摘要
本文阐述了小波分析理论的基本原理 ,针对一种特殊含噪状态下的GPS单历元变形信号 ,提出了分尺度、分阶段多阈值GPS单历元变形信号的小波降噪方法 ,并与通常基于阈值的小波降噪方法对比 ,通过残差的直方图统计 ,直观说明了本文方法能在有效降噪的前提下 ,保留更多的变形信号。
In this paper,the principle of wavelet analysis theory is proposed.And a dividing stage GPS single epoch deformation signal de-noising method is presented based on multi-resolution probing to special noise embedded GPS single epoch deformation signal.In comparison with the conventional wavelet threshold value noise reduction method,the histogram of the residuals shows that this method can keep more deformation information.
出处
《工程勘察》
CSCD
北大核心
2004年第3期51-53,共3页
Geotechnical Investigation & Surveying
