Results 21 to 30 of about 69,393 (296)
iScience, 2023 Summary: The space gravitational wave detection mission requires a super ''static and precise'' scientific experiment environment. In order to solve the non-conservative force disturbance variation and the actuator noise and measurement noise, this paper
Junjie Zhou, Aiping Pang, Hongbo Zhou
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Emulating Satellite Drag from Large Simulation Experiments [PDF]
SIAM/ASA Journal on Uncertainty Quantification, 2019 44 pages; 16 figures; 6 ...
Sun, Furong +4 more
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Space Weather, 2022 The Starlink satellites launched on 3 February 2022 were lost before they fully arrived in their designated orbits. The loss was attributed to two moderate geomagnetic storms that occurred consecutively on 3–4 February.
Dong Lin +7 more
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Remote Sensing, 2022 Atmospheric drag provides an indirect approach for evaluating atmospheric mass density, which can be derived from the Precise Orbit Determination (POD) of Low Earth Orbit (LEO) satellites. A method was developed to estimate nongravitational acceleration,
Yueqiang Sun +15 more
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Space Weather, 2023 We present results from a study of the time lags between changes in the energy flow into the polar regions and the response of the thermosphere to the heating.
Daniel R. Weimer +3 more
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Fuel Optimization for Low Earth Orbit Maintenance [PDF]
Journal of Astronomy and Space Sciences, 2008 The resolution of Earth images taken from a satellite has close relation with satellite's altitude. If a satellite has lower altitude, it gets a picture having better resolution.
Yong Jae Park +3 more
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Thermospheric mass density measurement from precise orbit ephemeris
Geodesy and Geodynamics, 2016 Atmospheric drag, which can be inferred from orbit information of low-Earth orbiting (LEO) satellites, provides a direct means of measuring mass density.
Junyu Chen, Jizhang Sang
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Storm time neutral density assimilation in the thermosphere ionosphere with TIDA
Journal of Space Weather and Space Climate, 2022 To improve Thermosphere–Ionosphere modeling during disturbed conditions, data assimilation schemes that can account for the large and fast-moving gradients moving through the modeled domain are necessary.
Codrescu Mihail V. +2 more
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Forecast analysis on satellites that need de-orbit technologies: future scenarios for passive de-orbit devices [PDF]
, 2016 Propulsion-based de-orbit is a space-proven technology; however, this strategy can strongly limit operational lifetime, as fuel mass is dedicated to the de-orbiting. In addition previous reliability studies have identified the propulsion subsystem as one
Kingston, Jennifer, Palla, Chiara
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Toward Accurate Physics‐Based Specifications of Neutral Density Using GNSS‐Enabled Small Satellites
Space Weather, 2021 Satellite‐atmosphere interactions cause large uncertainties in low‐Earth orbit determination and prediction. Thus, knowledge of and the ability to predict the space environment, most notably thermospheric mass density, are essential for operating ...
Eric K. Sutton +6 more
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