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Construction of a fiber-coupled DFB-laser-based frequency modulated laser radar
Umeå University, Faculty of Science and Technology, Department of Physics.
2016 (English)Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesis
Abstract [en]

In this thesis we construct a fiber-coupled DFB-laser-based frequency modulated coherent laser radar for assessment of distance and velocity of a target. The system is based on an in-fiber Mach-Zehnder heterodyne interferometer. We measure the position of the target in a 60-cm span, with 1.4 mm error and velocity of the target in 2 to 35 mm/s range, with 0.2 mm/s error. The acquisition time for each measurement is around 60 ms for the position measurement and 120 ms for the velocity measurement. Using Allan variance we measure the minimum detection limit of our system for position measurement which is 30 m after 120 s of averaging.

Place, publisher, year, edition, pages
2016.
National Category
Atom and Molecular Physics and Optics
Identifiers
URN: urn:nbn:se:umu:diva-122052OAI: oai:DiVA.org:umu-122052DiVA: diva2:936843
Subject / course
Fysik C - Examensarbete
Available from: 2016-06-14 Created: 2016-06-14 Last updated: 2016-06-14Bibliographically approved

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