Phase-Difference Ambiguity Resolution for a Single-Frequency Signal

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Title: Phase-Difference Ambiguity Resolution for a Single-Frequency Signal
Authors: Ballal, Tarig
Bleakley, Chris J.
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Date: Dec-2008
Abstract: In this letter, we propose a novel method to disambiguate the phase-difference of a single-frequency signal observed between a pair of spatially separated sensors, with inter-sensor spacing exceeding half the wavelength of the signal, lambda over two. We mathematically prove that, in a noiseless case, the true phase-difference can unambiguously be estimated utilizing a third collinear sensor, provided that the absolute difference between the two smaller inter-sensor spacings does not exceed lambda over two. The performance of the method is characterized by estimating the probability of failure in noisy cases.
Type of material: Journal Article
Publisher: IEEE
Copyright (published version): 2008 IEEE
Keywords: Phase-difference unwrappingSensor arraysTime-delay estimation
DOI: 10.1109/LSP.2008.2005439
Language: en
Status of Item: Peer reviewed
Appears in Collections:Computer Science Research Collection

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