Kenneth J Good

US Patent:

20130093628, Apr 18, 2013

Filed:

Oct 14, 2011

Appl. No.:

13/273825

Inventors:

Eric B. Jones - Westmont NJ, US
Kenneth R. Good - Odenton MD, US
Kyle J. Roach - Hanover MD, US

Assignee:

LOCKHEED MARTIN CORPORATION - Bethesda MD

International Classification:

G01S 5/02

US Classification:

342451, 342450

Abstract:

A system and method for using a receiving wireless device to passively detect target wireless devices or access points, quantify signal strengths of the target wireless devices or access points, and accurately identify a position for, or geolocate, the target wireless devices or access points. A position of the receiving wireless device is determined and correlated with a signal strength received from a target wireless device taken from multiple positions of the receiving wireless device. A trilateration algorithm is applied to the correlated date to obtain coarse geographic positions for the target wireless device, then a filtering algorithm is applied to obtain an accurate position for the target wireless device, which is in turn displayed to a user of the receiving wireless device.