Patent ID: 8471766
Filing Date: 2013-06-25
Classification: G01S

Abstract:
1. A method of correlating potential transmitters with received radio signals comprising: providing data from an imaging system including data related to paths traveled by potential transmitters; identifying potential transmitters within the data from an imaging system; identifying path segments traveled by the potential transmitters; providing at least a first and second receiver of radio signals; calculating at least one of the following parameters: time difference of arrival, phase difference of arrival and frequency difference of arrival, of radio signals broadcast from the identified path segments to the first and the second receivers; receiving radio signals from potential transmitters at the first and second receivers; measuring at least one of the following parameters: time difference of arrival, phase difference of arrival and frequency difference of arrival, for the received radio signals; comparing the at least one measured parameter with the at least one calculated parameter; and associating received radio signals with identified path segments on the basis of said comparison.