MOBILE TERMINAL AND OPERATING METHOD THEREOF

• US 20140358426A1
• Filed: 03/13/2014
• Published: 12/04/2014
• Est. Priority Date: 05/30/2013
• Status: Abandoned Application

• Current Assignee: Hyundai Mobis Co., Ltd.
• Original Assignee: Hyundai Mobis Co., Ltd.
• Inventors: KIM, Bum Jo
• Application Number:
  US14/208,253
• Publication Number:
  US 20140358426A1
• Time in Patent Office: Days
• US Class Current: 701/446
• CPC Class Codes: G01S 19/11 wherein the cooperating elements are pseudolites or satellite radio beacon positioning system signal repeaters
• CPC Class Codes: G01S 19/49 whereby the further system is an inertial position system, e.g. loosely-coupled

Abstract

Provided is a mobile terminal. The mobile terminal includes a receiving unit configured to receive GPS information from a GPS satellite, an acquisition unit configured to acquire sensing information from at least one of a speed sensor and a steering sensor of a vehicle connected through an external interface, a determination unit configured to determine whether the vehicle is positioned within at least one of a shadow area and a multi-path area using at least one of the GPS information and the sensing information, and a calculation unit configured to correct a current position coordinate value of the vehicle calculated from the GPS information using the sense information when the vehicle is determined to be positioned within the at least one area.

Claims

1. A mobile terminal comprising:

a receiving unit configured to receive GPS information from a GPS satellite;

an acquisition unit configured to acquire sensing information from at least one of a speed sensor and a steering sensor of a vehicle connected through an external interface;

a determination unit configured to determine whether the vehicle is positioned within at least one of a shadow area and a multi-path area using at least one of the GPS information and the sensing information; and

a calculation unit configured to correct a current position coordinate value of the vehicle calculated from the GPS information using the sense information when the vehicle is determined to be positioned within the at least one area.

2. The mobile terminal of claim 1, wherein the determination unit determines whether the vehicle is positioned within the shadow area using Dilution of Precision (DOP) information included in the GPS information.

3. The mobile terminal of claim 2, wherein the determination unit determines that the vehicle is positioned within the shadow area when Positioning DOP (PDOP) is equal to or greater than a first threshold value and Horizontal DOP (HDOP) is equal to or greater than a second threshold value, the PDOP and the HDOP being included in the DOP information.

4. The mobile terminal of claim 1, wherein the determination unit determines whether the vehicle is positioned within the multi-path area, using an error between positions of the vehicle which are calculated using the GPS information and the sense information, respectively.

5. The mobile terminal of claim 4, wherein the determination unit determines that the vehicle is positioned within the multi-path area when an error between a position of the vehicle calculated using the GPS information and a position of the vehicle calculated using the sensing information is equal to or greater than a certain value for each road grade.

6. The mobile terminal of claims 1, further comprising a matching unit configured to match as a current position of the vehicle the corrected current position coordinate value of the vehicle to map data previously stored in the mobile terminal.

7. A method of correcting, by a mobile terminal, a position error of a vehicle, the method comprising:

receiving GPS information from a GPS satellite;

acquiring sensing information from at least one of a speed sensor and a steering sensor of a vehicle connected through an external interface;

determining whether the vehicle is positioned within at least one of a shadow area and a multi-path area using at least one of the GPS information and the sensing information;

correcting a current position coordinate value of the vehicle calculated from the GPS information using the sense information when the vehicle is determined to be positioned within the at least one area; and

matching as a current position of the vehicle the corrected current position coordinate value of the vehicle to map data previously stored in the mobile terminal.

8. The method of claim 7, wherein the determining comprises determining whether the vehicle is positioned within the shadow area using Dilution of Precision (DOP) information included in the GPS information.

9. The method of claim 8, wherein the determining comprises determining that the vehicle is positioned within the shadow area when Positioning DOP (PDOP) is equal to or greater than a first threshold value and Horizontal DOP (HDOP) is equal to or greater than a second threshold value, the PDOP and the HDOP being included in the DOP information.

10. The method of claim 7, wherein the determining comprises determining whether the vehicle is positioned within the multi-path area, using an error between positions of the vehicle which are calculated using the GPS information and the sense information, respectively.

11. The method of claim 10, wherein the determining comprises determining that the vehicle is positioned within the multi-path area when an error between a position of the vehicle calculated using the GPS information and a position of the vehicle calculated using the sensing information is equal to or greater than a certain value for each road grade.