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| 引用本文： | 曲国庆,党亚民,章传银,苏晓庆.С???????????????????[J].大地测量与地球动力学,2008,28(4):102-106. |
| 作者姓名： | 曲国庆 党亚民 章传银 苏晓庆 |
| 作者单位： | 1. 山东科技大学,青岛,266510;山东理工大学建筑工程学院,淄博,255049 2. 中国测绘科学研究院,北京,100039 3. 山东理工大学建筑工程学院,淄博,255049 |
| 基金项目： | 山东省自然科学基金，中国科学院"百人计划" |
| 摘 要： | ??С?????????е?????????????????????С???????????????????????????????????????????????????????????飬??????????????????????????????????????????ж??????????????,???????????????????????????? |
| 关 键 词： | ??????? С???? ??? ??????? ????? |
ANALYSIS AND IMPROVMENT OF DE-NOISING METHOD FOR WAVELET PACKET |
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| Qu Guoqing,Dang Yamin,Zhang Chuanyin,Su Xiaoqing.ANALYSIS AND IMPROVMENT OF DE-NOISING METHOD FOR WAVELET PACKET[J].Journal of Geodesy and Geodynamics,2008,28(4):102-106. | |
| Authors: | Qu Guoqing Dang Yamin Zhang Chuanyin Su Xiaoqing |
| Institution: | 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 de noising 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 de noising to evaluate the effect of those methods, it is proved that the improved method attains good results and is superior to other methods. |
| Keywords: | distortion signal wavelet packet threshold signal de-noising SNR(signal-noising ratio) |
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