摘要
将大坝的监测数据序列视为一串不同频率的数字信号,针对信号中的高频噪声,提出采用基于改进阈值提升小波法提取大坝变形效应量。算例表明,与传统小波法相比,改进阈值提升小波法在分离效应分量时更准确、客观,可为分析大坝工作性态提供参考。
The series of dam monitoring data is taken as a string of digital signal with different frequencies.Aiming at the high frequency noise,a new method of lifting wavelet based on improved threshold function is proposed to extract response component of dam deformation observation data.The example shows that the lifting wavelet based on improved threshold function is more accurate and objective in the process of extracting response component compared with traditional wavelet method.So it plays a key role in analysis of the dam work condition.
出处
《水电能源科学》
北大核心
2010年第9期67-69,共3页
Water Resources and Power
基金
国家自然科学基金资助重点项目(50809025,50539010)
国家自然科学基金资助项目(50879024)
