This paper presents an efficient and robust least squares solution which utilizes the measured center points and radius of Apollonius’s circle. And this paper also compares the performance of several RSSD localization algorithm implementations for non-cooperative emitters. Both simulated and measured data are used to compare the localization accuracy and the robustness of these algorithms. Some conclusions have been reached regarding the relative accuracy, robustness and computational cost of these algorithms.

Keywords: localization, received signal strength, local minima