Results 21 to 30 of about 9,161,553 (268)

Extension of highly elliptical Earth orbits using continuous low-thrust propulsion [PDF]

open access: yes, 2013
The extension of highly elliptical orbits, with free selection of orbit period, using low thrust propulsion is investigated. These newly proposed orbits, termed Taranis orbits, are enabled by existing low-thrust propulsion technology, offering a ...
Macdonald, Malcolm, Anderson, Pamela
core   +4 more sources

Extension of earth orbits using low-thrust propulsion [PDF]

open access: yes, 2010
The primary motivation for the utilization of space for environmental science, and in-particular Earth Observation, is the unique vantage point which a spacecraft can provide.
Anderson, Pamela, Macdonald, M.
core   +3 more sources

LEO Satellite Constellation for Global-Scale Remote Sensing With On-Orbit Cloud AI Computing

open access: yesIEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, 2023
This article proposes a new satellite-based framework for global-scale remote sensing that is integrated with on-orbit cloud computing and artificial intelligence (AI) services.
Yuejin Li   +4 more
doaj   +1 more source

Pseudo-Stochastic Orbit Modeling Techniques for Low-Earth Orbiters [PDF]

open access: yesJournal of Geodesy, 2006
The Earth’s non-spherical mass distribution and atmospheric drag cause the strongest perturbations on very low-Earth orbiting satellites (LEOs). Models of gravitational and non-gravitational accelerations are utilized in dynamic precise orbit determination (POD) with GPS data, but it is also possible to derive LEO positions based on GPS precise point ...
Jäggi, Adrian   +2 more
openaire   +1 more source

Orbit Propagation and Determination of Low Earth Orbit Satellites

open access: yesInternational Journal of Antennas and Propagation, 2014
This paper represents orbit propagation and determination of low Earth orbit (LEO) satellites. Satellite global positioning system (GPS) configured receiver provides position and velocity measures by navigating filter to get the coordinates of the orbit ...
Ho-Nien Shou
doaj   +1 more source

Forward modeling of spaceborne radar observations [PDF]

open access: yesAtmospheric Measurement Techniques
Accurate forward models, particularly radiative transfer models, are essential for the assimilation of both passive and active satellite observations in modern data assimilation frameworks.
I. Moradi, I. Moradi, S. Kalluri, Y. Zhu
doaj   +1 more source

Review of the Development of Low Earth Orbit Satellite Communication for Smart High-Speed Railway

open access: yes天地一体化信息网络, 2023
Low-earth orbit satellites have the advantages of wide bandwidth, low latency, and large coverage, making them very suitable as a supplement to ground cellular networks.Low-earth orbit satellites can meet the requirements of smart high-speed railway full
Zhaoyang SU   +5 more
doaj   +2 more sources

Study the Effect of Solar Radiation Pressure at Several Satellite Orbits

open access: yesمجلة بغداد للعلوم, 2013
The effects of solar radiation pressure at several satellite (near Earth orbit satellite, low Earth orbit satellite, medium Earth orbit satellite and high Earth orbit satellite ) have been investigated.
Baghdad Science Journal
doaj   +1 more source

Hunting axions in low earth orbit.

open access: yes, 2009
Contribution to ...
Huber, Patrick   +1 more
openaire   +2 more sources

An orbit optimization method for low earth orbit electronic reconnaissance constellation [PDF]

open access: yesZhihui kongzhi yu fangzhen
Low-orbit constellation is a hot spot in the field of aerospace in recent years, which shows many advantages in the fields of communication, navigation, reconnaissance and so on.
HUANG Yuting, YANG Yining, ZHU Ziyi, GAO Weijie, DONG Yuxiang, LIU Xiangyang
doaj   +1 more source

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