摘要
介绍了自适应小波包算法的基本理论和具体实现步骤,并且针对信号的时变特性采取了改进的双树算法实现了每一时间段内的小波包基的最优化选择,使得降噪处理具有自适应性。通过数值模拟对自适应算法和传统算法进行了比较。实验结果表明自适应小波包算法降噪法有着更好的性能,能够有效地抑制信号中的噪声。
The basic theory of wavelet package and the specific steps was introduced.Aiming at the time-changing character of signal,the improved double trees algorithm was applied to choose the optimum wavelet package in order to reduce noise with adaptive character.The result of adaptive algorithm was compared with the result of tradition algorithm through numerical simulation.And the result showed that the adaptive algorithm can restrain the noise better.
出处
《舰船电子工程》
2012年第10期52-53,80,共3页
Ship Electronic Engineering
关键词
激光通信
小波包
自适应
降噪
laser communication
wavelet package
adaptive
reduce noise
