Using coprime microphone arrays for direction-of-arrival estimation
Authors
Nichols, John Paul
ORCID
Loading...
Other Contributors
Xiang, Ning
Braasch, Jonas
Markov, Ivan
Braasch, Jonas
Markov, Ivan
Issue Date
2013-08
Keywords
Architectural sciences
Degree
MS
Terms of Use
This electronic version is a licensed copy owned by Rensselaer Polytechnic Institute, Troy, NY. Copyright of original work retained by author.
Full Citation
Abstract
Direction-of-arrival estimation using microphone arrays requires many sensors to reduce beam width in order to achieve precise location estimation in a noisy environment. Coprime linear microphone arrays allow for narrow beams with fewer sensors. Coprime sensing is a type of sparse sensing, meaning that the microphone elements are fewer and more spaced out than in a traditional array without sacrificing resolution, but requiring more post-processing. A coprime microphone array is made up of two overlapping uniform linear arrays with M and N sensors, where M and N are coprime. By applying spatial filtering with both arrays and combining their outputs, M+N sensors can yield MN directional bands. In this work, the coprime array theory is implemented experimentally for the first time with a microphone array to estimate the location of multiple uncorrelated sources in a noisy environment. Both simulated and measured results will be discussed.
Description
August 2013
School of Architecture
School of Architecture
Department
School of Architecture
Publisher
Rensselaer Polytechnic Institute, Troy, NY
Relationships
Rensselaer Theses and Dissertations Online Collection
Access
Restricted to current Rensselaer faculty, staff and students. Access inquiries may be directed to the Rensselaer Libraries.