Improved direction finding using a maneuverable array of directional sensors

Houcem Gazzah; Jean Pierre Delmas; Sérgio M. Jesus

ICASSP 2015accepted0 citations

Improved direction finding using a maneuverable array of directional sensors

Houcem Gazzah, Jean Pierre Delmas, Sérgio M. Jesus

Abstract

An antenna array of directional sensors offers more degrees-of-freedom to improve the source localization accuracy. The originally sophisticated expression of the CRB turns into a factorized one at high SNR, perfectly suitable to derive an objective function that depends on the array geometry and the source direction PDF. Analytically untractable, optimization is conducted by systematic search for a two-sensor array. The so-optimized array has a finite accuracy in all directions, contrarily to fixed-geometry linear arrays, and a performance comparable to larger-sized fixed-geometry circular arrays, and so at all SNR levels.

BibTeX

@inproceedings{icassp2015_improveddirectio,
  title = {Improved direction finding using a maneuverable array of directional sensors},
  author = {Houcem Gazzah and Jean Pierre Delmas and Sérgio M. Jesus},
  booktitle = {ICASSP 2015},
  year = {2015}
}