ANALYSIS AND IMPROVMENT OF DE-NOISING METHOD FOR WAVELET PACKET
Qu Guoqing 1,2) ;Dang Yamin 3) ;Zhang Chuanyin 3) ; and Su Xiaoqing 2)
1)Shangdong University of Science and Technology, Qingdao 2665102)Shandong University of Technology, Zibo 255049 3)Chinese Academy of Surveying and Mapping, Beijing 100039
Abstract Wavelet packet analysis is a precise analysis method. There are two key points—choosing threshold and quantitating threshold of wavelet packet coefficients—in wavelet packet denoising method. In this paper, the two points in different methods are analyzed and compared, and the choosing threshold method is improved. Through simulative test, comparing SNR and MSE of original signal and that of signal after denoising to evaluate the effect of those methods, it is proved that the improved method attains good results and is superior to other methods.
Key words ：
distortion signal
wavelet packet
threshold
signal denoising
SNR(signalnoising ratio)
Received: 01 January 1900
Corresponding Authors:
Qu Guoqing
Cite this article:
Qu Guoqing,Dang Yamin ,Zhang Chuanyin et al. ANALYSIS AND IMPROVMENT OF DE-NOISING METHOD FOR WAVELET PACKET[J]. , 2008, 28(4): 102-106.
Qu Guoqing,Dang Yamin ,Zhang Chuanyin et al. ANALYSIS AND IMPROVMENT OF DE-NOISING METHOD FOR WAVELET PACKET[J]. jgg, 2008, 28(4): 102-106.
URL:
http://www.jgg09.com/EN/ OR http://www.jgg09.com/EN/Y2008/V28/I4/102
[1]
WANG Xiaolei,NIU Zijin,HE Xiufeng. Precipitation Analysis and Judgment Based on GPS Water Vapor Retrieval and GPS-IR
[2]
ZHOU Yunyao,WANG Haibin,XIANG Ya,Lü Yongqing,QI Junwei,WU Huan,HE Bin. Application of Lifting Wavelet with Improved Threshold Function in Artificial Seismic Source
[3]
WANG Wei，SHEN Yunzhong，WANG Fengwei. Analysis on the Terrestrial Water Storage Changes in the Congo River Basin from 2002 to 2020
[4]
WANG Haibin, ZHOU Yunyao, Lü Yongqing, XIANG Ya. Application and Discussion on Wavelet Threshold Method in Seismic Data Recorded by JCZ Series Ultra-Wideband Seismographs
[5]
LU Tieding, XIE Jianxiong. EEMD-Multiscale Permutation Entropy Noise Reduction Method for GPS Elevation Time Series
[6]
PEI Yuekun,HAN Xinxin. Overview of GNSS-R Technique for Soil Moisture Detection
[7]
WANG Shitai,ZHANG Boyu,YIN Min. Research on Shadow Matching Algorithm for GNSS Positioning of Mobile Terminal Based on Dynamic Threshold
[8]
HU Rui，WU Fei，TONG Yanhui，ZHU Hai，YAN Song，LU Wenxia. Improved Trajectory Tracking Algorithm Based on Pedestrian Dead Reckoning
[9]
.
[10]
WANG Jie，HE Xiufeng，WANG Xiaolei，SONG Minfeng. Comparative Analysis of Dynamic Correction Method in Tidal Monitoring by GNSS-IR
[11]
YE Zhicheng,LIANG Yabin,FENG Qian. Research on Simulation Method of Piezoelectric Active Sensing Identification of Concrete Cracks
[12]
. Wavelet Transform and Interference Elimination of Fixed-Point Deformation
Pressure Interference of Kuancheng Station
[13]
HUANG Zhengkai, WANG Haihong. Preliminary Research on Monitoring Land Subsidence Using the Satellite Altimetry Technology
[14]
Lü Zheng,FENG Wei,HUANG Dingfa. Using GNSS Signal-to-Noise Ratio to Measure Dam Water Level Changes
[15]
REN Chao,ZHANG Zhigang,LIANG Yueji,PAN Yalong,HUANG Yibang. Study on Inversion of Soil Moisture Using Wavelet Analysis Assisted GPS-IR
