NDLI: Vernier interferometer performance analysis

Content Provider	IEEE Xplore Digital Library
Author	Sintes, C. Llort-Pujol, G. Le Caillec, J.
Copyright Year	2011
Description	Author affiliation: Telecom Bretagne, ITI Department, CNRS UMR 3192 LabSTICC/CID, Technopôle Brest-Iroise, CS 83818 - 29238, France (Sintes, C.; Llort-Pujol, G.; Le Caillec, J.)
Abstract	Interferometry is as an interesting method to accurately estimate the direction of arrival signals. Its main drawback concerns the 2π-phase ambiguity removal in the presence of noise. Most phase unwrapping algorithms are limited by the assumption of a smooth varying phase. Although the Vernier approach requires 3 sensors or two frequencies, it remains an interesting technique to unwrap the interferometric phase that preserves the resolution. However this technique becomes really efficient (with the higher Vernier efficiency) when the baseline configuration is well suited. This study presents a formalism based on coprime numbers modeling the Vernier efficiency. This approach goes beyond the efficiency calculations because it justifies some general results with a direct impact on the Vernier design. For instance, it proves that phase efficiency is equal for any baselines pairs for a given interferometer configuration. The unambiguous interferometer is not necessarily the only optimal design to remove all the phase ambiguities. This study goes beyond by integrating the beamforming principle and proves all properties are simply adapted.
Starting Page	1
Ending Page	6
File Size	1157760
Page Count	6
File Format	PDF
ISBN	9781457714276
e-ISBN	9780933957398
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2011-09-19
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	MTS
Subject Keyword	Terminology Bismuth efficiency Interferometer design unwrapping ambiguity removal Vernier method
Content Type	Text
Resource Type	Article

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1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
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3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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