Results 21 to 30 of about 561,644 (183)

The zero gravity curve and surface and radii for geostationary and geosynchronous satellite orbits

open access: yesJournal of Geodetic Science, 2017
A geosynchronous satellite orbits the Earth along a constant longitude. A special case is the geostationary satellite that is located at a constant position above the equator.
Sjöberg L.E.   +2 more
doaj   +1 more source

Displaced geostationary orbits using hybrid low-thrust propulsion [PDF]

open access: yes, 2010
In this paper, displaced geostationary orbits using hybrid low-thrust propulsion, a complementary combination of Solar Electric Propulsion (SEP) and solar sailing, are investigated to increase the capacity of the geostationary ring that is starting to ...
Heiligers, J.
core   +3 more sources

Recalibration of over 35 Years of Infrared and Water Vapor Channel Radiances of the JMA Geostationary Satellites

open access: yesRemote Sensing, 2019
Infrared sounding measurements of the Infrared Atmospheric Sounding Interferometer (IASI), Atmospheric Infrared Sounder (AIRS), and High-resolution Infrared Radiation Sounder/2 (HIRS/2) instruments are used to recalibrate infrared (IR; ~11 µm ...
Tasuku Tabata   +4 more
doaj   +1 more source

Geocentric Spherical Surfaces Emulating the Geostationary Orbit at Any Latitude with Zenith Links

open access: yesFuture Internet, 2020
According to altitude, the orbits of satellites constellations can be divided into geostationary Earth orbit (GEO), medium Earth orbit (MEO), and low Earth orbit (LEO) constellations.
Emilio Matricciani
doaj   +1 more source

QUantitative and Automatic Atmospheric Correction (QUAAC): Application and Validation

open access: yesSensors, 2022
The difficulty of atmospheric correction based on a radiative transfer model lies in the acquisition of synchronized atmospheric parameters, especially the aerosol optical depth (AOD).
Shumin Liu   +12 more
doaj   +1 more source

Mapping daily evapotranspiration at field to continental scales using geostationary and polar orbiting satellite imagery [PDF]

open access: yesHydrology and Earth System Sciences, 2011
Thermal infrared (TIR) remote sensing of land-surface temperature (LST) provides valuable information about the sub-surface moisture status required for estimating evapotranspiration (ET) and detecting the onset and severity of drought.
M. C. Anderson   +10 more
doaj   +1 more source

Light levitated geostationary cylindrical orbits are feasible [PDF]

open access: yes, 2010
This paper discusses a new family of non-Keplerian orbits for solar sail spacecraft displaced above or below the Earth's equatorial plane. The work aims to prove the assertion in the literature that displaced geostationary orbits exist, possibly to ...
Baig, S., McInnes, C.R.
core   +5 more sources

Disposal orbits for GEO spacecraft: A method for evaluating the orbit height distributions resulting from implementing IADC guidelines [PDF]

open access: yes, 2010
Geostationary orbit (GEO) is the most commercially valuable Earth orbit. The Inter-Agency Space Debris Coordination Committee (IADC) has produced guidelines to help protect this region from space debris.
Hobbs, Stephen
core   +1 more source

Suppression of co-channel interference in NGSO constellation system with interference alignment

open access: yesTongxin xuebao, 2021
Aiming at the problem that in the current space, non-geostationary satellite orbit (NGSO) constellation systems were increasing day by day, there are more and more satellite networks nearby orbiting using the same frequency band, and the problem of co ...
Bing DU   +5 more
doaj   +2 more sources

Assessment of the Exposure of Australia to Tropical Cyclones Through a Climatological Model for Cyclone Weather Extent

open access: yesInternational Journal of Climatology, EarlyView.
Australia has different levels of exposure to tropical cyclones. Using historical records, this study investigates the spatial variability of tropical cyclone formation across the Southeast Indian–South Pacific basin, quantifies the exposure of different parts of Australia to tropical cyclone weather events, and examines decadal variability in cyclone ...
Adolfo Lugo Ríos   +2 more
wiley   +1 more source

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