Computationally fast AOA estimation using sparse large aperture arrays for electronic surveillance

Abstract

Angle-of-arrival (AOA) estimation algorithms for electronic surveillance systems are often required to be accurate, computationally fast and implemented using sparse large aperture arrays. This paper considers the speed and accuracy of the SODA and SBI interferometers [1, 2] in the context of sparse large aperture arrays and compares their performance to the conventional phaseshift beamformer and MUSIC algorithm. The performance of the algorithms will be compared through simulation and verified using experimental data.