Position accuracy testing system

• US 9,163,948 B2
• Filed: 11/19/2012
• Issued: 10/20/2015
• 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.
• Primary Examiner(s): Cheung, Calvin
• Assistant Examiner(s): MARTINEZ BORRERO, LUIS A
• Application Number:
  US13/681,083
• Publication Number:
  US 20130131976A1
• Time in Patent Office: 1,065 Days
• Field of Search: 701/412, 701/2, 701/1, 701/3, 701/475, 701/428, 701/433, 701/25, 701/408, 701/490, 701/530, 382/103, 382/169
• US Class Current: 1/1
• 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:

receiving positional data from a positional device associated with a vehicle, wherein the vehicle is traversing a roadway as the positional device generates the positional data;

storing the received positional data in a memory of a computing device;

selecting positional data points from the received positional data;

comparing the selected positional data points to geo-data points for the roadway over which the vehicle was traversing during generation of the positional data by the positional device associated with the vehicle;

determining an accuracy of the positional data points based on the comparison against the geo-data points; and

generating a report including the determined accuracy.

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 that 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 that 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 that 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 obtained by the positional device.

9. A system for determining accuracy of positional data by a computing device, the system comprising:

a processor of the computing device;

a memory coupled to the processor; and

an application stored in the memory, wherein execution of the application by the processor;

receives positional data from a positional device associated with a vehicle, wherein the vehicle is traversing a roadway as the positional device generates the positional data,

stores the received positional data in the memory of the computing device;

selects positional data points from the received positional data,

compares the positional data points to geo-data points for the roadway over which the vehicle was traversing during generation of the positional data by the positional device associated with the vehicle,

determines an accuracy of the positional data points based on the comparison against the geo-data points, and

generates a report including the determined accuracy.

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 that 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 that 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 that 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 obtained by the positional device.

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

receiving positional data from a positional device associated with a vehicle, wherein the vehicle is traversing a roadway as the positional device generates the positional data;

storing the received positional data in a memory of the computing device;

selecting positional data points from the received positional data;

comparing the selected positional data points to geo-data points for the roadway over which the vehicle was traversing during generation of the positional data by the positional device associated with the vehicle;

determining the accuracy of the positional data points based on the comparison against the geo-data points; and

generating a report including the determined accuracy.

18. The non-transitory computer readable storage medium of claim 17, wherein comparing includes comparing a positional data point location to a geo-data point location.

19. The non-transitory computer readable storage medium of claim 17, wherein comparing includes comparing a positional data point heading to a geo-data point heading.

20. The non-transitory computer readable storage medium readable storage medium of claim 17, wherein comparing includes comparing a positional data point direction to a geo-data point direction.