| 噪声背景下单频信号估计算法的仿真研究 |
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| 引用本文： | 郑丹丹,张涛.噪声背景下单频信号估计算法的仿真研究[J].电子测量技术,2006,29(6):19-20. |
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| 作者姓名： | 郑丹丹 张涛 |
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| 作者单位： | 天津大学,天津,300072 |
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| 摘 要： | 本文针对噪声背景下单频信号难以估计准确的问题,讨论了1种基于FFT的信号频率幅值修正算法,分析了不同窗函数下对信号的估计效果。发现三角窗对幅值修正效果较好,汉宁窗对频率修正效果较好。并且通过仿真验证了此算法不仅可以有效地抑制噪声,还能准确地估计出单频信号的频率和幅值,具有良好的可行性。
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| 关 键 词： | 单频信号 FFT 噪声 窗函数 |
Simulation research on single-frequency signal estimation in noises |
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| Zheng Dandan,Zhang Tao.Simulation research on single-frequency signal estimation in noises[J].Electronic Measurement Technology,2006,29(6):19-20. |
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| Authors: | Zheng Dandan Zhang Tao |
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| Affiliation: | Tianjin University, Tianjin 300072 |
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| Abstract: | This paper presented a frequency and amplitude modification method based on FFT is to estimate single-frequency signal correctly in noises. Different window functions' affection on estimation is analyzed. Amplitude modification using triangle window function is the best and frequency modification using hanning window function is the best. Moreover, this algorithm's practicability is proved by simulation, which can not only be immune to noises but also estimate the signal correctly. |
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| Keywords: | single-frequency signal FFT noises window function |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
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