A Novel Method for Estimation of More DOA with Less Antennas

Abstract

In this paper, we propose a new method to estimate more directions of arrival (DOA) while having fewer antennas in the array. Indeed, we decompose the original array into two subarrays. Next, we make a Hadamard product between both steering vectors of subarrays to get the Hadamard steering vector. The lasts elements of the Hadamard steering vector are vertically concatenate with original steering vector. After that we apply MUltiple SIgnal Classification (MUSIC) algorithm for estimation of DOA of source signals. We used MatLab software to make the simulations and we get very good results.