Method for estimating the geographical latitude, longitude and elevation of a mobile electronic telecommunication device (TD)

• US 20130137448A1
• Filed: 11/25/2011
• Published: 05/30/2013
• Est. Priority Date: 11/25/2011
• Status: Active Grant

• Current Assignee: James Shen
• Original Assignee: James Shen
• Inventors: Shen, James
• Granted Patent: US 8,521,184 B2
• Time in Patent Office: Days
• US Class Current: 455/456.1
• CPC Class Codes: G01S 1/08 Systems for determining direction or position line
• CPC Class Codes: H04W 64/006 with additional information processing, e.g. for direction or speed determination

Abstract

A method for estimating the geographical latitude, longitude and elevation of a mobile electronic telecommunication device (TD) is provided. The method draws random information over a given time period from multiple responders. A triangulation and signal quality analysis is performed to determine the possible location of the TD. Using the statistical information and its analysis the location (x, y and z coordinates) as well as the velocity and acceleration of the device is estimated. The present invention provides extremely accurate location information.

Claims

1. A method for estimating the geographical latitude, longitude and elevation of a mobile electronic telecommunication device (TD), the method comprising:

drawing randomly multiple sets of three responses;

performing signal analysis of said responses;

generating from each set of responses a possible location (x, y, and z coordinates) of the TD;

generating a signal quality factor;

estimating a possible location for the mobile device;

generating statistical information from the set of generated possible locations;

selecting the most likely location of the TD based on predetermined statistical parameters;

performing statistical analysis on the collected information to determine whether the TD is stationary or not;

determining the velocity and acceleration if the telecommunication device is not stationary.

2. The method of claim 1 wherein said drawing of responses includes stationary (x, y, and z) coordinates of the responder.

3. The method of claim 1 wherein said drawing of responses include the time of the Ping-Packet Internet Groper—

and that of the response.

4. The method of claim 1 wherein said drawing of responses includes the distance between the TD and the responder based on the round-trip-time of each response (the time between each Ping emitted by the TD, and the time of the response to the Ping).

5. The method of claim 1 wherein said signal analysis includes determining a signal quality factor including information on signal strength, ambient conditions, electronic performance of telecommunication device and other factor affecting the quality of the signal.

6. The method of claim 1 wherein said estimating of the mobile telecommunication device location is based on position coordinates determined using standard triangulation and the corresponding signal quality factor.

7. The method of claim 1 wherein said selecting of the location is based on the mode, mean, and standard deviation of probable device locations.

8. The method of claim 1 wherein said performing statistical analysis includes a regression analysis to determine if the TD is stationary or not.

9. The method of claim 1 wherein said analysis determines the velocity and acceleration of said TD in the case it is not stationary.