For estimating the direction of arrival (DOA)s of non-stationary source signals such as speech and audio, a constrained optimization problem (COP) that exploits the spatial diversity provided by an array of sensors is formulated in terms of a noise-eliminated local th-order cumulant matrix. The COP solution provides a weight vector to the look direction such that it is constrained to the th-ord...

In this paper, we attempt to unify two array processing frameworks viz, Acoustic Vector Sensor (AVS) and level nested enhance the Degrees of Freedom (DoF) significantly beyond limit that is attained by a Uniform Linear Hydrophone Array (ULA) with specified number sensors. The major focus design line architecture which provides high resolution unambiguous bearing estimation increased spatial nul...

A design of sub-Nyquist uniform linear array receiver with different sampling rates is proposed, investigated, and reported in this paper. The proposed architecture increases functionality conventional modest modifications. Simulation results show that the capable determining angle arrival (AOA) signal frequencies multiple continuous-wave/chirp signals over several Nyquist zones.

Indoor access points (APs) with large-scale antenna arrays are commonly deployed in the vicinity of a wall, where wall reflection (WR) affects indoor electromagnetic (EM) wave propagation. In this letter, we investigate effects WR on per-antenna power distribution transmit uniform linear array (ULA) adopting zero-forcing (ZF) precoder. A new channel model is constructed to characterise impact b...

In this paper, we propose a computationally efficient algorithm with improved effective aperture for coherent angle estimation in monostatic multiple-input multiple-output (MIMO) radar. First, the direction matrix of MIMO radar is mapped into low-dimensional virtual uniform linear array (ULA). Then, an augmented data expansion obtained by exploiting Vandermonde-like structure and cross section ...

We address the problem of data independent robust array interpolation over large angular sectors. Previous interpolation methods apply the root-MUSIC principle to interpolation data of a predefined virtual ULA manifold. These methods either suffer from severely biased direction-ofarrival estimates due to interpolation errors or rely on data dependent interpolation matrix design. In this paper a...

Abstract In this paper, we present a low complexity sparse beamspace direction-of-arrival (DOA) estimation method for uniform circular array (UCA). the proposed method, firstly use transformation (BT) to transform signal model of UCA in element-space domain that virtual linear (ULA) domain. Subsequently, by applying vectoring operator on ULA-like model, novel dimension-reduction is derived base...

Polynomial rooting direction finding (DF) algorithms are a computationally efficient alternative to search based DF algorithms and are particularly suitable for uniform linear arrays (ULA) of physically identical elements provided mutual interaction among the array elements can be either neglected or compensated for. A popular algorithm in such situations is Root MUSIC (RM) wherein the estimati...

not more than 200 words) An interesting possibility for improved surveillance capabilities in challenging underwater environments and against targets with low acoustic signatures is the use of multisensor systems combined with dataor information fusion. This work describes how data fusion can be used for tracking and classifying targets using passive underwater acoustic and electric field senso...

Through the more available acoustic information or polarization provided, vector sensor arrays outperform scalar in accuracy of localization. However, cost a array is higher than that array. To reduce two-dimensional (2-D) array, hybrid T-shaped consisting two orthogonal uniform linear (ULAs) proposed, where one ULA composed sensors and other sensors. By utilizing cross-correlation tensor betwe...