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Robust nonlinear estimation of varying optical phase

Rehman, Obaid; Petersen, Ian; Song, Hongbin; Huntington, Elanor Harriet


This work presents a robust approach to estimate the continuously varying phase of an optical system. Here we extend the adaptive homodyne estimator scheme by using a nonlinear guaranteed cost robust filter in the feedback loop to improve the estimator performance. The nonlinear robust filter is designed by using a copy of the sector bounded nonlinear uncertainty present in the measurement of the adaptive homodyne estimator. Finally, closed loop simulations considering both linear and nonlinear...[Show more]

CollectionsANU Research Publications
Date published: 2013
Type: Conference paper
Source: 2013 European Control Conference, ECC 2013
Access Rights: Open Access


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