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Range statistics and suppressing snowflakes: detects for laser range finders in snowfall
Umeå universitet, Umeå.
Luleå University of Technology, Department of Computer Science, Electrical and Space Engineering, Embedded Internet Systems Lab.
2010 (English)In: Intelligent Systems: From Theory to Practice, Berlin: Springer Science+Business Media B.V., 2010, p. 261-277Chapter in book (Refereed)
Abstract [en]

This paper presents statistics on registrations from laser range finders in snowfall. The sensors are standard laser range finders in robotics, the LMS200 and the URG-04LX. Three different working cases were identified for the pulsed laser range finder. 1) Normal operation with background objects present within the range of the sensor. 2) Close range objects where ranges to objects are shorter than the pulse length. 3) Free-space in the background. The findings are summarized as: Two laser range finders have been used, one that sends out a pulsed wide beam and one with a modulated narrow laser beam. The narrow beam laser has better penetration between the snowflakes. Median filtering shows a substantial reduction in snowflake detects. The gamma distribution describes fairly well the range distribution of detected snowflakes. In an intense snowfall where about 24% of the ranges detected snowflakes. A time-polar median filter showed good results in suppressing snowflakes in range data

Place, publisher, year, edition, pages
Berlin: Springer Science+Business Media B.V., 2010. p. 261-277
Series
Studies in Computational Intelligence, ISSN 1860-949X ; 299
National Category
Other Electrical Engineering, Electronic Engineering, Information Engineering
Research subject
Industrial Electronics
Identifiers
URN: urn:nbn:se:ltu:diva-20179DOI: 10.1007/978-3-642-13428-9_12Scopus ID: 2-s2.0-77957730561Local ID: 29626050-d85f-11df-8b36-000ea68e967bISBN: 978-3-642-13427-2 (print)OAI: oai:DiVA.org:ltu-20179DiVA, id: diva2:993223
Note

Validerad; 2011; 20101015 (ysko)

Available from: 2016-09-29 Created: 2016-09-29 Last updated: 2018-07-10Bibliographically approved

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Rönnbäck, SvenWernersson, Åke

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CiteExportLink to record
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  • apa
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Output format
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