基于ZoomFFT和多谱线插值算法的谐波分析方法*
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朱坤, 陈乐柱, 许胜, 史琛筠
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Harmonic Analysis Method Based on ZoomFFT and Multispectral Interpolation Algorithm
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ZHU Kun, CHEN Lezhu, XU Sheng, SHI Chenjun
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表1 部分窗函数特性
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| 窗的类型 | 主瓣宽度 | 旁瓣电平/dB | 旁瓣衰减速率/
(dB/oct) | | Triangle | 8π/N | -27 | 12 | | Rectangle | 4π/N | -13 | 6 | | Hamming | 8π/N | -43 | 6 | | Blackman | 12π/N | -58 | 18 | | Blackman-Harris | 16π/N | -92 | 6 | | Hanning | 8π/N | -32 | 18 | | 4项1阶Nuttall | 16π/N | -93 | 18 | | 4项3阶Nuttall | 16π/N | -83 | 30 |
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