Broadband DOA estimation using frequency invariant beamforming

被引:83
|
作者
Ward, DB
Ding, Z
Kennedy, RA
机构
[1] Australian Natl Univ, Dept Engn, Canberra, ACT, Australia
[2] Auburn Univ, Dept Elect Engn, Auburn, AL 36849 USA
[3] Australian Natl Univ, Telecommun Engn Grp, Canberra, ACT, Australia
关键词
D O I
10.1109/78.668812
中图分类号
TM [电工技术]; TN [电子技术、通信技术];
学科分类号
0808 ; 0809 ;
摘要
A new method of direction-of-arrival (DOA) estimation for multiple broadband farfield signals is presented. The technique uses a beamspace preprocessing structure based on frequency-invariant beamforming, Specifically, a set of beam-shaping filters focus the received array data in the time domain, thereby avoiding the need for frequency decomposition. Hence, the proposed method is conceptually different from most other broadband DOA estimators, which require frequency decomposition. Numerical results are presented to demonstrate the use of the new method and compare it with conventional coherent signal subspace methods.
引用
收藏
页码:1463 / 1469
页数:7
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