基于改进差分进化算法的时调制线性阵列边带抑制

Weilong Liang, Y. Jiao, Li Zhang
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引用次数: 3

摘要

提出了一种基于改进差分进化(MDE)算法抑制时调制阵列边带辐射的新方法。在改进的差分进化算法中,采用了参数CR的自适应调整策略,提高了种群多样性,避免了局部最优点的重叠。提供了基准函数来验证MDE算法。通过MDE优化静态激励幅值和导通时间序列,可以显著降低时调制线性阵列的边带电平和旁瓣电平。该方法通过一个32元素的线性阵列来说明。
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Sideband suppression in time-modulated linear array by modified differential evolution algorithm
A novel approach based on the modified differential evolution (MDE) algorithm is proposed to suppress the sideband radiation of the time-modulated arrays (TMA). In the modified differential evolution algorithm, an adaptive adjustment strategy of parameter CR is used to improve the population diversity and to avoid frapping in local optima. Benchmark functions have been provided to verify the MDE algorithm. By optimizing the static excitation amplitudes as well as the switch-on time sequences through the MDE, the sideband level and sidelobe level of a time modulated linear array can be reduced significantly. The approach is illustrated through a 32-element linear array.
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