Direction of Arrival Estimation Based on a Mixed Signal Transmission Model Employing a Linear Tripole Array

Direction of arrival (DOA) estimation is an important topic in array signal processing. Currently, most research activities are focused on the single transmission (SST) type signals, i.e. only one physical used to carry information from a transmitter receiver with given polarisation setting. However, make full use degrees freedom spatial domain, signals based dual (DST) model more and widely used, i.e., two different polarisations carrying employed for communication between receiver. But there rarely any work DOA DST signals. Motivated by such problem, paper proposes methods mixed (MST) model, mixture SST The first method provides two-step solution estimate then second. second estimates all step. Moreover, CRB (Cramér-Rao Bound) derived evaluate performance proposed methods.