Results 71 to 80 of about 437 (189)

Ground Track Maintenance Maneuver Simulations for the KOMPSAT Spacecraft [PDF]

Journal of Astronomy and Space Sciences, 1998
Ground track maintenance maneuver simulations for the KOMPSAT spacecraft are performed for three and half years. Both longitude targeting and time targeting strategies are applied for in-plane maneuvers. The nominal longitude bands of maneuvers for ±5 km
Byoung-Sun Lee, Jeong-Sook Lee
doaj  

Electron Phase Space Densities in Geostationary Orbits as Measured With GK2A, GOES‐16, and GOES‐17 Satellites

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, J. Seon, W. H. Seol, K. H. Kim, D. E. Larson, G. K. Parks, H. U. Auster, W. Magnes, S. Kraft, D. Y. Lee, A. Boudouridis, P. T. M. Loto'aniu, J. V. Rodriguez   +12 more
wiley   +1 more source

Assessment of Commercial GNSS Radio Occultation Performance from PlanetiQ Mission

Remote Sensing
Global Navigation Satellite System (GNSS) radio occultation (RO) provides valuable 3-D atmospheric profiles with all-weather, all the time and high accuracy. However, GNSS RO mission data are still limited for global coverage.
Mohamed Zhran, Ashraf Mousa, Yu Wang, Fahdah Falah Ben Hasher, Shuanggen Jin   +4 more
doaj   +1 more source

Validation of GPS Based Precise Orbits Using SLR Observations [PDF]

Journal of Astronomy and Space Sciences, 2009
In this study, the YLPODS (Yonsei Laser-ranging Precision Orbit Determination System) is developed for POD using SLR (Satellite Laser Ranging) NP (Normal Point) observations. The performance of YLPODS is tested using SLR NP observations of TOPEX/POSEIDON
Young-Rok Kim, Eunseo Park, Sang-Young Park, Kyu-Hong Choi, Yoola Hwang, Hae-Yeon Kim, Byoung-Sun Lee, Jaehoon Kim   +7 more
doaj   +1 more source

Feasibility Study on SAR Systems on Small Satellites [PDF]

, 2009
The design of an orbital SAR mission is the result of a number of trade-offs. For example, a higher resolution requires more transmitted power, or an increase in the strip-map azimuth resolution results in a smaller possible swath.
García Mondéjar, Albert
core  

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, M. H. Denton, A. Boudouridis   +2 more
wiley   +1 more source

GEOSPATIAL ANALYSIS USING REMOTE SENSING IMAGES: CASE STUDIES OF ZONGULDAK TEST FIELD [PDF]

The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2016
Inclined topographies are one of the most challenging problems for geospatial analysis of air-borne and space-borne imageries. However, flat areas are mostly misleading to exhibit the real performance.
Ç. Bayık, H. Topan, M. Özendi, M. Oruç, A. Cam, S. Abdikan   +5 more
doaj   +1 more source

Increasing the Information Content of Radar Images in Remote Sensing Systems based on Fractal Processing Methods [PDF]

, 2019
Поступила 02.04.2019. Принята в печать 10.05.2019.Received: 02.04.2019. Accepted: 10.05.2019.Анализируется фрактальная размерность, которая количественно оценивает сложность и хаотический характер радиолокационного изображения природных текстур. Показано,
Kobernichenko, V. G., Trenikhin, V. A., Коберниченко, В. Г., Тренихин, В. А.   +3 more
core   +4 more sources

Historical rainstorm in Hong Kong on 7–8 September 2023: Diagnosis, forecasting and nowcasting

Atmospheric Science Letters, Volume 26, Issue 1, January 2025.
Past 24‐h rainfall analysis over Hong Kong ending at 1600 Hong Kong Time (HKT) on 8 September 2023, the historical rainstorm. Abstract On 7–8 September 2023, Hong Kong was hit by a historical and record‐breaking rainstorm associated with the remnant of Tropical Cyclone Haikui (2311).
Hiu Ching Tam, Yu‐Heng He, Pak Wai Chan, Shiwei Yu, Huisi Mo, Hui Su, Ling‐Feng Hsiao, Yangzhao Gong   +7 more
wiley   +1 more source

Cross-evaluation of GEMS tropospheric ozone retrieval performance using OMI data and the use of an ozonesonde dataset over East Asia for validation [PDF]

Atmospheric Measurement Techniques, 2019
The Geostationary Environment Monitoring Spectrometer (GEMS) is scheduled to be launched in 2019–2020 on board the GEO-KOMPSAT (GEOstationary KOrea Multi-Purpose SATellite)-2B, contributing as the Asian partner of the global geostationary constellation ...
J. Bak, J. Bak, K.-H. Baek, J.-H. Kim, X. Liu, J. Kim, K. Chance   +6 more
doaj   +1 more source