【摘要】 为了弥补数字滤波器不能滤除遥测信号通带内噪声的不足,提出小波变换与数字滤波联合滤波的方法。重点讨论数字滤波器的选择、小波滤波分解级数的确定和小波消噪中阈值的选择。将该方法应用于遥测信号滤波,取得了较好的效果。更多还原

【Abstract】 The digital filter can’t be used to remove the noise within the passband of the telemtery signal.So,a combined filter based on the Wavelet Transform and digital filtering is proposed to the processing of telemetry signals.The choice of digital filtering,the fix of decomposition level of wavelet,and the determination of the threshold value in the Wavelet noise suppressor are discussed.This method has been used to process telemetry signals,and a satisfactory result has be gotten out.更多还原