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Construction of a Free-Space Frequency Modulated DFB-Laser-Based Radar for Measurement of Distances and Velocities
Umeå University, Faculty of Science and Technology, Department of Physics.
2017 (English)Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesis
Abstract [en]

Laser radar is a technique to get three-dimensional image information of the surrounding with high precision. Laser radar techniques have been widely studied and improved over the recent years, in particular the frequency modulated (FM) DFB-laser-based lidar. The research in this paper focuses on a implementation for short-distance measurements in the tens of cm range to demonstrate the principles of FM-DFB-laser radar. The performance of the system for distance and velocity measurements was evaluated under various condition. Results of Allan deviation show that the precision for distance measurement is 0.008 mm at the optimum integration time of 0.4 second for 100 Hz 1 V. The precision given by standard deviation of mean for distance measurements is 0.006 mm at 100 Hz 500 mV and 0.001 mm/s for velocity at 10 Hz 500 mV.

Place, publisher, year, edition, pages
2017.
National Category
Atom and Molecular Physics and Optics
Identifiers
URN: urn:nbn:se:umu:diva-142054OAI: oai:DiVA.org:umu-142054DiVA, id: diva2:1158064
Subject / course
Fysik C - Examensarbete
Available from: 2017-11-17 Created: 2017-11-17 Last updated: 2017-11-17Bibliographically approved

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