| 小波包分解在迎角传感器信号预处理中的应用 |
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| 引用本文： | 杜文彦.小波包分解在迎角传感器信号预处理中的应用[J].人天科学研究,2009(3). |
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| 作者姓名： | 杜文彦 |
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| 作者单位： | 中北大学信息与通信工程学院 |
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| 摘 要： | 针对基于四象限压力传感器阵列的迎角测量方法中传感器信号受到干扰的问题,讨论了在其预处理中应用小波包变换进行信号分离提取的方法。根据小波包分解理论,对信号进行小波包分解,信号中频率不同的部分落在不同的尺度上,剔除反映干扰的变换尺度,提取出有用信息。结果表明,该方法可很好地提取信号的主要特征信息,也有效地去除了确定性干扰和随机噪声,与传统的信号滤波方法相比较具有明显的优点,同时为后续的信号处理奠定了基础。
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| 关 键 词： | 迎角传感器 小波包分解 信号提取 预处理 |
Application of Wavelet Packet Decomposition in Signal Preprocessing of Angle of Attack Sensor |
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| Abstract: | Aiming at the problem of interference on pressure sensor signal during the method of angle of attack measurement based on four-quadrant pressure sensor,the method of signal separation and extraction based on wavelet packet decomposition in preprocessing is discussed.According to wavelet packet decomposition theory,the signals were decomposed into different scales using the multi-resolving power of the wavelet transform.The signals with different frequencies were showed in different scales.Then useful signal... |
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| Keywords: | Angle of Attack Sensor Wavelet Packet Decomposition Signalextraction Preprocessing |
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