Title :
3-D spherical localization of multiple non-Gaussian sources using cumulants
Author :
Challa, Raghu N. ; Shamsunder, Sanyogita
Author_Institution :
Dept. of Electr. Eng., Colorado State Univ., Fort Collins, CO, USA
Abstract :
In this paper an eigendecomposition technique based on cumulant matrices is proposed to passively localize narrowband non-Gaussian sources in spherical coordinates viz., azimuth, elevation, range, using signals recorded by a centro-symmetric cross array. The multiple degrees of freedom available from cumulants are exploited to transform the near-field data into pseudo-data collected by a virtual rectangular array observing virtual far-field sources. The centro-symmetric array structure is preserved in the pseudo-data thus allowing efficient real-valued processing via Unitary ESPRIT
Keywords :
array signal processing; direction-of-arrival estimation; eigenvalues and eigenfunctions; higher order statistics; 3-D spherical localization; Unitary ESPRIT; centro-symmetric cross array; cumulant matrices; eigendecomposition technique; multiple degrees of freedom; multiple non-Gaussian sources; narrowband sources localisation; near-field data; pseudo-data; spherical coordinates; virtual far-field sources; virtual rectangular array; Azimuth; Gaussian noise; Narrowband; Sensor arrays; Yield estimation;
Conference_Titel :
Statistical Signal and Array Processing, 1996. Proceedings., 8th IEEE Signal Processing Workshop on (Cat. No.96TB10004
Conference_Location :
Corfu
Print_ISBN :
0-8186-7576-4
DOI :
10.1109/SSAP.1996.534830