Results 31 to 40 of about 23,240 (261)

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

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

Object Tracking in Satellite Videos Based on Convolutional Regression Network With Appearance and Motion Features

IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, 2020
Object tracking is one of the most important components in numerous applications of computer vision. Remote sensing videos provided by commercial satellites make it possible to extend this topic into the earth observation domain.
Zhaopeng Hu, Daiqin Yang, Kao Zhang, Zhenzhong Chen   +3 more
doaj   +1 more source

Titanium Suboxides Responsible for Electronic Anomaly Near Room Temperature in the Ti3C2Tx MXene

Advanced Functional Materials, EarlyView.
Our multi‐technique study reveals that the near‐room‐temperature anomaly in Ti3C2Tx MXene is linked to titanium suboxide nanodomains, including Ti3O5, embedded within the MXene host. Their temperature‐driven transformation provides an alternative explanation to solvent‐ and swelling‐based models and offers new insight into the thermally activated ...
Bence G. Márkus, Bradlee J. McIntosh, Lili Vajtai, Anna Nyáry, Sándor H. Sipos, Nirmal J. Ghimire, Ferenc Simon, László Forró, Dávid Beke   +8 more
wiley   +1 more source

On Orbit Demonstration of Pointing Accuracy of Ground Antennas by a Flying GEO Satellite

Sakarya University Journal of Computer and Information Sciences, 2023
Geostationary Satellites (GEO) are being used commonly in communication market. The service providers uplink or downlink the signal by using their dedicated antennas (whether with or without tracking capability) to the GEO satellite.
Ümit Güler, Ümit Cezmi Yılmaz
doaj   +1 more source

Satellite-to-Satellite Tracking and Satellite Gravity Gradiometry [PDF]

, 2001
The purpose of satellite-to-satellite tracking (SST) and/or satellite gravity gradiometry (SGG) is to determine the gravitational field on and outside the Earth's surface from given gradients of the gravitational potential and/or the gravitational field at satellite altitude.
Freeden, Willi, Michel, Volker, Nutz, Helga   +2 more
openaire  

Development of a Three‐Axis Planar Hall Magnetoresistance Sensor Using a Superparamagnetic Nanoparticle‐Based Flux Guide

Advanced Functional Materials, EarlyView.
A printed superparamagnetic nanoparticle‐based flux guide enables the realization of a hysteresis‐free three‐axis magnetic sensor. This innovative architecture efficiently redirects out‐of‐plane fields to planar sensing elements, facilitating simultaneous vector detection without complex reset protocols.
Changyeop Jeon, Mijin Kim, Keonmok Kim, Byeonghwa Lim, Bibhutibhusan Nayak, Youngdo Jung, Bo‐Yeon Lee, Taehyeong Jeon, Jinwoo Kim, Sunjong Oh, CheolGi Kim   +10 more
wiley   +1 more source

Robust adaptive non‐linear alignment algorithm for SINS/DVL integrated navigation system based on variational Bayesian

IET Science, Measurement & Technology
The problem of dynamic attitude alignment for strapdown inertial navigation system (SINS) and Doppler velocity log (DVL) integrated navigation has become a research hotspot. Underwater complex environment makes DVL output vulnerable to non‐Gaussian noise
Bing Zhu, Jingshu Li, Guoheng Cui, Zuohu Li, Ge Tian, Xia Guo   +5 more
doaj   +1 more source

Numerical solution of two dimensional coupled viscous Burger equation using modified cubic B-spline differential quadrature method

AIP Advances, 2014
In this paper, a numerical solution of two dimensional nonlinear coupled viscous Burger equation is discussed with appropriate initial and boundary conditions using the modified cubic B-spline differential quadrature method. In this method, the weighting
H. S. Shukla, Mohammad Tamsir, Vineet K. Srivastava, Jai Kumar   +3 more
doaj   +1 more source