POSITION ACCURACY TESTING SYSTEM

• US 20130131976A1
• Filed: 11/19/2012
• Published: 05/23/2013
• Est. Priority Date: 11/17/2011
• Status: Active Grant

• Current Assignee: Speedgauge Incorporated (Pelmorex, Inc.)
• Original Assignee: Speedgauge Incorporated (Pelmorex, Inc.)
• Inventors: Hubbard, Jonathan, Kantarjiev, Christopher A.
• Granted Patent: US 9,163,948 B2
• Time in Patent Office: Days
• US Class Current: 701/412
• CPC Class Codes: G01C 21/20 Instruments for performing navigational calculations G01C21/24, G01C21/26 take precedence
• CPC Class Codes: G01C 21/30 Map- or contour-matching
• CPC Class Codes: G01S 19/23 Testing, monitoring, correcting or calibrating of receiver elements

Abstract

Accuracy of a positioning device may be determined without requiring the device to be at any specific location, such as a test location. Instead of comparing the reported location and directional data to a known location and directional data, the present technology may use multiple discrete location and directional reports for comparison with the reported data at multiple locations. The multiple comparisons are used to assess the relative accuracy of the positional telematics system. The reported location may be a GPS location or from another positioning system.

Claims

1. A method for determining accuracy of positional data, comprising:

executing by a processor a data selection module stored in memory to select positional data points retrieved for a vehicle moving on a road to compare to geo-data points for the road;

comparing the positional data points to the geo-data points; and

determining the accuracy of the positional data points based on the comparison.

2. The method of claim 1, wherein comparing includes comparing a positional data point location to a geo-data point location.

3. The method of claim 1, wherein comparing includes comparing a positional data point heading to a geo-data point heading.

4. The method of claim 1, wherein comparing includes comparing a positional data point direction to a geo-data point direction.

5. The method of claim 1, wherein selecting a positional data point includes determining if the position data location is within a threshold of a geo-data point location.

6. The method of claim 1, wherein selecting a positional data point includes determining if the position data heading is within a threshold of a geo-data point heading.

7. The method of claim 1, wherein selecting a positional data point includes determining if the position data speed is within a threshold of a geo-data point speed.

8. The method of claim 1, wherein positional data points include global positioning system (GPS) data.

18. The computer readable storage medium of claim 1, wherein comparing includes comparing a positional data point location to a geo-data point location.

19. The computer readable storage medium of claim 1, wherein comparing includes comparing a positional data point heading to a geo-data point heading.

20. The computer readable storage medium readable storage medium of claim 1, wherein comparing includes comparing a positional data point direction to a geo-data point direction.

9. A system for determining accuracy of positional data, comprising:

a processor;

memory; and

an application stored on the memory and executed by a processor to;

select positional data points retrieved for a vehicle moving on a road to compare to geo-data points for the road,

comparing the positional data points to the geo-data points, and

determining the accuracy of the positional data points based on the comparison.

10. The system of claim 9, wherein comparing includes comparing a positional data point location to a geo-data point location.

11. The system of claim 9, wherein comparing includes comparing a positional data point heading to a geo-data point heading.

12. The system of claim 9, wherein comparing includes comparing a positional data point direction to a geo-data point direction.

13. The system of claim 9, wherein selecting a positional data point includes determining if the position data location is within a threshold of a geo-data point location.

14. The system of claim 9, wherein selecting a positional data point includes determining if the position data heading is within a threshold of a geo-data point heading.

15. The system of claim 9, wherein selecting a positional data point includes determining if the position data speed is within a threshold of a geo-data point speed.

16. The system of claim 9, wherein positional data points include global positioning system (GPS) data.

17. A computer readable storage medium having embodied thereon a program, the program being executable by a processor to perform a method for determining accuracy of positional data, the method comprising:

selecting positional data points retrieved for a vehicle moving on a road to compare to geo-data points for the road;

comparing the positional data points to the geo-data points; and

determining the accuracy of the positional data points based on the comparison.