Results 41 to 50 of about 186,069 (295)
A Unification of Models of Tethered Satellites [PDF]
, 2011 In this paper, different conservative models of tethered satellites are related mathematically, and it is established in what limit they may provide useful insight into the underlying dynamics.
Kristiansen, K. Uldall +8 more
core +1 more source
Assessment of land restoration from optical satellite image time-series [PDF]
The International Archives of the Photogrammetry, Remote Sensing and Spatial Information SciencesEcosystem conservation and restoration is recognized by the international community as a key strategy for human well-being as well as our planet’s health.
M. Ballère +6 more
doaj +1 more source
GEODA-GRUA: Adaptive Multibeam Conformal Antenna for Satellites Communications [PDF]
, 2011 The GEODA-GRUA is one conformal adaptive antenna array designed for satellite communications. Operating at 1.7 GHz with circular polarization, it is possible to track and communicate with several satellites at once being able to receive signals in full ...
Arias Campo, Marta +11 more
core +1 more source
Joint Communication, Computing, and Caching Resource Allocation in LEO Satellite MEC Networks
IEEE Access, 2023 Driven by the urgent requirement of ubiquitous and reliable coverage for global users, the low earth orbit (LEO) satellite network has attracted numerous attentions from the academic and industry circles.
Yuanyuan Hao +4 more
doaj +1 more source
Automatika, 2022 This paper focuses on experimented space projects run by universities, offering an effective design process to improve learning methods in space engineering.
Kamel Djamel Eddine Kerrouche +5 more
doaj +1 more source
Data-Driven Calibration Algorithm and Pre-Launch Performance Simulations for the SWOT Mission
Remote Sensing, 2022 The Surface Water and Ocean Topography (SWOT) mission will be affected by various sources of systematic errors, which are correlated in space and in time. Their amplitude before calibration might be as large as tens of centimeters, i.e., able to dominate
Gérald Dibarboure +9 more
doaj +1 more source
Self-organising satellite constellation in geostationary Earth orbit [PDF]
, 2015 This paper presents a novel solution to the problem of autonomous task allocation for a self-organizing satellite constellation in Earth orbit. The method allows satellites to cluster themselves above targets on the Earth’s surface.
Colombo, Camilla +3 more
core +3 more sources
Analysis of Relative Motion of Collocated Geostationary Satellites with Geometric Constraints [PDF]
, 2013 This paper investigates the design of the relative motion orbits of geostationary satellites in the presence of geometric constraints. A geometric constraint is defined by a sensor's pointing direction and field of view.
de Bruijn, F.J., Gill, E.
core
Chiral separation of chloroalkanes with the chromatographic column onboard Martian rovers
FEBS Letters, EarlyView.Computer image of the Rosalind Franklin Rover of ESA's ExoMars mission. ExoMars is scheduled to land on planet Mars in Oxia Planum in 2029. This area represents an interesting spot to look for biosignatures. Investigations of ExoMars include measurement on molecular chirality. We show that chiral chloroalkanes, that have been identified on Mars, can be
Asma Merzougui +4 more
wiley +1 more source