Optimal design of linear array of sensors
ICASSP '91 Proceedings of the Acoustics, Speech, and Signal Processing, 1991. ICASSP-91., 1991 International Conference
Cramer-Rao bounds for antenna array design
IEEE Transactions on Signal Processing
A note on the Cramer-Rao bound for 2-D direction finding based on2-D array
IEEE Transactions on Signal Processing
Threshold region performance of maximum likelihood direction of arrival estimators
IEEE Transactions on Signal Processing
On the geometry of isotropic arrays
IEEE Transactions on Signal Processing
Cramer-Rao bounds on angle estimation with a two-dimensional array
IEEE Transactions on Signal Processing
On the Cramer-Rao Bound for Direction Finding of Correlated Signals
IEEE Transactions on Signal Processing
An algorithm for near-optimal placement of sensor elements
IEEE Transactions on Information Theory
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In this work, a novel method is proposed to optimize the array geometry for DOA estimation. The method is based on minimization of fine error variances with the constraint that the gross error probability is below a certain threshold. For this purpose, a metric function that reflects the gross and fine error characteristics of the array is proposed. Theoretical analyses show that the minimization of this metric function leads to small DOA estimation error variance and small gross error probability. Analyses have been carried out under the assumptions of planar array geometry, isotropic array elements and AWGN. The genetic algorithm is used as an optimization tool and performance simulation is performed by comparing the DOA estimation errors of optimized array to uniform circular arrays (UCAs). Computer simulations support the theoretical analyses and show that the method proposed leads to a significant improvement in array geometry in terms of DOA estimation performance. Finally, the method is applied to an aircraft model and results are presented.