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Construction of a free-space coherent laser radar for measurement of distances and velocities
Umeå University, Faculty of Science and Technology, Department of Physics.
2018 (English)Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesis
Abstract [en]

A free space frequency modulated continuous wave (FMCW) laser radar has been realized to measure distances and velocities. The radar is based on the Michelson interferometer and the laser frequency is modulated by a 500 Hz triangular wave. From a photo detector, a beat signal of light interference can be detected. By analyzing the spectrum of the collected signal, we can calculate the distance and velocity of the target. The accuracy of distance measurement is 2.2 mm, and the velocity measurement accuracy is 0.3 mm/s. The precision of distance measurement and velocity measurement evaluated by Allan deviation are 0.39 mm and 0.365 mm/s.

Place, publisher, year, edition, pages
2018.
National Category
Atom and Molecular Physics and Optics
Identifiers
URN: urn:nbn:se:umu:diva-150040OAI: oai:DiVA.org:umu-150040DiVA, id: diva2:1230734
Subject / course
Fysik C - Examensarbete
Available from: 2018-07-04 Created: 2018-07-04 Last updated: 2018-07-04Bibliographically approved

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CiteExportLink to record
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  • apa
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