New simple implementation of the coherent signal subspace method for wide band direction of arrival estimation

Abstract

The authors address the problem of source localization estimation (SLE), given the output of a sensor array, in the case of aerial acoustics in an indoor environment. The presence of echos similar to highly correlated sources necessitates the study of high-resolution methods in the case of wideband emitters. As the field of possible applications includes robotics, the authors do not assume any a priori knowledge about the source locations. Extending the coherent signal subspace (CSS) approach, first introduced by H. Wang and M. Kaveh (1983), the authors propose a method that only uses simple interpolation of array data in order to build the CSS directly.< <ETX xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">&gt;</ETX>