基于小波分析的迎角传感器信号预处理

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变换进行信号分离提取的方法.根据小波分解理论,对信号进行多尺度的小波变换,信号中频率不同的部分落在不同的尺度上,剔除反映干扰的小波变换尺度,提取出有用信息.结果表明,该方法可较好地提取信号的主要特征信息,有效的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.

Signal Preprocessing of Angle of Attack Sensor Based on Wavelet Analysis

Given the problem of interference of the pressure sensor signal in the method of angle of attack measurement based on the four-quadrant pressure sensor,the method of signal separation and extraction based on wavelet transformation in preprocessing is discussed.According to the wavelet decomposition theory,the signals are decomposed into different scales using the multi-resolving power of the wavelet transform.The signals with different frequencies are shown in different scales.Then useful signals can be ext...