Results 31 to 40 of about 14,034 (233)

Findings from a Combined Subsea LiDAR and Multibeam Survey at Kingston Reef, Western Australia

open access: yesRemote Sensing, 2020
Light Detection and Ranging (LiDAR), a comparatively new technology in the field of underwater surveying, has principally been used for taking precise measurement of undersea structures in the oil and gas industry.
Simon Collings   +8 more
doaj   +1 more source

The precision calibration of depth and resolution for multibeam sonar in anechoic pool in the laboratory [PDF]

open access: yesMATEC Web of Conferences, 2019
The multibeam sonar is an important device for underwater survey, of which the measurement precision is a key parameter. We had designed an equipment to calibrate the depth and resolution precision for multibeam sonar in the anechoic pool in the ...
Shi Bei   +4 more
doaj   +1 more source

Precoding in Multigateway Multibeam Satellite Systems [PDF]

open access: yesIEEE Transactions on Wireless Communications, 2016
This paper considers a multigateway multibeam satellite system with multiple feeds per beam. In these systems, each gateway serves a set of beams (cluster) so that the overall data traffic is generated at different geographical areas. Full frequency reuse among beams is considered so that interference mitigation techniques are mandatory.
Vahid Joroughi   +2 more
openaire   +6 more sources

Multibeam bathymetry raw data (Kongsberg EM 122 entire dataset) of RV SONNE during cruise SO246

open access: yes, 2021
Multibeam data were collected during RV Sonne cruise SO246 (2016-02-01 – 2016-03-21). Multibeam sonar system was Kongsberg EM122. Data are unprocessed and may contain outliers and blunders and should not be used for grid calculations and charting ...
Dorschel, Boris   +4 more
core   +1 more source

Geomorphology and Late Pleistocene–Holocene Sedimentary Processes of the Eastern Gulf of Finland

open access: yesGeosciences, 2018
In 2017, a detailed study of the Eastern Gulf of Finland (the Baltic Sea) seafloor was performed to identify and map submerged glacial and postglacial geomorphologic features and collect data pertinent to the understanding of sedimentation in postglacial
Daria Ryabchuk   +8 more
doaj   +1 more source

Protocols for calibrating multibeam sonar

open access: yesThe Journal of the Acoustical Society of America, 2005
Development of protocols for calibrating multibeam sonar by means of the standard-target method is documented. Particular systems used in the development work included three that provide the water-column signals, namely the SIMRAD SM2000/90- and 200-kHz sonars and RESON SeaBat 8101 sonar, with operating frequency of 240 kHz.
Foote, Kenneth G.   +6 more
openaire   +5 more sources

Raw multibeam EM122 data: METEOR cruise M124 (SE Atlantic)

open access: yes, 2016
Latitude/Longitude extracted from DSHIP. Data acquisition was performed using a multibeam sonar system Simrad EM-122 from Kongsberg. Raw data are delivered within Simrad current multibeam vendor format. SIMRAD raw data can be processed i.e.
Karstensen, Johannes   +3 more
core   +1 more source

Swath sonar multibeam EM122 bathymetry during METEOR cruise M116/1 with links to raw data files

open access: yes, 2016
Latitude/Longitude extracted from DSHIP. Data acquisition was performed using a multibeam sonar system Simrad EM-122 from Kongsberg. Raw data are delivered within Simrad current multibeam vendor format. SIMRAD raw data can be processed i.e.
Augustin, Nico   +3 more
core   +1 more source

Robust Spot Melting by 3D Spot Arrangements in Electron Beam Powder Bed Fusion

open access: yesAdvanced Engineering Materials, EarlyView.
This work proposes an approach to replace separately melted contours for spot melting in electron beam powder fusion. Adapting the spot arrangements close to the contour combined with stacking yields a comparable surface quality without the inherent challenges of separate contours, as demonstrated, by electron optical images and roughness measurements.
Tobias Kupfer   +4 more
wiley   +1 more source

Swath sonar multibeam SeaBeam-1050 bathymetry during ACTIV cruise Activ_2014/Skjoldungesund with links to raw data files of bathymetry

open access: yes, 2016
Data acquisition was performed by using a multibeam sonar system ELAC SeaBeam 1050. Raw data are delivered within ELAC current multibeam vendor format. ELAC raw data can be processed e.g.
Reimer Wilhelm Weinrebe (7971302)   +3 more
core   +1 more source

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