Failed Elements Correction Method Based on Modified Invasive Weed Optimization Algorithm
The array antenna comprises multiple radiating elements.Element failures distort the far-field radiation pattern,affecting antenna system operation.Thus,optimization algorithms are crucial for mitigating distortion and restoring characteristics.This paper introduces the Adaptive Invasive Weed Optimization(AIWO)algorithm for ra-dar antenna element failure correction.The adaptive standard deviation decreases with iterations,balancing global exploration and local exploitation.Chaotic sequences enhance the local anti-stalling ability of optimal weeds,im-proving optimization accuracy.Our algorithm incorporates common excitation constraints in the pattern synthesis ob-jective function,enhancing system stability and reducing maintenance costs.Compared to existing algorithms,un-der demanding array configurations,our method increases the common excitation proportion from 0 to 17.4％,with radiation characteristics meeting requirements,proving its outstanding element failure correction performance.
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