Patent ID: 7626546

Claim:
A method of locating one or more emitters that are emitting multiple sequential radio frequency (RF) signals on a common frequency, said method comprising: providing multiple collection nodes, each of said multiple collection nodes being spaced apart from the other of said multiple collection nodes; collecting said multiple sequential RF signals at each of said multiple collection nodes, each of said sequential emitted RF signals being collected at each of said multiple collection nodes as a cluster of data blocks; determining a first group of multiple geolocation solutions based on a first one of said multiple clusters of data blocks by measuring at least one of time difference of arrival (TDOA) information or frequency difference of arrival (FDOA) information for said multiple sequential RF signals between at least two of said multiple collection nodes; determining a second group of multiple geolocation solutions based on a second one of said multiple clusters of data blocks by measuring at least one of TDOA information or FDOA information for said multiple sequential RF signals between at least two of said multiple collection nodes; determining a first geographic area corresponding to said first one of said multiple cluster of data blocks, said first geographic area including at least a portion of said first group of multiple geolocations, and determining a second geographic area corresponding to said second one of said multiple cluster of data blocks, said second geographic area including at least a portion of said second group of multiple geolocations; and comparing said first determined geographic area with said second determined geographic area to determine whether or not said first determined geographic area correlates to the same emitter geolocation as said second determined geographic area.