摘要
对染噪信号进行降噪处理是信号处理的重要环节。针对两种经典阈值处理方法的缺陷,引入了一种改进的阈值处理函数。新方法阈值自适应于噪声方差,调整系数自适应于阈值。数值实验表明,该算法对含噪非平稳信号降噪效果明显,适用于遥测非平稳信号的降噪处理。
Noise reduction is an important part of the signal processing. A modified threshold processing function is intro- duced to eliminate the defects of the two classical threshold processing methods. The threshold of this new method is adaptive to noise variance and the adjustment coefficient is adaptive to the threshold. The numerical experiments show that the effect of the method is obvious for reducing the noise of the non-stationary signals with noise, and it is applied to the noise reduction processing of telemetry non-stationary signals.
出处
《现代电子技术》
2013年第15期62-64,共3页
Modern Electronics Technique
关键词
遥测
非平稳信号
阈值函数
降噪
telemetry
non-stationary signal
threshold function
noise reduction
