Results 51 to 60 of about 2,490,935 (346)

Comparing spatial patterns of marine vessels between vessel-tracking data and satellite imagery

Frontiers in Marine Science, 2023
Monitoring marine use is essential to effective management but is extremely challenging, particularly where capacity and resources are limited. To overcome these limitations, satellite imagery has emerged as a promising tool for monitoring marine vessel ...
Shinnosuke Nakayama, WenXin Dong, Richard G. Correro, Elizabeth R. Selig, Colette C.C. Wabnitz, Colette C.C. Wabnitz, Trevor J. Hastie, Trevor J. Hastie, Jim Leape, Serena Yeung, Fiorenza Micheli, Fiorenza Micheli, Fiorenza Micheli   +12 more
doaj   +1 more source

Robust Tracking Strategy for Modern GNSS Receivers in Sounding Rockets

, 2022
180186This paper presents a robust tracking strategy for global navigation satellite system (GNSS) receivers in sounding rockets. The continuous tracking of sounding rockets using G NSS signals becomes challenging due to the high signal dynamics ...
Felber, Wolfgang, Wolfgang Felber, Santiago Urquijo, Matthias Overbeck, Overbeck, Matthias, Mayer, Volker, Werner Enderle, Cortes Vidal, Inigo, Volker Mayer, Urquijo, Santiago, Enderle, Werner, Erik Schonemann, Agrotis, Loukis G., Loukis Agrotis, Ieigo Cortes, Schönemann, Erik   +15 more
core   +1 more source

Encyclopedia of 2D β′‐In2Se3 Growth Using Chemical Vapor Deposition: The Effects of Synthesis Parameters Onto Material Quality

Advanced Engineering Materials, EarlyView.
A distinct semi‐confined inner‐tube chemical vapor deposition geometry enables reproducible, large‐area growth of phase‐pure 2D β′‐In2Se3 from InI + Se precursors. Engineering local vapor transport and optimizing precursor delivery and temperature–time conditions yield uniform continuous films.
Dasun P. W. Guruge, P. Sanju S. Panawala, Joseph F. S. Fernando, Zhenhuan Chen, Chao Zhang, Dong‐Chen Qi, Liangzhi Kou, Konstantin L. Firestein, Dmitri V. Golberg   +8 more
wiley   +1 more source

Satellite Tracking Sea Turtles: Opportunities and Challenges to Address Key Questions

Frontiers in Marine Science, 2018
GH was supported by the Bertarelli Foundation as part of the Bertarelli Programme in Marine Science.
G. Hays, L. Hawkes
semanticscholar   +1 more source

Portable outdoor ground antenna system for satellite tracking

, 2023
This project will be on creating a portable outdoor ground antenna system for satellite tracking and mainly focusing on the power system. The ground station is engineered for easy deployment in remote and challenging locations where traditional ...
Xu, Jie
core  

Inverse Identification of Energy‐Dependent Laser Absorptivity in NiTi Laser Powder‐Bed Fusion via Calibrated Melt Pool Simulation

Advanced Engineering Materials, EarlyView.
A combined experimental–computational framework identifies energy‐dependent laser absorptivity for NiTi in laser powder‐bed fusion, applicable to conduction and transition modes. Single‐track experiments and thermofluid smoothed particle hydrodynamics simulations are coupled through inverse analysis of melt pool geometry.
Mohamadreza Afrasiabi, Hadi Moutablaleh, Ignatius A. Setiawan, Mehrshad Mehrpouya   +3 more
wiley   +1 more source

Application of Space-Based Orientation Observation in Orbit Determination of BeiDou Satellites

Aerospace
When a navigation constellation depends exclusively on inter-satellite links for autonomous orbit determination, the absence of inertial frame orientation measurements can result in the accumulation of rotational errors across the entire constellation ...
Xiaojie Li, Guangyao Chen, Shanshi Zhou, Ting Zhang, Shan Wu, Lu Zhang, Yingying Zhao, Ying Liu   +7 more
doaj   +1 more source

Species distribution models for a migratory bird based on citizen science and satellite tracking data

, 2017
Species distribution models can provide critical baseline distribution information for the conservation of poorly understood species. Here, we compared the performance of band-tailed pigeon ( Patagioenas fasciata) species distribution models created ...
Christopher L. Coxen, J. K. Frey, S. Carleton, D. Collins   +3 more
semanticscholar   +1 more source

Optical High-Capacity Satellite Downlinks via High-Altitude Platform Relays

, 2007
Earth-observation (EO) satellite missions produce a large amount of data using high-resolution optical or radar sensors. During the last decades the amount of data has steadily increased due to improved sensor technologies with increased temporal ...
Florian Moll, Bischl, Hermann, Markus Knapek, Giggenbach, Dirk, Joachim Horwath, Horwath, Joachim, Courville, Nicolas, Knapek, Markus, Bernd Epple, Moll, Florian, Nicolas Courville, Hermann Bischl, Epple, Bernhard, Dirk Giggenbach   +13 more
core   +1 more source

Rationally Designed Bilayer Passivation Strategy for High‐Performance Vacuum‐Processed Perovskite Solar Cells

Advanced Functional Materials, EarlyView.
A bilayer “Anchor‐and‐Seal” passivation strategy using EDAI2 and 4MeO‐PEAI effectively mitigates surface defects in vacuum‐processed perovskite films through synergistic hydrogen bonding and Lewis base coordination. This approach optimizes interfacial energy alignment and suppresses non‐radiative recombination, enabling vacuum‐deposited p‐i‐n ...
Mohammadhossein Kohan, Sang‐Heon Lee, Jaswinder Singh, Sung‐Nam Kwon, Seok‐In Na   +4 more
wiley   +1 more source