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On the evaluation of the true phase of interferograms
Author(s) -
Ahmad Falih H.,
Helms Gary L.,
Castellane Ray M.,
Durst Bartley P.
Publication year - 2001
Publication title -
microwave and optical technology letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.304
H-Index - 76
eISSN - 1098-2760
pISSN - 0895-2477
DOI - 10.1002/mop.10086
Subject(s) - sine , phase (matter) , microwave , trigonometric functions , algorithm , phase unwrapping , interferometry , mathematics , electronic engineering , optics , computer science , physics , engineering , telecommunications , geometry , quantum mechanics
Abstract An iterative technique that uses sine and cosine modulations along with low‐pass filtering to extract the true phase values of a carrier frequency interferogram is proposed in this paper. An illustrative example is given in which this technique is applied. Results generated from the application of this technique are compared with exact phase values, and excellent agreement between the exact and computed phase values is demonstrated. © 2002 John Wiley & Sons, Inc. Microwave Opt Technol Lett 32: 40–43, 2002.