Results 11 to 20 of about 11,621 (252)

On Detecting Deception in Space Situational Awareness [PDF]

open access: yesProceedings of the 2021 ACM Asia Conference on Computer and Communications Security, 2021
Space Situational Awareness (SSA) data is critical to the safe piloting of satellites through an ever-growing field of orbital debris. However, measurement complexity means that most satellite operators cannot independently acquire SSA data and must rely on a handful of centralized repositories operated by major space powers.
Pavur, J, Martinovic, I
openaire   +1 more source

Space-Based Passive Orbital Maneuver Detection Algorithm for High-Altitude Situational Awareness

open access: yesAerospace
Orbital maneuver detection for non-cooperative targets in space is a key task in space situational awareness. This study develops a passive maneuver detection algorithm using line-of-sight angles measured by a space-based optical sensor, especially for ...
Shihang Yang   +3 more
doaj   +3 more sources

Development of a Reduction Algorithm of GEO Satellite Optical Observation Data for Optical Wide Field Patrol (OWL) [PDF]

open access: yesJournal of Astronomy and Space Sciences, 2015
An algorithm to automatically extract coordinate and time information from optical observation data of geostationary orbit satellites (GEO satellites) or geosynchronous orbit satellites (GOS satellites) is developed.
Sun-youp Park   +9 more
doaj   +1 more source

A Study on the Strategies of the Positioning of a Satellite on Observed Images by the Astronomical Telescope and the Observation and Initial Orbit Determination of Unidentified Space Objects [PDF]

open access: yesJournal of Astronomy and Space Sciences, 2011
An optical tracking system has advantages for observing geostationary earth orbit (GEO) satellites relatively over other types of observation system.
Jin Choi   +8 more
doaj   +1 more source

Assessment of FY-3E GNOS-II GNSS-R Global Wind Product

open access: yesIEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, 2022
Two different Global Navigation Satellite System (GNSS) Reflectometry wind products are to be developed for the Global Navigation Satellite System Occultation Sounder II (GNOS-II) payload on the FengYun-3E (FY-3E) satellite: A global wind product ...
Feixiong Huang   +13 more
doaj   +1 more source

A cyber situational awareness model to predict the implementation of cyber security controls and precautions by SMEs [PDF]

open access: yesOrganizational Cybersecurity Journal, 2021
Purpose – There is widespread concern about the fact that small- and medium-sized enterprises (SMEs) seem to be particularly vulnerable to cyberattacks.
Karen Renaud, Jacques Ophoff
doaj   +1 more source

Development of a Data Reduction algorithm for Optical Wide Field Patrol [PDF]

open access: yesJournal of Astronomy and Space Sciences, 2013
The detector subsystem of the Optical Wide-field Patrol (OWL) network efficiently acquires the position and time information of moving objects such as artificial satellites through its chopper system, which consists of 4 blades in front of the CCD ...
Sun-youp Park   +12 more
doaj   +1 more source

SIMULATION STUDY OF THE ENERGETIC NEUTRAL ATOM (ENA) IMAGING MONITORING OF THE GEOMAGNETOSPHERE ON A LUNAR BASE

open access: yesSolar-Terrestrial Physics, 2021
Since the moon’s revolution cycle is exactly the same as its rotation cycle, we can only see the moon always facing Earth in the same direction. Based on the clean particle radiation environment of the moon, a neutral atomic telemetry base station could ...
Li Lu   +6 more
doaj   +1 more source

Advances in soft X-ray emission of the Earth's magnetosphere

open access: yes地球与行星物理论评, 2023
The coupling between solar wind and the magnetosphere and the dynamic processes in geo-space are the basic driving factors of space weather. Understanding these processes on the system level is essential to the studies of space physics and space weather.
Tianran Sun   +5 more
doaj   +1 more source

Spectral Light Curve Simulation for Parameter Estimation from Space Debris

open access: yesAerospace, 2022
Characterisation of space debris has become a fundamental task to facilitate sustainable space operations. Ground-based surveillance provides the means to extract key attributes from spacecraft.
Max Nussbaum   +4 more
doaj   +1 more source

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