Results 21 to 30 of about 723 (177)

Localization and classification of space objects using EfficientDet detector for space situational awareness [PDF]

open access: yesScientific Reports, 2022
Space situational awareness (SSA) systems play a significant role in space navigation missions. One of the most essential tasks of this system is to recognize space objects such as spacecrafts and debris for various purposes including active debris ...
Nouar AlDahoul   +3 more
doaj   +2 more sources

Uncertainty Quantification for Space Situational Awareness and Traffic Management

open access: yesSensors, 2019
This paper presents a sensor-orientated approach to on-orbit position uncertainty generation and quantification for both ground-based and space-based surveillance applications.
Samuel Hilton   +5 more
doaj   +2 more sources

Frigate: A Novel Dataset Comprising Wide Field-of-View Astronomical FITS Images of Low Earth Orbit Scenes for Machine Learning Applications [PDF]

open access: yesScientific Data
This report presents Frigate, a novel astronomical dataset comprising still-frame images of a section of Low Earth Orbit (LEO), collected by ExoAnalytic Solutions Inc., a commercial space situational awareness (SSA) provider using ground-based optical ...
Daniel S. Roll   +4 more
doaj   +2 more sources

Task Planning for Multiple-Satellite Space-Situational-Awareness Systems

open access: yesAerospace, 2021
Space situational awareness (SSA) plays an important role in maintaining space advantages. Task planning is one of the key technologies in SSA to allocate multiple tasks to multiple satellites, so that a satellite may be allocated to supervise multiple ...
Yutao Chen   +3 more
doaj   +2 more sources

Real-Time Event-Based Unsupervised Feature Consolidation and Tracking for Space Situational Awareness [PDF]

open access: yesFrontiers in Neuroscience, 2022
Earth orbit is a limited natural resource that hosts a vast range of vital space-based systems that support the international community's national, commercial and defence interests.
Nicholas Ralph   +7 more
doaj   +2 more sources

Simulation of Dense Star Map in Deep Space Based on Gaia Catalogue [PDF]

open access: yesSensors
High-fidelity star field simulation is paramount for target detection and space situational awareness (SSA) in geostationary and deep-space environments.
Puzhen Li   +3 more
doaj   +2 more sources

Classification of Low Earth Orbit (LEO) Resident Space Objects’ (RSO) Light Curves Using a Support Vector Machine (SVM) and Long Short-Term Memory (LSTM) [PDF]

open access: yesSensors, 2023
Light curves are plots of brightness measured over time. In the field of Space Situational Awareness (SSA), light curves of Resident Space Objects (RSOs) can be utilized to infer information about an RSO such as the type of object, its attitude, and its ...
Randa Qashoa, Regina Lee
doaj   +2 more sources

YOLO-GRBI: An Enhanced Lightweight Detector for Non-Cooperative Spatial Target in Complex Orbital Environments [PDF]

open access: yesEntropy
Non-cooperative spatial target detection plays a vital role in enabling autonomous on-orbit servicing and maintaining space situational awareness (SSA). However, due to the limited computational resources of onboard embedded systems and the complexity of
Zimo Zhou   +4 more
doaj   +2 more sources

The European Ionosonde Service: nowcasting and forecasting ionospheric conditions over Europe for the ESA Space Situational Awareness services

open access: yesJournal of Space Weather and Space Climate, 2015
The Earth’s ionosphere is a magnetoionic medium imbedded in a background neutral atmosphere, exhibiting very interesting refractive properties, including anisotropy, dispersion, and dissipation.
Belehaki Anna   +8 more
doaj   +2 more sources

Space Situational Awareness (SSA): Visualization of space objects in orbit and conjunction analysis

open access: yes
Η εκτόξευση του πρώτου τεχνητού δορυφόρου της Γης, του Sputnik 1, έγινε στις 4 Οκτωβρίου 1957. Από τότε, οι δορυφόροι έχουν γίνει αναγκαίο κομμάτι των υποδομών μας για την υποστήριξη της καθημερινής μας ζωής. Οι καιρικές προγνώσεις, η παρακολούθηση καταστροφών, η παρατήρηση της γης, η χαρτογράφηση και άλλες εφαρμογές, οι οποίες είναι ζωτικής σημασίας ...
Chronopoulos Ilias   +1 more
openaire   +2 more sources

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