Patent ID: 9535155
Date: 2017-01-03
CPC Classifications: G01S,H04K,H04L,H04W

Claim:
1. A wireless-signal source locator system comprising: wireless sensor devices distributed at distinct locations over a geographic region and configured to passively monitor wireless communication network signals in the geographic region, each wireless sensor device configured to: a data analysis system configured to receive the arrival-time data and to identify a location of the mobile device based on solving a system of equations using the arrival-time data generated by three or more of the wireless sensor devices, the system of equations comprising n equations: where {right arrow over (r s )}=(x s ,y s ,z s ) represents the location of the mobile device, {right arrow over (r b )}=(x b ,y b ,z b ) represents a location of the base station, {right arrow over (r i )}=(x i ,y i ,z i ) represents a location of the i-th wireless sensor device, c represents the speed of light, and δτ i represents a time-difference generated by the i-th wireless sensor device.