Results 71 to 80 of about 11,569 (270)

A ground-based dataset and a diffusion model for on-orbit low-light image enhancement [PDF]

arXiv, 2023
On-orbit service is important for maintaining the sustainability of space environment. Space-based visible camera is an economical and lightweight sensor for situation awareness during on-orbit service. However, it can be easily affected by the low illumination environment. Recently, deep learning has achieved remarkable success in image enhancement of
arxiv  

Energy‐Aware Protocol Design and Evaluation of the PHY Layer in Satellite IoT

International Journal of Satellite Communications and Networking, Volume 43, Issue 2, Page 61-76, March/April 2025.
ABSTRACT Direct‐to‐satellite communication for the Internet of Things (IoT) has attracted significant interest from both the scientific community and major telecommunications players. The integration of satellite connectivity in smartphones and IoT devices promises a transformative impact on critical applications such as environmental monitoring, asset
Simon Heine, Christian A. Hofmann, Andreas Knopp   +2 more
wiley   +1 more source

First assessment of geophysical sensitivities from spaceborne Galileo and BeiDou GNSS-Reflectometry data collected by the UK TechDemoSat-1 Mission [PDF]

, 2020
The UK’s TechDemoSat-1 (TDS-1), launched 2014, has demonstrated the use of global positioning system (GPS) signals for monitoring ocean winds and sea ice.
Foti, Giuseppe, Gommenginger, Christine, Hammond, Matthew L., King, Lucinda, Rawlinson, Jonathan, Roselló, Josep, Srokosz, Meric, Unwin, Martin   +7 more
core   +1 more source

Deep Learning Driven Detection of Tsunami Related Internal GravityWaves: a path towards open-ocean natural hazards detection [PDF]

arXiv, 2023
Tsunamis can trigger internal gravity waves (IGWs) in the ionosphere, perturbing the Total Electron Content (TEC) - referred to as Traveling Ionospheric Disturbances (TIDs) that are detectable through the Global Navigation Satellite System (GNSS). The GNSS are constellations of satellites providing signals from Earth orbit - Europe's Galileo, the ...
arxiv  

Positioning of Lightning Electromagnetic Radiation Sources With Satellite Constellations: Simulation and Preliminary Validation

Earth and Space Science, Volume 12, Issue 3, March 2025.
Abstract Satellites, equipped with electromagnetic sensors, can detect and locate the lightning electromagnetic radiation sources (LERS) in the thunderstorm over the globe surface of the Earth, delivering data regarding occurrence time, geolocation, and intensity. This paper presents the study on the three‐dimensional (3D) positioning of LERS utilizing
Xiao Li, Zongxiang Li, Xiaoqiang Li, Xiong Zhang, Yunfen Chang, Kai Zhang, Yongli Wei, Baofeng Cao, Peng Li   +8 more
wiley   +1 more source

Crop-GPA: an integrated platform of crop gene-phenotype associations

npj Systems Biology and Applications
With the increasing availability of large-scale biology data in crop plants, there is an urgent demand for a versatile platform that fully mines and utilizes the data for modern molecular breeding.
Yujia Gao, Qian Zhou, Jiaxin Luo, Chuan Xia, Youhua Zhang, Zhenyu Yue   +5 more
doaj   +1 more source

Performance Analysis of Beidou-2/Beidou-3e Combined Solution with Emphasis on Precise Orbit Determination and Precise Point Positioning

Sensors, 2018
In 2015, the plan for global coverage by the Chinese BeiDou Navigation Satellite System was launched. Five global BeiDou experimental satellites (BeiDou-3e) are in orbit for testing.
Xiaolong Xu, Min Li, Wenwen Li, Jingnan Liu   +3 more
doaj   +1 more source

Convolution-Transformer Adaptive Fusion Network for Hyperspectral Image Classification

Applied Sciences, 2022
Hyperspectral image (HSI) classification is an important but challenging topic in the field of remote sensing and earth observation. By coupling the advantages of convolutional neural network (CNN) and Transformer model, the CNN–Transformer hybrid model ...
Jiaju Li, Hanfa Xing, Zurui Ao, Hefeng Wang, Wenkai Liu, Anbing Zhang   +5 more
doaj   +1 more source

Pilot Evaluation of Integrating GLONASS, Galileo and BeiDou with GPS in Araim [PDF]

, 2016
© 2016 Artificial Satellites. In this pilot study, availability of the Advanced Receiver Autonomous Integrity Monitoring (ARAIM) when integrating various combinations of satellite constellations including; Galileo, GLONASS and BeiDou with GPS is ...
El-Mowafy, Ahmed
core   +1 more source

Near-real-time VTEC maps: new contribution for Latin America Space Weather [PDF]

, 2019
The development of regional services able to provide ionospheric vertical totalelectron content (VTEC) maps and ionospheric indexes with a high spatialresolution, and in near-real-time, are of great importance for both civilianapplications and the research community. We provide here the methodolo-gies, and an assessment, of such a system.
arxiv   +1 more source