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Development of a time-of-flight laser scanning system for underwater applications

 
: Stemmler, Simon; Werner, Christoph; Reiterer, Alexander

:
Postprint urn:nbn:de:0011-n-5619409 (4.2 MByte PDF)
MD5 Fingerprint: 3e22b0bef72f32139cf592df044adbc6
Copyright Society of Photo-Optical Instrumentation Engineers. One print or electronic copy may be made for personal use only. Systematic reproduction and distribution, duplication of any material in this paper for a fee or for commercial purposes, or modification of the content of the paper are prohibited.
Erstellt am: 24.10.2019


Bostater, Charles R. (Hrsg.) ; Society of Photo-Optical Instrumentation Engineers -SPIE-, Bellingham/Wash.:
Remote Sensing of the Ocean, Sea Ice, Coastal Waters, and Large Water Regions 2019 : 9-12 September 2019, Strasbourg, France
Bellingham, WA: SPIE, 2019 (Proceedings of SPIE 11150)
Paper 111500M, 6 S.
Conference "Remote Sensing of the Ocean, Sea Ice, Coastal Waters, and Large Water Regions" <2019, Strasbourg>
Englisch
Konferenzbeitrag, Elektronische Publikation
Fraunhofer IPM ()
LiDAR; underwater mapping; laser scanning; full waveform

Abstract
An increasing number of underwater construction projects demand a solution for precise and highly resolved infrastructure monitoring which cannot be addressed by conventional sonar systems. We present an optical ranging system based on the pulsed time-of-flight method incorporating a signal-processing toolchain especially equipped for mapping technical infrastructure. This allows us to handle multiple returns from objects which are only separated by a 15 cm gap. A high lateral resolution of 4 mm in combination with a high measurement rate of 50 000 measurements per second allows the reconstruction of fine details. The measurement range can reach several 10 m, depending on the water quality. Further, we present the system design of our scanner and discuss first results obtained in an underwater measurement range.

: http://publica.fraunhofer.de/dokumente/N-561940.html