[1]蒋立平,郭延芬.去除相位卷绕的一种简单而有效的方法[J].南京理工大学学报(自然科学版),1998,(04):37-40.
 Jiang Liping Guo Yanfen.A Simple and Efficient Method for Removing Phase Wrap[J].Journal of Nanjing University of Science and Technology,1998,(04):37-40.
点击复制

去除相位卷绕的一种简单而有效的方法()
分享到:

《南京理工大学学报》(自然科学版)[ISSN:1005-9830/CN:32-1397/N]

卷:
期数:
1998年04期
页码:
37-40
栏目:
出版日期:
1998-08-30

文章信息/Info

Title:
A Simple and Efficient Method for Removing Phase Wrap
作者:
蒋立平郭延芬1
( 南京理工大学电子工程与光电技术学院, 南京210094)
( ¹ 东南大学无线电工程系, 南京210018)
Author(s):
Jiang Liping Guo Yanfen ①
School of Electronic Engineering and Optoelectronic Technology,NUST,Nanjing210094
¹ Department o f Radio Engineering , South-East Univer sity, NanJing 210018
关键词:
差分 共轭 时延 互功率谱 相位卷绕
Keywords:
diff erence conjugate t ime delay cros s-spectrum phase wrap
分类号:
TN911
摘要:
相位信息的提取在信号处理中是一个重要方面,然而在相位信息提取中,常存在相位卷绕问题。该文介绍了一种简单而有效的去相位卷绕的方法,该方法采用差分原理,用共轭运算实现。该方法适用于诸如相位法时延估计、信号中瞬时频率的估计等直接应用相位信息的问题中。配合简单的多段平均和稳健处理,就可去除很强的噪声和干扰,在信噪比为0dB甚至更低时也能可靠工作。
Abstract:
T he ext racion of phase inf ormat ion of the s ig nal dist orted by noise is an important aspect of signal process ing. However, the accurat e ex timat ion of the phase is diff icult because of phase w rap. T his paper propose a s imple and ef ficient approach t o remove the phase wr ap. Such approach whose primar y idea is diff erent principle and conjugate operat ions is useful in the time-delay es timat ion using phase informat ion and the trans ient fr equency es t imation of signal .U sing this appr oach, along with multipl e-segment s averag e and robust proces sing, the eff ect of noise and int erference at s ignal-noise rat io 0 db o r low er can be eff iciently mitigat e. Ex periment result s are presented f or the wideband noise model.

参考文献/References:

1 陈永彬. 数字信号处理. 南京: 南京工学院出版社, 1987. 253~275
2 赵真, 侯自强. 广义相位谱延时估计. 声学学报, 1985, 10( 4) : 201~215
3 Cliffo rd G. Coherence and t ime delay est imation. Pro ceeding s of the IEEE, 1987, 75( 2) : 236~253
4 李启虎. 声呐信号处理引论. 北京: 海洋出版社, 1985. 44~82

备注/Memo

备注/Memo:
蒋立平 男 43岁 副教授
更新日期/Last Update: 2013-03-29