Two-dimensional frequency estimation using a modified version of the two-stage separated virtual steering vector-based algorithm

Abstract

In this paper, we have proposed a modified version of the two-stage separated virtual steering vector-based algorithm. Our proposed algorithm has solved the problem encountered in the two-stage separated virtual steering vector-based algorithm (SVSV) without significant increase in the computational load. SVSV could not resolve the multiple two-dimensional (2D) frequency components having equivalent f <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">i2</sub> - f <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">i1</sub> , (i = 1,2,...,I <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">w</sub> ). Computer simulations are given to demonstrate the effectiveness of the proposed algorithm over SVSV algorithm. Noise performance of the modified SVSV is also analyzed through Monte Carlos simulations.