A new method of Nonlinear Least Squares phase unwrapping

Author

Xiao-qing Zhang ; Yong-guo Zheng ; Zhong-long Wang

Author_Institution

Coll. of Inf. Sci. & Eng., Shandong Univ. of Sci. & Technol., Qingdao, China

Volume

01

fYear

2013

fDate

16-18 Aug. 2013

Firstpage

720

Lastpage

723

Abstract

The linear Weighted Least Squares (WLS) phase unwrapping method, solving the problem in slow convergence rate by iteration method, usually could not easily to get the exact solution. This paper proposes a model of Nonlinear Least Squares (NLS) unwrapping method, which works it out based on the homotopy method. When compared with the classic linear LS phase unwrapping method in real data conditions, this approach verified effective, especially in the noise disturbance areas, which can improve the accuracy of the phase unwrapping.

Keywords

iterative methods; least squares approximations; signal processing; WLS phase unwrapping method; homotopy method; iteration method; linear weighted least square phase unwrapping method; nonlinear least square phase unwrapping; signal processing; Educational institutions; Equations; Interference; Iterative methods; Mathematical model; Noise; Optimized production technology; Homotopy Method; Linear Weighted Least Squares; Model of Least Squares; Nonlinear; Phase Unwrapping;

fLanguage

English

Publisher

ieee

Conference_Titel

Measurement, Information and Control (ICMIC), 2013 International Conference on

Conference_Location

Harbin

Print_ISBN

978-1-4799-1390-9

Type

conf

DOI

10.1109/MIC.2013.6758062

Filename

6758062