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An Improved Excitation Matching Method Based on an Ant Colony Optimization for Suboptimal-Free Clustering in Sum-Difference Compromise Synthesis

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3 Author(s)
Rocca, P. ; Dept. of Inf. & Commun. Technol., Univ. of Trento, Trento, Italy ; Manica, L. ; Massa, A.

Dealing with an excitation matching method, this paper presents a global optimization strategy for the optimal clustering in sum-difference compromise linear arrays. Starting from a combinatorial formulation of the problem at hand, the proposed technique is aimed at determining the subarray configuration expressed as the optimal path inside a directed acyclic graph structure modelling the solution space. Towards this end, an ant colony metaheuristic is used to benefit of its hill-climbing properties in dealing with the non-convexity of the sub-arraying as well as in managing graph searches. A selected set of numerical experiments are reported to assess the efficiency and current limitations of the ant-based strategy also in comparison with previous local combinatorial search methods.

Published in:

Antennas and Propagation, IEEE Transactions on  (Volume:57 ,  Issue: 8 )

Date of Publication:

Aug. 2009

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