低信噪比时混浊信号降噪的微扰方法  

DISTURBING.METHOD FOR NOISE REDUCTION OF CHAOTIC SIGNAL WITH LOW SIGNAL-TO-NOISE-RATIO

作　　者：李春福[1] 虞厥邦[1] 

机构地区：[1]电子科技大学光电子技术系,成都610054

出　　处：《电子与信息学报》2002年第8期1049-1053,共5页Journal of Electronics & Information Technology

摘　　要：该文提出一种新的混沌信号降噪方法——微扰法,并且给出了微扰法的一个具体实例算法——梯度微扰法。该文还对用梯度微扰法进行混沌信号降噪的效果进行了实验研究。实验结果表明,梯度微扰法能够在低信噪比时得到很好的降噪效果。文中还对梯度微扰法的参数选择问题进行了实验研究。A new disturbing method for noise reduction of chaotic signal is presented, and a realizing example of this method-gradient disturbing method, is proposed. The noise-reduction capability of the gradient disturbing method for chaotic signal is experimentally studied, it is shown that the gradient disturbing method can obtain fairly good noise-reduction result for chaotic signal even if the signal-to-noise-ratio is low. How to choose the parameters used in the gradient disturbing method is also experimentally studied in this paper.

关 键 词：混沌信号 降噪 微扰法 梯度微扰法 微扰序列 

分 类 号：TN911.4[电子电信—通信与信息系统]