Patent Document ID: 6084547
Application ID: 09276729
Patent Flag: 1

Claim One:
1. A method for determining a location of an unknown position radio transmitter under low signal-to-noise ratio conditions, comprising the steps of: receiving a first radio signal, including a unit identification, at a first transmission time from an unknown position radio transmitter at a first of n radio receivers, where n&gt;2; determining, at said first radio receiver or at a central processing device (CPD), a time of a next unknown position radio transmission; sending the time of the next radio transmission from the first radio receiver to the other n-1 radio receivers or sending the time of the next radio transmission from the CPD to the n radio receivers; receiving, with a signal enhancing mode, radio signals from said unknown position radio transmitter at the n radio receivers at the time of the next unknown position radio transmission; and determining a location of said unknown position radio transmitter using said enhanced radio signals.