Towards high resolution absolute angle sensing using dual-wavelength laser speckle

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dc.contributor.authorGibson, Sam J.
dc.contributor.authorCharrett, Thomas O. H.
dc.contributor.authorTatum, Ralph P.
dc.coverage.spatialGlasgow, UK
dc.date.accessioned2024-07-15T13:02:20Z
dc.date.available2024-07-15T13:02:20Z
dc.date.freetoread2024-07-15
dc.date.issued2024-06-28
dc.description.abstractWe present a two dimensional angle sensor with greater than 0.01 degrees resolution, using dual-wavelength laser speckle. The technique uses speckle correlation of a double speckle pattern, determining absolute surface tilt from a single frame. A constructed sensor was used to measure a grid of 2D angles between ±0.25° rotating around both x and y axes. Sensor performance was limited by laser mode instability effects, however an analysis of measurements demonstrated that a stable mode output could achieve bias errors of less than 0.010°, and standard deviations of 0.003° around x and 0.021° around y .
dc.description.sponsorshipEP/S01313X/1, EP/R512515/1
dc.identifier.citationGibson SJ, Charrett TOH, Tatam RP. (2024) Towards High Resolution Absolute Angle Sensing using Dual-Wavelength Laser Speckle. In: 2024 IEEE International Instrumentation and Measurement Technology Conference (I2MTC), 20-23 May 2023, Glasgow, UK
dc.identifier.doi10.1109/I2MTC60896.2024.10561063
dc.identifier.eisbn979-8-3503-8090-3
dc.identifier.eissn2642-2077
dc.identifier.isbn979-8-3503-8091-0
dc.identifier.issn2642-2069
dc.identifier.urihttps://doi.org/10.1109/I2MTC60896.2024.10561063
dc.identifier.urihttps://dspace.lib.cranfield.ac.uk/handle/1826/22638
dc.language.isoen
dc.publisherIEEE
dc.relation.isreferencedbyhttps://doi.org/10.17862/cranfield.rd.24592725
dc.rightsAttribution 4.0 Internationalen
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/
dc.subjectSurface waves
dc.subjectWavelength measurement
dc.subjectMeasurement by laser beam
dc.subjectSurface emitting lasers
dc.subjectSpeckle
dc.subjectLaser stability
dc.subjectRobot sensing systems
dc.titleTowards high resolution absolute angle sensing using dual-wavelength laser speckle
dc.typeConference paper
dcterms.dateAccepted2024-01-24
dcterms.temporal.endDate23-05-2024
dcterms.temporal.startDate20-05-2024

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