Correcting location data of connected vehicle
A vehicle and a traffic infrastructure device both determine their respective locations, at least one of which uses a positioning device to determine its location. At least one sends its respective location to the other, which compares the two locations, identifies a location difference, generates calibration information based on the location difference, and either calibrates the positioning device based on the calibration information or transmits the calibration information to the other device for the other device to calibrate the positioning device.
1. A method for improving accuracy of location data of a vehicle in communication with a traffic system, the method comprising:
receiving a first location from a positioning receiver associated with the vehicle while the vehicle is in an area;
receiving a second location wirelessly from a traffic infrastructure device that is located in the area, wherein the second location is derived from spatial data of the area captured by a sensor associated with the traffic infrastructure device and predetermined location data mapped with the spatial data;
comparing the first location and the second location;
identifying a location difference between the first location and the second location; and
calibrating the positioning receiver based on the identified location difference.
2. The method of claim 1 , wherein the first location includes predetermined location data based on a prior calculated global navigation satellite system (GNSS) location coordinate associated with the vehicle.
3. The method of claim 1 , wherein the area is defined based on a wireless communication range of a short-range wireless transceiver used associated with the traffic infrastructure device.
4. The method of claim 1 , wherein the location difference includes a distance between the first location and the second location, and wherein calibrating the positioning receiver based on the location difference includes offsetting subsequent locations received from the positioning receiver by an calibration distance that is based on the distance between the first location and the second location.
5. The method of claim 1 , wherein the location difference is associated with a direction between the first location and the second location, and wherein calibrating the positioning receiver based on the location difference includes offsetting subsequent locations received from the positioning receiver in a calibration direction that is based on the direction between the first location and the second location.
6. The method of claim 1 , wherein the location data are mapped with the spatial data by dividing the area captured by the sensor into a plurality of sub-areas and mapping the location data to the plurality of sub-areas, the method further comprising:
determining a sub-area of the plurality of sub-areas that the vehicle is in; and
extracting, from the predetermined location data, location data of the determined sub-area, wherein the second location corresponds to the extracted location data.
7. A system of improving positioning accuracy, the system comprising:
a positioning receiver that identifies a first location based on receipt of one or more positioning signals;
a wireless communication transceiver that receives a second location wirelessly from a second device, wherein at least one of the first location or the second location is derived from spatial data of an area captured by a sensor and predetermined location data mapped with the spatial data;
a memory that stores instructions; and
a processor that executes the instructions, wherein execution of the instructions by the processor:
compares the first location and the second location,
identifies a location difference between the first location and the second location, and
calibrates the positioning receiver using the location difference.
8. The system of claim 7 , wherein the second device is a traffic infrastructure device, and wherein the wireless communication transceiver and the positioning receiver are associated with a vehicle.
9. The system of claim 7 , wherein the second device is a first vehicle, and wherein the wireless communication transceiver and the positioning receiver are associated with a second vehicle.
10. The system of claim 7 , wherein the second device is a vehicle, and wherein the wireless communication transceiver and the positioning receiver are associated with a traffic infrastructure device.
11. The system of claim 7 , wherein the location difference includes a distance between the first location and the second location, and wherein the processor calibrates the positioning receiver based on the location difference by offsetting subsequent locations received from the positioning receiver by an calibration distance that is based on the distance between the first location and the second location.
12. The system of claim 7 , wherein the location difference is associated with a direction between the first location and the second location, and wherein the processor calibrates the positioning receiver based on the location difference by offsetting subsequent locations received from the positioning receiver in a calibration direction that is based on the direction between the first location and the second location.
13. The system of claim 7 , wherein the processor executes further instructions to generate calibration information based on the location difference by converting a format of the location difference, and wherein the processor calibrates the positioning receiver based on the calibration information.
14. The system of claim 7 , wherein the processor executes further instructions to generate calibration information based on the location difference by calculating an average vector from a vector of the location difference and one or more other calibration vectors, and wherein the processor calibrates the positioning receiver based on the calibration information.
15. A method of improving positioning accuracy, the method comprising:
receiving a first location from a first device;
receiving a second location wirelessly from a second device, the second location identified using a positioning receiver associated with the second device, wherein at least one of the first location or the second location is derived from spatial data of an area captured by a sensor and predetermined location data mapped with the spatial data;
comparing the first location and the second location;
identifying a location difference between the first location and the second location;
generating calibration information based on the location difference; and
transmitting the calibration information wirelessly to the second device, wherein the second device calibrates the positioning receiver using the calibration information.
16. The method of claim 15 , wherein the first device is a traffic infrastructure device, and the second device is a vehicle.
17. The method of claim 15 , wherein the first device is a vehicle, and the second device is a traffic infrastructure device.
18. The method of claim 15 , wherein the location difference includes a vector having a distance and a direction between the first location and the second location, and wherein calibrating the positioning receiver is based on the vector.
19. The method of claim 15 , wherein the first location is a location of the first device according to the first device, and wherein the second location is a location of the second device according to the second device.
20. The method of claim 15 , wherein the second location is a location of the second device according to the second device, and wherein the first location is a location of the second device according to the first device.