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Journal of Projectiles, Rockets, Missiles and Guidance >

2026 , Vol. 46 >Issue 2: 145 - 151

DOI: https://doi.org/10.15892/j.cnki.djzdxb.2026.02.003

Academic article

An Asymmetric Sidelobe Optimization Approach with Phase-only Weighting

  • ZHANG Wentao 1, 2 ,
  • GOU Weilei , 1, 2, *
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  • 1 China Airborne Missile Academy, Luoyang 471009,Henan, China
  • 2 National Key Laboratory of Air-based Information Perception and Fusion, Luoyang 471009,Henan, China

Received date: 2026-01-13

  Online published: 2026-05-09

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Abstract

A low-sidelobe array pattern design method utilizing fmincon is proposed based on MATLAB.The array beam optimization problem is transformed into a nonlinear constrained optimization problem with continuous variables by constructing a hybrid penalty cost function with the objective of minimizing the sidelobe level in the target region and utilizing the nonlinear constraints for controlling the gain fluctuation of mainlobe.Numerical results demonstrate that The designed array can achieve a suppression of 15-20dB sidelobe level within specified spatial regions while ensuring that the gain fluctuation of mainlobe is less than 0.3dB.And the optimization process exhibits rapid convergence and excellent stability.The proposed method gives consideration to optimization precision and computational efficiency.It provides a high-performance and high-reliability solution for antenna array designs requiring the mainlobe shaping and sidelobe suppression in specific region,has significant engineering practical value.

Key words： radiation pattern synthesis; asymmetric sidelobe; phase-only weighting; fmincon; constrained optimization

Cite this article

ZHANG Wentao , GOU Weilei . An Asymmetric Sidelobe Optimization Approach with Phase-only Weighting[J]. Journal of Projectiles, Rockets, Missiles and Guidance, 2026 , 46(2) : 145 -151 . DOI: 10.15892/j.cnki.djzdxb.2026.02.003

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