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Georeferencing and Spatial Representation of Two-Dimensional SONAR Images

Meyer, Lea (2020) Georeferencing and Spatial Representation of Two-Dimensional SONAR Images. Bachelor's. DLR-Interner Bericht. DLR-IB-MI-BV-2020-249, 100 S.

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Abstract

The presented thesis deals with the augmented visualization from a two- to three-dimensional scene of visualised backscattered signals, captured by a two-dimensional multi-beam BlueView P900-130 Sound Navigation And Ranging (SONAR), as well as its georefencing, against the background of harbour risk management and sheet pile wall examination. Alongside the data acquisition and preparation a simple methodology for combining depth values, motion parameters, underwater positioning data and two-dimensional SONAR images is presented, in order to provide an economically priced alternative to high-quality, but also upscale three-dimensional multi-beam SONAR. By means of the provided sensors systems by the German Aerospace Center DLR, Institute for the Protection of Maritime Infrastructures, a measurement trial in the Fischereihafen 1 (Bremerhaven, Germany), was realised using concrete reference objects in the accuracy range of the SONAR. The resulting program structure of data acquisition, preprocessing and final visualization is concerted to the utilized systems and can be handled by instructed person with a minimum of programming knowledge. Regarding the outcome of the measurement trial a lack of precision in the three-dimensional representation along the depth, due to the large vertical coverage of the SONAR, can be observed. Also a floating of the sensor carriers acoustic position occurred throughout the trial, on account of interferences between the acoustic sensors.

Item URL in elib:https://elib.dlr.de/140596/
Document Type:Monograph (DLR-Interner Bericht, Bachelor's)
Title:Georeferencing and Spatial Representation of Two-Dimensional SONAR Images
Authors:
AuthorsInstitution or Email of AuthorsAuthor's ORCID iD
Meyer, LeaLea.Meyer (at) dlr.deUNSPECIFIED
Date:2 July 2020
Refereed publication:No
Open Access:Yes
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
Number of Pages:100
Status:Published
Keywords:ROV AUV Remote operated Vehicle Sonar Multibeam Bluerov Maritime Safety and Security
Institution:University of Applied Sciences bremerhaven
HGF - Research field:other
HGF - Program:other
HGF - Program Themes:other
DLR - Research area:no assignment
DLR - Program:no assignment
DLR - Research theme (Project):no assignment
Location: Bremerhaven
Institutes and Institutions:Institute for the Protection of Maritime Infrastructures > Maritime Security Technologies
Deposited By: Heuskin, David
Deposited On:25 Feb 2021 09:28
Last Modified:25 Feb 2021 09:28

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