Correction of faulty pattern using cuckoo search algorithm and symmetrical element failure technique along with distance adjustment between the antenna array

摘要

In this work, we propose a cuckoo search algorithm (CSA) based on symmetrical element failure technique along with distance adjustment between the array element for the correction of faulty beams. Our assumption is that, the faulty element location is known. Due to element fails, the whole radiation pattern is disturbed in terms of raise in sidelobe levels and dislocation of nulls from their required positions. In this approach, the CSA is used to find the locations d, of the active elements with minimum sidelobes level and null position in failed array antenna. The meta-heuristic cuckoo search algorithm (CSA) is used for the suppression of sidelobes level and steering of nulls at their required positions. The CSA is based on the normal oblige offspring bloodsucking behavior of the cuckoo species in combination with the Levy flight behavior of some birds. The fitness function is used to minimize the error between the desired and estimated pattern along with null constraints. Simulation results for a Chebyshev pattern of 21 elements have been given to display the validity and performance of the proposed technique.