Results 11 to 20 of about 35,939 (297)
Performance Analysis of the First Korean Satellite Laser Ranging System [PDF]
Journal of Astronomy and Space Sciences, 2014 The first Korean satellite laser ranging (SLR) system, Daedeok SLR station (DAEK station) was developed by Korea Astronomy and Space Science Institute (KASI) in 2012, whose main objectives are space geodesy researches.
Man-Soo Choi +18 more
doaj +1 more source
Thermosphere modeling capabilities assessment: geomagnetic storms
Journal of Space Weather and Space Climate, 2021 The specification and prediction of density fluctuations in the thermosphere, especially during geomagnetic storms, is a key challenge for space weather observations and modeling.
Bruinsma Sean +3 more
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Short-Term Comparison of Several Solutinos of Elliptic Relative Motion [PDF]
Journal of Astronomy and Space Sciences, 2007 Recently introduced, several explicit solutions of relative motion between neighboring elliptic satellite orbits are reviewed. The performance of these solutions is compared with an analytic solution of the general linearized equation of motion.
Jung Hyun Jo +3 more
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Trend Analysis of GPS Precipitable Water Vapor Above South Korea Over the Last 10 Years [PDF]
Journal of Astronomy and Space Sciences, 2010 We analyzed global positioning system (GPS)-derived precipitable water vapor (PWV) trends of the Korea Astronomy and Space Science Institute 5 stations (Seoul, Daejeon, Mokpo, Milyang, Sokcho) where Korea Meteorological Administration meteorological ...
Dong-Hyo Sohn, Jungho Cho
doaj +1 more source
Perverted Space-Time Geodesy in Einstein’s Views on Geometry
Philosophia Scientiæ, 2018 A perverted space-time geodesy results from the idea of variable rods and clocks, whose length and rates are taken to be affected by the gravitational field.
Mario Bacelar Valente
doaj +1 more source
Earth, Planets and Space, 2021 We have produced a 5-year mean secular variation (SV) of the geomagnetic field for the period 2020–2025. We use the NASA Geomagnetic Ensemble Modeling System (GEMS), which consists of the NASA Goddard geodynamo model and ensemble Kalman filter (EnKF ...
Andrew Tangborn +3 more
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A new laser-ranged satellite for General Relativity and space geodesy: I. An introduction to the LARES2 space experiment [PDF]
, 2017 We introduce the LARES 2 space experiment recently approved by the Italian Space Agency (ASI). The LARES 2 satellite is planned for launch in 2019 with the new VEGA C launch vehicle of ASI, ESA and ELV.
Ciufolini, Ignazio +10 more
core +1 more source
Retrieval of Electron Density Profile for KOMPSAT-5 GPS Radio Occultation [PDF]
Journal of Astronomy and Space Sciences, 2007 The AOPOD (Atmosphere Occultation and Precision Orbit Determination) system, the secondary payload of KOMPSAT (KOrea Multi-Purpose SATellite)-5 scheduled to be launched in 2010, shall provide GPS radio occultation data.
Woo-Kyoung Lee +8 more
doaj +1 more source
SAR Ship–Iceberg Discrimination in Arctic Conditions Using Deep Learning
Remote Sensing, 2022 Maritime surveillance of the Arctic region is of growing importance as shipping, fishing and tourism are increasing due to the sea ice retreat caused by global warming. Ships that do not identify themselves with a transponder system, so-called dark ships,
Peder Heiselberg +3 more
doaj +1 more source
Fracture behaviour of alloys for a new laser ranged satellite [PDF]
, 2018 A new laser-ranged satellite called LARES 2 (Laser Relativity Satellite 2) has been recently designed for accurate tests of Einsten's theory of General Relativity and space geodesy.
Brotzu, A. +4 more
core +1 more source