改进的Garrote阈值法去噪的研究  

Research on improved Garrote threshold de-noising method

作　　者：沙磊[1] 任超[1] 

机构地区：[1]桂林理工大学土木与建筑工程学院,广西桂林541004

出　　处：《工程勘察》2010年第7期57-60,共4页Geotechnical Investigation & Surveying

基　　金：广西自然科学基金资助项目(编号:桂科自0640178);广西科学基金资助项目(编号:桂科基0991023)

摘　　要：在固定阈值方法的基础上,提出改进的固定阈值算法,进而给出改进的Garrote阈值法。理论分析、仿真实验以及工程实例的结果表明,改进的Garrote阈值法无论在去噪效果上,还是在信噪比和均方根误差意义上均优越于软、硬阈值法以及Garrote阈值法。On the base of the fixed threshold method,an improved fixed threshold algorithm is presented,which furthermore proposes an improved Garrote threshold method.The results of theoretical analysis,simulation and engineering projects show that the improved Garrote threshold method is much better than the soft,hard and Garrote threshold method in terms of the de-noising effect,the SNR and the RMSE sense.

关 键 词：阈值函数 阈值 均方根误差 

分 类 号：P228.4[天文地球—大地测量学与测量工程]