Share Email Print
cover

Proceedings Paper

Multiple-input multiple-output (MIMO) analog-to-feature converter chipsets for sub-wavelength acoustic source localization and bearing estimation
Format Member Price Non-Member Price
PDF $14.40 $18.00

Paper Abstract

Localization of acoustic sources using miniature microphone arrays poses a significant challenge due to fundamental limitations imposed by the physics of sound propagation. With sub-wavelength distances between the microphones, resolving acute localization cues become difficult due to precision artifacts. In this work, we present the design of a miniature, microphone array sensor based on a patented Multiple-input Multiple-output (MIMO) analog-to-feature converter (AFC) chip-sets which overcomes the limitations due to precision artifacts. Measured results from fabricated prototypes demonstrate a bearing range of 0 degrees to 90 degrees with a resolution less than 2 degrees. The power dissipation of the MIMO-ADC chip-set for this task was measured to be less than 75 microwatts making it ideal for portable, battery powered sniper and gunshot detection applications.

Paper Details

Date Published: 5 May 2010
PDF: 8 pages
Proc. SPIE 7666, Sensors, and Command, Control, Communications, and Intelligence (C3I) Technologies for Homeland Security and Homeland Defense IX, 766628 (5 May 2010); doi: 10.1117/12.852671
Show Author Affiliations
Shantanu Chakrabartty, Michigan State Univ. (United States)


Published in SPIE Proceedings Vol. 7666:
Sensors, and Command, Control, Communications, and Intelligence (C3I) Technologies for Homeland Security and Homeland Defense IX
Edward M. Carapezza, Editor(s)

© SPIE. Terms of Use
Back to Top