A passive coupling matrix design for improved resolution small aperture direction finding

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

• Type: Journal
• Year: 2011
• Where: ICASSP
• Authors: Guohua Wang, Joni Polili Lie, Chong Meng Samson See
• Keywords: Coupling Matrix, ICASSP 2011, Passive Analog Phase, Passive Coupling Matrix, Signal Processing