Paper Info
Title
A passive coupling matrix design for improved resolution small aperture direction finding
Abstract
In this paper, we present an approach to design passive coupling matrix to overcome the performance limitation of direction finding using small aperture array. This approach is inspired by the sound localization acuity of a parasitic fly called Ormia ochracea. Motivated by the requirement from practical implementation that each element of the coupling matrix is realized as a passive analog phase shifter and attenuator in a similar fashion as that of conventional analog beamforming, in the proposed approach we confine the magnitude of each element to being no larger than 1. By taking the advantage of the coupling mechanism, this approach can design compact aperture antenna array yet with much improved direction finding performance. Furthermore, the proposed design is applicable to arbitrary array geometry. Numerical examples illustrate the effectiveness of the proposed approach and show a performance gain of 30 over the uncoupled array of the same aperture of 10 cm diameter at 40 MHz.
Year
DOI
Venue
2011
10.1109/ICASSP.2011.5947010
ICASSP
Keywords
Field
DocType
array signal processing,compact arrays,direction finding,mutual coupling,symmetric matrices,antenna array,phase shifter,apertures,design method,angle of arrival,couplings,sound localization
Direction finding,Aperture,Beamforming,Mathematical optimization,Coupling,Telecommunications,Attenuator (electronics),Computer science,Symmetric matrix,Phase shift module,Acoustics,Antenna aperture
Conference
ISSN
ISBN
Citations 
1520-6149 E-ISBN : 978-1-4577-0537-3
978-1-4577-0537-3
0
PageRank 
References 
Authors
0.34
4
3
Name
Order
Citations
PageRank
Guohua Wang1212.70
Joni Polili Lie2637.43
Chong Meng Samson See317519.41