DOA Estimation and Beamforming Using Spatially Under-Sampled AVS Arrays

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DOA Estimation and Beamforming Using Spatially Under-Sampled AVS Arrays

Conference Paper (2017)

Author(s)

K. Nambur Ramamohan (TU Delft - Electrical Engineering, Mathematics and Computer Science, Microflown Technologies)

M.A. Coutiño Minguez (TU Delft - Electrical Engineering, Mathematics and Computer Science)

S.P. Chepuri (TU Delft - Electrical Engineering, Mathematics and Computer Science)

D. Fernandez Comesana (Microflown Technologies)

G. Leus (TU Delft - Electrical Engineering, Mathematics and Computer Science)

Research Group

Signal Processing Systems

Spatial under-sampling Acoustic vector sensor (AVS) Cramér-Rao lower bound (CRLB direction-of-arrival (DOA) Far-field narrow-band acoustic sources

DOI related publication

https://doi.org/10.1109/CAMSAP.2017.8313203 Final published version

To reference this document use

https://resolver.tudelft.nl/uuid:38846597-8b7c-4f66-9c57-b9504d181966

More Info

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Publication Year

2017

Language

English

Research Group

Signal Processing Systems

Pages (from-to)

1-5

ISBN (print)

978-1-5386-1252-1

ISBN (electronic)

978-1-5386-1251-4

Event

2017 IEEE 7th International Workshop on Computational Advances in Multi-Sensor Adaptive Processing (2017-12-10 - 2017-12-13), Willemstad, Curaçao

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206

Abstract

In this paper, we show the advantages of spatially under-sampled acoustic vector sensor (AVS) arrays over conventional acoustic pressure sensor (APS) arrays for performing direction-of-arrival (DOA) estimation and interference cancellation. We provide insights into the theoretical performance of an under-sampled AVS array with respect to its DOA estimation performance using the Cramér-Rao lower bound (CRLB). We also show that the minimum variance distortionless response (MVDR) beamformer suppresses the grating lobes considerably as compared to the classical (or Bartlett) beamformer leading to unambiguous DOA estimates. Finally, through zero-forcing (ZF) and minimization of maximum side lobe beamformers, the advantages of an under-sampled AVS array for interference cancellation are presented.