Zobrazeno 1 - 10 of 41 pro vyhledávání: '"Ok-Chul Jung"'
2
ITAD
Autor: Ok-Chul Jung, Shahroz Tariq, Simon S. Woo, Dae-Won Chung, Myeong Shin Lee, Sangyup Lee, Youjin Shin
Publikováno v: CIKM
Reducing false positives while detecting anomalies is of growing importance for various industrial applications and mission-critical infrastructures, including satellite systems. Undesired false positives can be costly for such systems, bringing the
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::a741a84236ecd67f168863f976ef6c11
https://doi.org/10.1145/3340531.3412716
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3
Schedule Optimization of Imaging Missions for Multiple Satellites and Ground Stations Using Genetic Algorithm
Autor: Kwang Hee Ko, Junghyun Lee, Hae-Dong Kim, Hyun Chung, Heewon Kim, Ok-Chul Jung, Su-Jin Choi, Dae-Won Chung
Publikováno v: International Journal of Aeronautical and Space Sciences. 19:139-152
In this paper, we propose a method that uses a genetic algorithm for the dynamic schedule optimization of imaging missions for multiple satellites and ground systems. In particular, the visibility conflicts of communication and mission operation usin
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::83bf8b464cf14b9b1f52ff474e5dc533
https://doi.org/10.1007/s42405-018-0011-9
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5
Preliminary Study on Interplanetary Trajectory Design using Invariant Manifolds of the Circular Restricted Three Body Problem
Autor: Sang-Il Ahn, Eunkyou Kim, Ok-Chul Jung, Dae-Won Chung, Hyochoong Bang
Publikováno v: Journal of the Korean Society for Aeronautical & Space Sciences. 43:692-698
This paper represents a trajectory design and analysis technique which uses invariant manifolds of the circular restricted three body problem. Instead of the classical patched conic method based on 2-body problem, the equation of motion and dynamical
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::14f9270d2caa1fdbfe05a0b3e45d6fde
https://doi.org/10.5139/jksas.2015.43.8.692
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6
Optimization of Sun-synchronous Spacecraft Constellation Orbits
Autor: Tae Soo No, Jin-Heng Choi, Hwayeong Kim, Ok-Chul Jung, Dae-Won Chung
Publikováno v: Journal of the Korean Society for Aeronautical & Space Sciences. 43:141-148
This paper presents a sun-synchronous orbit design which effectuvely includes the requirements derived from spacecraft to ground station contact and spacecraft to target image accessibility. For this purpose, operation parameters of multiple spacecra
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::35c66bfd028d15acfbb52d297db5944f
https://doi.org/10.5139/jksas.2015.43.2.141
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7
Data Scalability Design for Multi-Satellite Management based on E-R Model
Autor: Trung Kien Nguyen, Chang-Joo Moon, Do Dang Thach, Jungkeun Park, Ok-Chul Jung
Publikováno v: Applied Mathematics & Information Sciences. 9:165-170
We propose a Multi-Satellite Data Model (MSDM) for the efcient database management of multi-satellite ground control systems; the paper also explains a satellite control data management method using MSDM. The MSDM can manipulate various data attribut
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::8cf6c86a3966330002f2c0046383d20f
https://doi.org/10.12785/amis/091l21
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8
Generation of satellite tracking profile: Problems and validation algorithms
Autor: Kwang Hee Ko, Su-Jin Choi, Dae-Won Chung, Ok-Chul Jung, Jae-Gyeong Lee, Semyung Wang, Hyo-Sung Ahn
Publikováno v: Advances in Space Research. 54:1092-1107
Recently, as a satellite mission becomes complicated, it has been required to generate the schedule of satellite antenna movements automatically without relying upon operator’s ad hoc knowledge. To generate the satellite antenna schedule autonomous
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::659413bea7ea17e90396ec9b6463d995
https://doi.org/10.1016/j.asr.2014.05.021
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9
A Study on Enhancement of Orbit Prediction Precision for Space Objects Using TLE
Autor: Hyeonjeong Yim, Dae-Won Chung, Ok-Chul Jung
Publikováno v: Journal of the Korean Society for Aeronautical & Space Sciences. 42:270-278
This paper describes an improvement of space objects orbit prediction. To screen possible collisions between operational satellites and space objects, the TLE (Two-Line Element) was used as pseudo-measurement and than the orbit determination and orbi
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::f19c8582495db229e08a501db3ef32ec
https://doi.org/10.5139/jksas.2014.42.3.270
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10
Analysis on Orbital Dynamics Operation Results of KOMPSAT-3 during Early Phase after Launch
Autor: Hak-Jung Kim, Hyeonjeong Yim, Eun-Kyou Kim, Ok-Chul Jung, Dae-Won Chung
Publikováno v: Journal of the Korean Society for Aeronautical & Space Sciences. 41:319-326
This paper describes the orbital dynamics operation results for the launch and early operations phase (LEOP) of KOMPSAT-3, which was successfully launched on May 18, 2012. At the initial phase, operational orbit determination was carried out using gr
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::aebbd5b3f5fa9ffb9b841864075cba75
https://doi.org/10.5139/jksas.2013.41.4.319
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