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A Simple and Efficient Method for Removing Phase Wrap(PDF)

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

Issue:
1998年04期
Page:
37-40
Research Field:
Publishing date:

Info

Title:
A Simple and Efficient Method for Removing Phase Wrap
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
Keywords:
diff erence conjugate t ime delay cros s-spectrum phase wrap
PACS:
TN911
DOI:
-
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.

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

Memo

Memo:
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Last Update: 2013-03-29