CRLB-weighted intersection method for target localization using AOA measurements

Abstract

Two dimensional target localization using AOA measurements is considered in this paper. By conducting repeated experiments, the complex AOA (CAOA) method found that for the two-sensor and single-target scenario, the accuracy of the intersection of two bearing lines can be divided into different layers. However, the experiments are very time consuming. Also, the division of the intersection region of interest into different layers is very subjective. In this paper, by the fusion of AOA measurements from multiple sensors, we propose a CRLB-weighted intersection method (CWIAOA) for target localization problem using AOA measurements. It was found that the new weights built on CRLB are consistent with the results of CAOA method. Numerical examples also demonstrate that the proposed method is not worse than the existing pseudo linear squares (PLS) and sensitivity analysis (SA) methods in all scenarios considered.