[1]刘己斌,赵惠昌,谢武涛.小波去噪在伪码定距中的应用[J].南京理工大学学报(自然科学版),2003,(04):376-380.
　LiuJibin ZhaoHuichang XieWutao.Application of Wavelet Denoising in Distancedetecting with PN Code[J].Journal of Nanjing University of Science and Technology,2003,(04):376-380.
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小波去噪在伪码定距中的应用()
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《南京理工大学学报》（自然科学版）[ISSN:1005-9830/CN:32-1397/N]

卷:
期数:
2003年04期
页码:
376-380
栏目:
出版日期:
2003-08-30

文章信息/Info

Title:
Application of Wavelet Denoising in Distancedetecting with PN Code
作者:
刘己斌; 赵惠昌; 谢武涛
南京理工大学电子工程与光电技术学院, 南京210094
Author(s):
LiuJibin ZhaoHuichang XieWutao
School of Electronic Engineering and Optoelectronic Technology,N UST,Nanjing 210094
关键词:
小波变换;  伪码;  阈值;  信噪比
Keywords:
wavelet transform;  pseudo-noise code;  threshold;  signa-l to-noise ratio
分类号:
TN911
摘要:
在介绍离散小波变换原理的基础上 ,对小波阈值去噪方法在伪码定距系统中的应用进行详细分析。论述了传统滤波方法和小波去噪方法的仿真实现原理。仿真结果表明 ,与传统滤波方法相比 ,小波去噪可以大幅度提高输出信噪比 ,改善相关输出 ,从而提高定距精度。
Abstract:
Based on principle of the discrete wavelet transform is introduced firstly, the application of wavelet de-noising with threshold in the distance-detecting system with pseudo-noise( PN) code is analyzed. Moreover, the simulational principles of the two methods, conventional de-noising method with filter and wavelet de-noising method, are discussed. Simulational results show that , compared with the conventional denoising method, wavelet de-noising can improve the output of SNR and correlation value much more and increase the precision of distance-detect ing.

参考文献/References:

1 崔锦泰. 小波分析导论[M] . 西安: 西安交通大学出版社, 1995. 1~ 108.
2 彭玉华. 小波变换与工程应用[M] . 北京: 科学出版社, 1999. 1~ 137.
3 Mallat S, Hwang L. Singularity detection and processing with wavelets[ J] . IEEE Trans on Information Theory, 1992, 38( 2) : 617~ 643.
4 Donoho D L. De- noising by sof-t thresholding[ J] . IEEE Trans on Information Theory, 1995, 41( 3) : 613~ 627.
5 Abramovich F. Wavelet thresholding via a Bayesian approach[ J] . J R Statistc Soc, 1998, B60: 725~ 749

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备注/Memo

备注/Memo:
国防科技重点预研行业基金资助项目
刘己斌 男 27 岁 博士生
更新日期/Last Update: 2013-03-17