Real-time emitter locating system and method

A direction-finding method executed by a portable DF set comprising a receiver and a programmable computing system comprising a processor, an input device, an output device and a storage medium, the method comprising the steps of:

• establishing a cross-over position point representing a position of a transmitter and outputting said point at said output device;
• moving said DF set to a new DF set position;
• receiving at said DF set in said new DF set position, a transmission from said transmitter;
• determining, via said programmable computer, a real-time line of bearing from said DF set to said transmitter responsive to said transmission;
• generating, via said programmable computer, a connecting vector from said real-time line of bearing;
• and
• determining a real-time transmitter position along said connecting vector and outputting said position at said output device.

A real-time direction-finding system, comprising:

• a transmitter transmitting wireless transmissions, said transmitter defining a spacial location;
• a DF set comprising a movable receiver for receiving said transmissions;
• and
• a computing device for determining said special location of said transmitter responsive to transmissions received by said movable receiver and not responsive to other said receivers.