Results 21 to 30 of about 323 (141)

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   +1 more source

Orbital estimation of spacecraft under unknown low-thrust acceleration (First report: estimation of mean orbital elements)

open access: yesNihon Kikai Gakkai ronbunshu, 2015
Space Situational Awareness (SSA) has been recognized to be important for safe space activities. As low-thrust propulsion technology becomes increasingly popular, SSA for low-thrust spacecraft may become an area of increasing interest.
Naoki DATE, Mai BANDO, Shinji HOKAMOTO
doaj   +1 more source

UKRAINIAN DATABASE AND ATLAS OF LIGHT CURVES OF ARTIFICIAL SPACE OBJECTS

open access: yesOdessa Astronomical Publications, 2017
This  paper  describes  the  Ukrainian database  of  long-term  photometric  observations  of resident  space  objects  (RSO).  For  the  purpose  of  using this  database  for  the  outer  space  monitoring  and  space situational awareness (SSA) the ...
N. I. Koshkin   +9 more
doaj   +1 more source

RGB-D based multi-modal deep learning for spacecraft and debris recognition

open access: yesScientific Reports, 2022
Recognition of space objects including spacecraft and debris is one of the main components in the space situational awareness (SSA) system. Various tasks such as satellite formation, on-orbit servicing, and active debris removal require object ...
Nouar AlDahoul   +2 more
doaj   +1 more source

Remote ultra-low light imaging (RULLI) for space situational awareness (SSA): modeling and simulation results for passive and active SSA [PDF]

open access: yesSPIE Proceedings, 2008
Remote Ultra-Low Light Imaging detectors are photon limited detectors developed at Los Alamos National Laboratories. RULLI detectors provide a very high degree of temporal resolution for the arrival times of detected photo- events, but saturate at a photo-detection rate of about 10 6 photo-events per second.
Michael C. Roggemann   +6 more
openaire   +1 more source

Space Target Tracking with the HRRP Characteristic-Aided Filter via Space-Based Radar

open access: yesRemote Sensing, 2023
Approaching space target tracking is a typical and challenging mission in the space situational awareness (SSA) field. As the space-based radar is able to monitor the space targets of interest full-weather all-time, the space-based radar system is ...
Shuyu Zheng   +4 more
doaj   +1 more source

Denoising and Feature Extraction for Space Infrared Dim Target Recognition Utilizing Optimal VMD and Dual-Band Thermometry

open access: yesMachines, 2022
Space target feature extraction and space infrared target recognition are important components of space situational awareness (SSA). However, owing to far imaging distance between the space target and infrared detector, the infrared signal of the target ...
Hao Zhang   +4 more
doaj   +1 more source

Microservice-Based Platform for Space Situational Awareness Data Analytics

open access: yesInternational Journal of Aerospace Engineering, 2020
The development, deployment, and maintenance of the current space situational awareness (SSA) information system have become increasingly complex. However, researchers cannot flexibly and conveniently apply the research results to practical applications ...
Wanjie Lu   +6 more
doaj   +1 more source

Space Object Recognition With Stacking of CoAtNets Using Fusion of RGB and Depth Images

open access: yesIEEE Access, 2023
Space situational awareness (SSA) system requires recognition of space objects that are varied in sizes, shapes, and types. The space images are challenging because of several factors such as illumination and noise and thus make the recognition task ...
Nouar Aldahoul   +4 more
doaj   +1 more source

Digital Transformation in Work Integration Social Enterprises: Leadership Strategies and the Role of Internal Stakeholders

open access: yesCorporate Social Responsibility and Environmental Management, EarlyView.
ABSTRACT Digital transformation is increasingly reshaping how social enterprises organize work, engage stakeholders, and pursue social value. While prior research has examined digitalization in hybrid organizations, limited attention has been paid to how responsibility for inclusive digital transformation is enacted internally.
Riccardo Maiolini   +2 more
wiley   +1 more source

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