On the applicability of the residual weighting algorithm for TDOA

Locating a mobile transmitter passively is a challenging task. Recently, the most preferred method for this matter is the Time Difference of Arrival (TDOA) method. In this paper, different techniques for enhancing the TDOA results are introduced. They generally give an idea about the challenges of TDOA. We analyze different ways of using consecutive measurements as well as redundant sensors. We do that focusing on one specific algorithm using TDOA measurements, the residual weighting algorithm (RWA). Its main advantages lie in the low computational complexity and the fact that it doesn't require additional a priori information. We analyze the performance of the algorithm through simulation of different scenarios and present the most preferable application. We show what kind of additional averaging could be used to enhance the results.