Measurement Level Integration of GPS and Other Range and Bearing Measurement-Capable Sensors for Ubiquitous Positioning Capability

• US 20100164789A1
• Filed: 10/26/2009
• Published: 07/01/2010
• Est. Priority Date: 12/30/2008
• Status: Abandoned Application

• Current Assignee: GM Global Technology Operations LLC (General Motors Company)
• Original Assignee: GM Global Technology Operations Incorporated (Motors Liquidation Co. GUC Trust)
• Inventors: Basnayake, Chaminda
• Application Number:
  US12/605,569
• Publication Number:
  US 20100164789A1
• Time in Patent Office: Days
• US Class Current: 342/357.270
• CPC Class Codes: G01S 19/43 using carrier phase measurements, e.g. kinematic positioning; using long or short baseline interferometry
• CPC Class Codes: G01S 19/45 by combining measurements of signals from the satellite radio beacon positioning system with a supplementary measurement
• CPC Class Codes: G01S 5/0072 Transmission between mobile stations, e.g. anti-collision systems

Abstract

A system and method are provided for determining a position of a host vehicle using a real time kinematics positioning technique when less than an optimal number of satellites are available for determining the position of the host vehicle. GPS data is retrieved from the host vehicle. GPS data is retrieved from vehicles remote from the host vehicle. Alternative vehicle position related data is retrieved. The position of the host vehicle is determined utilizing the real time kinematics positioning technique as a function of the retrieved GPS data of the host and remote vehicles and the alternative vehicle position data. The position of the host vehicle is utilized in a vehicle application.

Claims

1. A method for determining a position of a host vehicle using a real time kinematics positioning technique when less than an optimal number of satellites are available for determining the position of the host vehicle, the method comprising the steps of:

retrieving GPS data from the host vehicle;

retrieving GPS data from vehicles remote from the host vehicle;

retrieving alternative vehicle position related data;

determining the position of the host vehicle utilizing the real time kinematics positioning technique as a function of the retrieved GPS data of the host and remote vehicles and the alternative vehicle position data; and

utilizing the position of the host vehicle in a vehicle application.

2. The method of claim 1 wherein a mathematical model is generated as a function of the alternative vehicle data, wherein the generated mathematical model is in a form that can be processed in cooperation with the real time kinematics positioning technique.

3. The method of claim 2 wherein a mathematical approach is used to convert the alternative vehicle data into a form that is complementary with the real-time kinematics positioning technique.

4. The method of claim 3 wherein the mathematical approach includes a Least Square mathematical approach.

5. The method of claim 1 wherein the GPS data is obtained from the remote vehicles that are receiving data from satellites in common with the host vehicle.

6. The method of claim 1 wherein the alternative position data is obtained from vehicle-to-vehicle communications between the host vehicle and the remote vehicles.

7. The method of claim 1 wherein the alternative position data is obtained from vehicle-to-infrastructure communications.

8. The method of claim 1 wherein the alternative vehicle data is obtained from in-vehicle object detection sensing devices.

9. The method of claim 1 wherein the alternative vehicle data includes range and bearing data generated by the host vehicle.

10. The method of claim 1 wherein the alternative vehicle data includes range and bearing data generated by the remote vehicles.

11. The method of claim 1 wherein the GPS data of the remote vehicles are provided to the host vehicle via vehicle-to-vehicle communications.

12. The method of claim 1 wherein the GPS data of the remote vehicles are provided to the host vehicle via vehicle-to-infrastructure communications.

13. The method of claim 1 wherein the determined position of the host vehicle is a position relative to the remote vehicles.

14. The method of claim 1 wherein the determined position of the vehicle is an absolute position.

16. The method of claim 14 wherein a mathematical model is generated as function of the alternative vehicle data and is used to convert the alternative vehicle data into a form that is complementary with the real-time kinematics positioning technique.

17. The method of claim 14 wherein the GPS data is obtained from the remote vehicles that are receiving data from satellites in common with the host vehicle.

18. The method of claim 14 wherein the vehicle-to-entity communication system is a vehicle-to-vehicle communication system.

19. The method of claim 14 wherein the vehicle-to-entity communication system is a vehicle-to-infrastructure communication system.

20. The method of claim 14 wherein the alternative vehicle position data includes range and bearing data generated by the host vehicle.

21. The method of claim 14 wherein the alternative vehicle data is generated by at least one remote vehicle and is communicated to the host vehicle.

15. The vehicle positioning system comprising:

a host vehicle global positioning system for determining a global position of a host vehicle;

a vehicle-to-entity communication system for exchanging GPS data and alternative vehicle position data between a host vehicle and remote vehicles; and

a processing unit for storing GPS measurement data from remote vehicles, the GPS measurement data of the remote vehicles and the host vehicle being processed within the processing unit for determining precise positioning of the host vehicle utilizing a real time kinematics positioning technique;

wherein the alternative vehicle position data is processed in cooperation with data output from the real time kinematics positioning technique to compensate for less than an optimum number of satellites required for the real time kinematics position processing technique applied between the host vehicle and the remote vehicles.