Title :
Nonuniform linear antenna arrays for enhanced near field source localization
Author :
Gazzah, H. ; Delmas, Jean Pierre
Author_Institution :
Dept. of Elec. & Comput. Eng., Univ. of Sharjah, Sharjah, United Arab Emirates
Abstract :
Arrays of sensors freely located along an axis are considered in this paper that are used to localize a near-field emitting source. Using Taylor expansion and a suitable coordinate system, simple, yet rich to interpret, Cramer-Rao bounds relative to the direction and range parameters are derived. Our analysis allows in particular to unveil a family of non-uniform linear arrays with better near field estimation capabilities, compared to the well-established uniform linear arrays.
Keywords :
estimation theory; linear antenna arrays; sensor arrays; Cramer-Rao bounds; Taylor expansion; coordinate system; direction parameters; enhanced near field source localization; near-field emitting source; nonuniform linear antenna arrays; range parameters; sensor arrays; Array signal processing; Direction-of-arrival estimation; Estimation; Linear antenna arrays; Sensor arrays; Cramer-Rao bound; Direction of arrival; antenna arrays; near-field; performance analysis; range;
Conference_Titel :
Acoustics, Speech and Signal Processing (ICASSP), 2014 IEEE International Conference on
Conference_Location :
Florence
DOI :
10.1109/ICASSP.2014.6854000