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Construction of a free-space DFB-laser-based frequency modulated laser radar for measurement of distance and velocity
Umeå universitet, Teknisk-naturvetenskapliga fakulteten, Institutionen för fysik.
2016 (engelsk)Independent thesis Basic level (degree of Bachelor), 10 poäng / 15 hpOppgave
Abstract [en]

The aim of this experiment is to construct a frequency modulated laser radar for measuring the distance and velocity of an object. The system is based on a DFB laser and a heterodyne Michelson interferometer constructed by free space components. Using the laser radar we measure the position of an object in a 60 cm range with a maximum error of 2.6 mm, and the velocity of an object in 3 to 20 mm/s with a maximum error of 0.11 mm/s. The acquisition times are 60 ms and 120 ms for the position and velocity measurements respectively. Using Allan variance we estimate to have an absolute position detection sensitivity of 20 μm after ~200s of averaging.

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2016.
HSV kategori
Identifikatorer
URN: urn:nbn:se:umu:diva-122046OAI: oai:DiVA.org:umu-122046DiVA, id: diva2:936814
Fag / kurs
Fysik C - Examensarbete
Tilgjengelig fra: 2016-06-14 Laget: 2016-06-14 Sist oppdatert: 2016-06-14bibliografisk kontrollert

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