Patent ID: 8878725

Claim:
A system for locating an emitter within an area comprising: a receiver to receive signals transmitted by said emitter at a plurality of different locations within said area; a sampling module to digitize said received signals to produce digital signals; a memory to store said digital signals; a processor to process said digital signals to locate said emitter within said area, wherein said processor includes: a blind source separation module to separate said digital signals into narrowband and broadband components; an energy-based geolocation module to process said narrowband components and determine a first three-dimensional location of said emitter within said area based on energy measures of said narrowband components, wherein said energy measures are proportional to distances between said emitter and each of said plurality of locations; a time difference of arrival based geolocation module to process said broadband components and determine a second three-dimensional location of said emitter within said area based on time differences of reception times of said received signals at each of said plurality of locations, wherein said time differences are proportional to range differences between said plurality of locations and said emitter; and a combiner module to combine said first three-dimensional location with said second three-dimensional location to determine a combined three-dimensional location of said emitter within said area.