This paper discusses estimation of two-dimensional (2D) direction of arrival
(DOA) for a planar array, and derives a reduced-dimension Capon (RD-Capon) algorithm.
The first parameter is obtained by searching the spectrum peak of transformation of the
covariance matrix, obtained from the received signal. The second parameter is estimated
using least squares. The algorithm uses one-dimensional global search to achieve a joint estimation
of 2D DOA. This algorithm based on one-dimension local searches can avoid high
computational cost within 2D-Capon algorithm by spectrum peak search, with the performance
close to the 2D-Capon algorithm. The proposed algorithm can obtain automaticallypaired
2D DOA estimation for planar array. It works well for the sources with the same
azimuth (or elevation). Simulation results verify the usefulness of the algorithm.
JIANG Chi|ZHANG Xiao-fei|ZHANG Li-cen
. Two-Dimensional DOA Estimation for Planar Array via Reduced-Dimension Capon[J]. Journal of Applied Sciences, 2015
, 33(2)
: 167
-177
.
DOI: 10.3969/j.issn.0255-8297.2015.02.006
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