Antenna Array based Framework for Detection and Localization of Correlated Signals

Abstract

The number of signal components received at a sensor array as well as their angle of arrival can be estimated by array signal processing techniques. However, in multipath environments, several versions of a signal transmitted from the same source are highly correlated and consequently eigenvalue-based direction of arrival (DoA) estimation approaches are no more valid. This paper proposes to extend a previous framework with multipath mitigation for detecting and locating signal emitters in two aspects: (i) by considering the case of detection and localization of multiple emitters, and (ii) by including a decorrelation technique of the multipath components emitted from the same source. Simulation results show that the proposed framework is much more efficient than the previous one, presenting lower average localization errors and average angle of arrival errors when correlated signals are present.