Results 71 to 80 of about 14,076 (241)

SMTC Configuration and Window Adjustment Strategies for Beam Hopping in NR‐NTN

International Journal of Satellite Communications and Networking, EarlyView.
ABSTRACT Beam hopping is an effective transmission strategy for nonterrestrial networks (NTNs), enabling satellites to allocate limited power and spectrum resources across different geographical regions over time. However, in NR‐based NTN systems, beam hopping complicates synchronization monitoring because synchronization signal block (SSB) arrivals ...
Hee Wook Kim, Kyungrak Lee, Joon Gyu Ryu
wiley   +1 more source

Raw multibeam EM122 data: transits of SONNE cruise SO264 (Pacific) [PDF]

, 2019
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.
Steffen, Melanie, Melanie Steffen (6978179), Dirk Nürnberg (6968570), Anne-Cathrin Wölfl (6958358), Wölfl, Anne-Cathrin, Nürnberg, Dirk   +5 more
core   +1 more source

Giant pockmarks discovered on the West Greenland shelf

Arctic, Antarctic, and Alpine Research
Pockmarks provide valuable insights into subsurface fluid dynamics, methane release, and potential geohazards. We present the first detailed mapping and characterization of giant pockmarks (>250 m diameter) on the West Greenland continental shelf using ...
Diana W. Krawczyk, Christine L. Batchelor, Aqqaluk D. Sørensen, Jens Lowag   +3 more
doaj   +1 more source

The use of singlebeam echo‐sounder depth data to produce demersal fish distribution models that are comparable to models produced using multibeam echo‐sounder depth

Ecology and Evolution, 2021
Seafloor characteristics can help in the prediction of fish distribution, which is required for fisheries and conservation management. Despite this, only 5%–10% of the world's seafloor has been mapped at high resolution, as it is a time‐consuming and ...
Marcela Montserrat Landero Figueroa, Miles J. G. Parsons, Benjamin J. Saunders, Ben Radford, Chandra Salgado‐Kent, Iain M. Parnum   +5 more
doaj   +1 more source

Performing a Sonar Acceptance Test of the Kongsberg EM712 Using Open-Source Software: A Case Study of Kluster

Geomatics, 2022
In the world of seafloor mapping, the ability to explore and experiment with a dataset in its raw and processed forms is critical. Kluster is an open-source multibeam data processing software package written in Python that enables this exploration ...
Eric Younkin, S. Harper Umfress
doaj   +1 more source

Pre‐failure behavior of continuous post‐tensioned and post‐grouted beam in case of tendon failure

Structural Concrete, EarlyView.
Abstract Grouted tendons are a common solution for long‐span bridge structures. The grout provides bond and corrosion protection for prestressing steel. However, if the grouting is defective, corrosion of the prestressing steel may initiate and eventually lead to tendon failure.
Olli Asp, Joonas Tulonen, Anssi Laaksonen   +2 more
wiley   +1 more source

Optogenetic activation multibeam data. [PDF]

, 2023
(A) Box plots of daytime sleep bout duration for multibeam analysis of vehicle-fed flies presented in Fig 2M. Two-way repeated measures ANOVA followed by Sidak’s multiple comparisons test found no difference in daytime sleep bout duration when the flies ...
Kiran R. Eiken (14710432), Jennifer A. McEllin (7964396), Brandon L. Holder (14710429), Alex Vogt (14710435), Joseph D. Jones (13883524), Adriana I. Velarde (14710438), Alexandra J. Elder (14710441), Stephane Dissel (669593)   +7 more
core   +1 more source

The magic project: genesis, implementation, and results

Journal of Maps
The Magic Project was conceived following a submarine-generated tsunami at Stromboli in 2002. Recognizing the lack of knowledge on submarine geohazards, the Italian Civil Protection Department launched the project in 2007, aiming to map marine geohazards
Francesco L. Chiocci
doaj   +1 more source

Submerged geomorphic record of Quaternary palaeoshorelines: terraces and clinothems along a shelf‐edge in the Žirje Archipelago, Adriatic Sea

Boreas, EarlyView.
Numerous studies have shown that during the Quaternary there were substantial fluctuations in sea level in response to glacial–interglacial climate variability, reaching lowstand positions up to 134 m below the present sea level (b.s.l.). These fluctuations have had a strong influence on the morphology of shallow shelf seas, which preserve evidence of ...
Ozren Hasan, Dea Brunović, Natalia Smrkulj, Maria Geraga, Dimitris Christodoulou, Nikolina Ilijanić, George Papatheodorou, Slobodan Miko   +7 more
wiley   +1 more source

Protocols for calibrating multibeam sonar

The 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., Chu, Dezhang, Hammer, Terence R., Baldwin, Kenneth, Mayer, Larry A., Hufnagle, Lawrence C., Jr., Jech, J Michael   +6 more
openaire   +5 more sources