the landmark; and computing a change between the first lateral offset and the second lateral offset, wherein the second lateral vehicle offset comprises the change; and determining whether the navigation system is functioning within a predefined error bound, based on the difference. - View Dependent Claims (15, 16, 17, 18)
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Specification