Multiple transmitter localization via interference subtraction

We consider the estimation of the locations of multiple transmitters based on received signal strength measurements at a network of randomly-placed receivers. We develop a simple and computationally efficient interference subtraction method for estimating the locations of multiple emitters that transmit simultaneously in adjacent coverage areas. The method estimates the location of each emitter independently by computing a low-complexity approximation to the maximum likelihood location estimate. Results reveal that, under constraints on computational complexity, the proposed interference subtraction method outperforms competing schemes in multiple transmitter localization.