Accurate detection and estimation of radio signals using a 2D novel smart antenna array

This paper investigates the problem of Direction of Arrival (DOA) estimation using a 2D novel smart antenna array configuration that was recently presented by the authors in [1]. The proposed 2D novel configuration overcomes the drawback of uniform linear array (ULA) which cannot detect signals arriving at grazing incidence. The proposed 2D novel array configuration is able to resolve signals arriving from narrowband plane wave sources close to the array endfire. The proposed array configuration comprises of doubly crossed uniform linear arrays (ULAs) so that the size and computational load of the proposed array is identical to that of a 2N-element conventional ULA. MUltiple SIgnal Classification (MUSIC) is used as a tool of radio signal detection and estimation. A comparative study between ULA and the proposed 2D novel array is carried out in terms of effect of SNR (signal to noise ratio), number of scatterers, and number of snapshots.