| 引用本文： |
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潘红光,薛纪康,高海南,等.采用FFT-PSO策略的多约束稀疏阵天线方向图综合[J].电讯技术，2017，57（10）： - . [点击复制]
- PAN Hongguang,XUE Jikang,GAO Hainan,et al.Thinned array antenna pattern synthesis with multiple constraints using FFT-PSO strategy[J].，2017，57（10）： - . [点击复制]
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| 摘要: |
| 采用稀疏布阵的相控阵测控天线，阵元等幅激励时的阵列峰值副瓣电平无法满足指标要求。在考虑天线增益、半功率波束宽度等指标约束时设计了合适的适应度函数，并基于粒子群算法(PSO)对阵元激励幅度进行优化以降低天线副瓣电平。同时，分析了等间距栅格平面阵列天线方向图与离散傅里叶变换的关系，采用快速傅里叶变换(FFT) 降低了阵列方向图计算复杂度。仿真结果表明，该方法可有效降低峰值副瓣电平和计算复杂度。 |
| 关键词: 航天测控；相控阵天线；稀疏平面阵列 粒子群优化；方向图综合 |
| DOI：10.3969/j.issn.1001-893x.2017.10.006 |
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| 基金项目:国家自然科学基金资助项目(61603295)；陕西省科技厅工业科技公关项目(2016GY-040,2105GY020) |
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| Thinned array antenna pattern synthesis with multiple constraints using FFT-PSO strategy |
| PAN Hongguang,XUE Jikang,GAO Hainan,JIANG Nengqian |
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| Abstract: |
| For the thinned array antenna,the peak sidelobe level (PSLL) of the array with equal amplitude excitation can not meet the requirements of the designed performances. Considering the constraints of antenna gain and the half-power beamwidth,the appropriate fitness function is designed,and the excitation amplitude of the element based on particle swarm optimization (PSO) is optimized to reduce the antenna sidelobe level.Meanwhile,the relationship between the pattern of planar phased array with rectangular grid and the discrete Fourier transform (DFT) is analyzed,then the fast Fourier transform (FFT) is used to reduce the computational complexity. The simulation results show that the proposed approach can effectively reduce the maximum PSLL and the computational complexity. |
| Key words: space TT&C;phased array antenna thinned planar array particle swarm optimization pattern synthesis |
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