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Title: 2-D weighted least-squares phase unwrapping

Abstract

Weighted values of interferometric signals are unwrapped by determining the least squares solution of phase unwrapping for unweighted values of the interferometric signals; and then determining the least squares solution of phase unwrapping for weighted values of the interferometric signals by preconditioned conjugate gradient methods using the unweighted solutions as preconditioning values. An output is provided that is representative of the least squares solution of phase unwrapping for weighted values of the interferometric signals. 6 figs.

Inventors:
;
Issue Date:
Research Org.:
AT&T Corporation
OSTI Identifier:
63446
Patent Number(s):
5,424,743
Application Number:
PAN: 8-251,988
Assignee:
Dept. of Energy, Washington, DC (United States) SNL; SCA: 440600; PA: EDB-95:092551; SN: 95001401174
DOE Contract Number:  
AC04-76DP00789
Resource Type:
Patent
Resource Relation:
Other Information: PBD: 13 Jun 1995
Country of Publication:
United States
Language:
English
Subject:
44 INSTRUMENTATION, INCLUDING NUCLEAR AND PARTICLE DETECTORS; INTERFEROMETERS; DATA PROCESSING; LEAST SQUARE FIT; WEIGHTING FUNCTIONS; CALCULATION METHODS

Citation Formats

Ghiglia, D.C., and Romero, L.A. 2-D weighted least-squares phase unwrapping. United States: N. p., 1995. Web.
Ghiglia, D.C., & Romero, L.A. 2-D weighted least-squares phase unwrapping. United States.
Ghiglia, D.C., and Romero, L.A. Tue . "2-D weighted least-squares phase unwrapping". United States.
@article{osti_63446,
title = {2-D weighted least-squares phase unwrapping},
author = {Ghiglia, D.C. and Romero, L.A.},
abstractNote = {Weighted values of interferometric signals are unwrapped by determining the least squares solution of phase unwrapping for unweighted values of the interferometric signals; and then determining the least squares solution of phase unwrapping for weighted values of the interferometric signals by preconditioned conjugate gradient methods using the unweighted solutions as preconditioning values. An output is provided that is representative of the least squares solution of phase unwrapping for weighted values of the interferometric signals. 6 figs.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1995},
month = {6}
}