Results 61 to 70 of about 990 (182)
Applicable Tracking Data Arcs for NORAD TLE Orbit Determination of the KOMPSAT-1 Satellite Using GPS Navigation Solutions [PDF]
Journal of Astronomy and Space Sciences, 2005 NORAD Two Line Element (TLE) is very useful to simplify the ground station antenna pointing and mission operations. When a satellite operations facility has the capability to determine NORAD type TLE which is independent of NORAD, it is important to ...
Byoung-Sun Lee
doaj +1 more source
Journal of Geophysical Research: Earth Surface, Volume 130, Issue 6, June 2025.Abstract During the 2018–2019 Antarctic summer, the Korea Polar Research Institute and the University of Texas Institute for Geophysics collaborated on a helicopter‐based ice‐penetrating radar (IPR) survey over the active subglacial lake D2 (SLD2), located in the midstream of the David Glacier, Terra Nova Bay, Antarctica.
Hyeontae Ju +10 more
wiley +1 more source
Feasibility Study of Synthetic Aperture Radar - Adaptability of the Payload to KOMPSAT Platform [PDF]
Journal of Astronomy and Space Sciences, 2002 Synthetic Aperture Radar (SAR) has been used for mapping the surface geomorphology of cloudy planets like Venus as well as the Earth. The cloud-free Mars is also going to be scanned by SAR in order to detect buried water channels and other features under
Young-Soo Kim, Sang-Ryool Lee
doaj +1 more source
Improvement of Kompsat-5 Sea Surface Wind with Correction Equation Rretrieval and Application
, 2020 KOMPSAT-5 is the first satellite in Korea equipped with X-band Synthetic Aperture Radar (SAR) instrument and has been operated since August 2013. The availability of KOMPSAT-5 is highlighted as the need of high resolution wind for coastal monitoring ...
Dochul Yang +7 more
core +1 more source
Analysis and Simulations for the Severe Turbulence Event Aloft Myanmar on 21 May 2024
Meteorological Applications, Volume 32, Issue 3, May/June 2025.This paper performed an analysis of a severe turbulence event encountered by Singapore airlines SQ321 on 21 May 2024 over Myanmar, which led to one fatality and multiple injuries. Model simulation with convective permitting resolution indicated the development of convective cells, but precise Eddy Dissipation Rate (EDR) values are difficult to obtain ...
Christy Yan Yu Leung +4 more
wiley +1 more source
Robustness and Actuator Bandwidth of MRP-Based Sliding Mode Control for Spacecraft Attitude Control Problems [PDF]
Journal of Astronomy and Space Sciences, 2009 Nonlinear sliding surface design in variable structure systems for spacecraft attitude control problems is studied. A robustness analysis is performed for regular form of system, and calculation of actuator bandwidth is presented by reviewing sliding ...
Jung-Hoon Keum, Sung-Woong Ra
doaj +1 more source
, 2017 Along with the appearance of high resolution satellite images, image correction using Rational Polynomial Coefficients (RPCs) has become common. Location accuracy of Korea Multipurpose Satellite (KOMPSAT) standard images is still not adequate, so, in ...
Kwangjae Lee, Younsoo Kim, Eunseon Kim
core +1 more source
Journal of Geophysical Research: Space Physics, Volume 130, Issue 4, April 2025.Abstract This study investigated electron phase space densities (PSDs) in geostationary orbits using data from Korea's geostationary satellite, GK2A, as well as GOES‐16 and GOES‐17 satellites. The PSDs were computed from electron fluxes measured by each satellite during a geomagnetically quiet period as defined by stringent conditions on geomagnetic ...
C. H. Lee +12 more
wiley +1 more source
Quantitative Assessment of GOES 8–15 > ${ >} $0.6 and > ${ >} $4 MeV Radiation Belt Electron Fluxes
Space Weather, Volume 23, Issue 3, March 2025.Abstract On Geostationary Operational Environmental Satellites (GOES) 8–15 (1996–2020), the Energetic Particle Sensor (EPS) included three integral electron channels, with nominal lower energies of 0.6 MeV (E1), 2 MeV (E2) and 4 MeV (E3). The > ${ >} $2 MeV channel has received more attention than the other two channels, because it is used by the NOAA ...
J. V. Rodriguez +2 more
wiley +1 more source
Study on Equatorial Bubbles Detected by SPS IMS Onboard the Kompsat-I [PDF]
Journal of Astronomy and Space Sciences, 2002 Space Physics Sensor onboard the KOMPSAT-1, which was launched at 1999, had transmitted ionospheric data during the solar maximum from June 2000 to August 2001.
Jaejeung Park +3 more
doaj +1 more source