The Community for Technology Leaders
Proceedings of 1994 28th Asilomar Conference on Signals, Systems and Computers (1994)
Pacific Grove, CA, USA
Oct. 31, 1994 to Nov. 2, 1994
ISSN: 1058-6393
ISBN: 0-8186-6405-3
pp: 785-789
J.A. Gansman , Sch. of Electr. Eng., Purdue Univ., West Lafayette, IN, USA
M.D. Zoltowski , Sch. of Electr. Eng., Purdue Univ., West Lafayette, IN, USA
J.V. Krogmeier , Sch. of Electr. Eng., Purdue Univ., West Lafayette, IN, USA
ABSTRACT
Zoltowski and Kautz (see IEEE Tran. on Signal Processing, May 1994 and IEEE Signal Processing Letters, Jan. 1994) developed a beamspace domain based 1D angle estimation scheme for uniform linear arrays that allows one to solve for the arrival angles of plane waves via the roots of a small order polynomial and works with any type of front end beamformer. This paper extends their approach to the more general case of 2D angle estimation with a uniform rectangular array (URA) of sensors. The approach is based on the fact that the telescoped beamspace noise eigenvectors exhibit a bandpass characteristic. Therefore, multidimensional multirate processing can be performed to ultimately yield a small dimensional signal subspace. A novel version of ESPRIT can then be applied to effect closed-form 2D angle estimation and automatically couple the two components of the source directions. Simulations demonstrating the efficacy of the approach are presented.<>
INDEX TERMS
direction-of-arrival estimation, eigenvalues and eigenfunctions, polynomials
CITATION

J. Gansman, M. Zoltowski and J. Krogmeier, "2-D angle estimation in beamspace featuring multidimensional multirate eigenvector processing," Proceedings of 1994 28th Asilomar Conference on Signals, Systems and Computers(ACSSC), Pacific Grove, CA, USA, 1995, pp. 785-789.
doi:10.1109/ACSSC.1994.471569
91 ms
(Ver 3.3 (11022016))