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基于迭代NUFFT的不等距阵列天线低副瓣方向图综合 被引量：4

Low Side Lobe Pattern Synthesis of Unequally Spaced Arrays Using Iterative NUFFT Algorithm
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摘要 针对不等间距阵列天线的低副瓣方向图综合问题,提出了一种基于非均匀快速傅立叶变换(NUFFT)的迭代算法。通过严格的数学推导,建立非均匀离散傅立叶变换(NUDFT)与天线阵因子之间的对应关系,利用过采样FFT系数的线性组合来近似表达复指数函数进而实现NUFFT,最后通过插值和反复的迭代有效地抑制了阵列天线的最大副瓣电平。结合等间距阵列和不等间距阵列的算例,对比粒子群算法的优化结果,验证了该算法的有效性和高效性。 The iterative nonuniform fast Fourier transform （NUFFT） algorithm for the low side lobe level pattern synthesis of unequally spaced arrays is presented. Through the strict mathematical derivation, a correspondence relationship between nonuniform discrete Fourier transform （NUDFF） and array factor is established. With the linear combination of over sampling F17F coefficient express complex exponential function approximately, finally it effectively reduces the peak side lobe level of linear array by interpolation and iteration. The effectiveness and efficiency of iterative NUFFT will be demonstrated for equally spaced and unequally spaced arrays, which are compared with PSO algorithm.
作者 郑莲玉 万国宾 蒋里芳
机构地区 西北工业大学电子信息学院
出处 《微波学报》 CSCD 北大核心 2013年第2期17-20,共4页 Journal of Microwaves
基金 航空科学基金(20101853019)
关键词 非均匀快速傅立叶变换(NUFFT) 直线阵 副瓣电平 优化 nonuniform fast Fourier transform（ NUFFT）, linear array, side lobe level, optimization
分类号 TN820.12 [电子电信—信息与通信工程]
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参考文献9

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共引文献37

同被引文献32

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引证文献4

二级引证文献5

微波学报
2013年 第2期

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