• Title/Summary/Keyword: Mission Operations

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KOMPSAT SATELLITE LAUNCH AND DEPLOYMENT OPERATIONS

  • Baek, Myung-Jin;Chang, Young-Keun;Lee, Jin-Ho
    • Journal of Astronomy and Space Sciences
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    • v.16 no.2
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    • pp.199-208
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    • 1999
  • In this paper, KOMPSAT satellite launch and deployment operations are discussed. The U.S. Taurus launch vehicle delivers KOMPSAT satellite into the mission orbit directly. Launch and deployment operations is monitored and controlled by several international ground stations including Korean Ground Station (KGS). After separation from launch vehicle, KOMPSAT spacecraft deploys solar array by on-board autonomous stored commands without ground inter-vention and stabilizes the satellite such that solar arrays point to the sun. Autonomous ground communication is designed for KOMPSAT for the early orbit ground contact. KOMPSAT space-craft has capability of handing contingency situation by on-board fault management design to retry deployment sequence.

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Analysis of SEAD Mission Procedures for Manned-Unmanned Aerial Vehicles Teaming (유무인기 협업 기반의 SEAD 임무 수행절차 분석)

  • Kim, Jeong-Hun;Seo, Wonik;Choi, Keeyoung;Ryoo, Chang-Kyung
    • Journal of the Korean Society for Aeronautical & Space Sciences
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    • v.47 no.9
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    • pp.678-685
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    • 2019
  • Due to the changes in future war environment and the technological development of the aviation weapon system, it is required to carry out on the analysis of the Manned-Unmanned aerial vehicles Teaming(MUM-T). Conventional manned-unmanned aerial vehicles operate according to the air strategy missions and vehicles' performance. In this paper, we analyze conventional aerial vehicle's mission to derive various kinds of missions of MUM-T after analyzing the unmanned aircraft systems roadmap issued by US DoD and the air strategy of US Air Force. Next, we identify the basic operations of the vehicles to carry out the missions, select the MUM-T based Suppression of Enemy Air Defense missions(SEAD), and analyze the procedure for performing the missions step by step. In this paper, we propose a procedure of the mission in the context of physical space and timeline for the realization of the concept of MUM-T.

Future Direction of Mission Operation System for Satellite Constellation and the Automation Priority Evaluation (군집위성 임무운영시스템 발전방향 및 자동화 우선순위 평가)

  • Jung, Insik;Yoon, Jeonghun;Lee, Myungshin;Lee, Junghyun;Kwon, Kybeom
    • Journal of Aerospace System Engineering
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    • v.16 no.3
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    • pp.10-22
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    • 2022
  • According to the Space Development Promotion Basic Plan, more than 110 satellites are expected to be deployed by 2031. Accordingly, the operation concept and technology for satellites constellation are required, compared to the existing few multi-satellite operations. It is essential to automate and optimize the mission operation system, for efficient operation of the satellite constellation, and preparations are urgently needed for the operation of satellite constellation in domestic as well. In this study, the development direction and strategy of the mission operation system applying automation and optimization for efficient operation of the satellite constellation are proposed. The framework for evaluating the automation level and priority of the mission operation system was developed, to identify the tasks to which automation should be applied preferentially.

Lessons Learned from Korea Pathfinder Lunar Orbiter Flight Dynamics Operations: NASA Deep Space Network Interfaces and Support Levels

  • Young-Joo Song;SeungBum Hong;Dong-Gyu Kim;Jun Bang;Jonghee Bae
    • Journal of Astronomy and Space Sciences
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    • v.40 no.2
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    • pp.79-88
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    • 2023
  • On Aug. 4, 2022, at 23:08:48 (UTC), the Korea Pathfinder Lunar Orbiter (KPLO), also known as Danuri, was launched using a SpaceX Falcon 9 launch vehicle. Currently, KPLO is successfully conducting its science mission around the Moon. The National Aeronautics and Space Administration (NASA)'s Deep Space Network (DSN) was utilized for the successful flight operation of KPLO. A great deal of joint effort was made between the Korea Aerospace Research Institute (KARI) and NASA DSN team since the beginning of KPLO ground system design for the success of the mission. The efficient utilization and management of NASA DSN in deep space exploration are critical not only for the spacecraft's telemetry and command but also for tracking the flight dynamics (FD) operation. In this work, the top-level DSN interface architecture, detailed workflows, DSN support levels, and practical lessons learned from the joint team's efforts are presented for KPLO's successful FD operation. Due to the significant joint team's efforts, KPLO is currently performing its mission smoothly in the lunar mission orbit. Through KPLO cooperative operation experience with DSN, a more reliable and efficient partnership is expected not only for Korea's own deep space exploration mission but also for the KARI-NASA DSN joint support on other deep space missions in the future.

KITSAT-3 Development and Initial Operations Results

  • Sungdong Park;Taejin Chung;Seorim Lee;Sangkeun Yoo;Hyunwoo lee;Yunhwang Jeong;Jachun Koo;Younghoon Shin;Kyunghee Kim
    • Proceedings of the KSRS Conference
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    • 1999.11a
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    • pp.31-36
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    • 1999
  • The development of a low earth orbit microsatellite is recognized as a good means of enhancing the technological capability, to gain experience and to train engineers to acquire knowledge and experience in space systems. Most developed countries in space technology do not allow the transfer of critical space technologies such as technology involved in attitude determination and control systems. And the export of critical components and equipment such as high precision attitude sensors is tightly controlled. Therefore it is inevitable to independently acquire self-design and manufacturing capability to implement a satellite mission. The KITSAT-3 program was aimed at verifying the capability to design, develop and operate an indigenous microsatellite system, which includes such critical technologies and associated components and equipment, as well as train engineers. KITSAT-3 was launched on May 26, 1999 using the Indian launcher PSLV-C2. The operations team has successfully performed a full functional checkout during the launch and early operations phase and the satellite is presently in a normal operations mode. This paper introduces the KITSAT-3 program and the results of the initial operations.

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OCI and ROCSAT-1 Development, Operations, and Applications

  • Chen, Paul;Lee, L.S.;Lin, Shin-Fa
    • Korean Journal of Remote Sensing
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    • v.15 no.4
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    • pp.367-375
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    • 1999
  • This paper describes the development, operations, and applications of ROCSAT-l and its Ocean Color Imager (OCI) remote-sensing payload. It is the first satellite program of NSPO. The satellite was successfully launched by Lockheed Martin's Athena on January 26, 1999 from Cape Canaveral, Florida. ROCSAT-l is a Low Earth Orbit (LEO) experimental satellite. Its circular orbit has an altitude of 600km and an inclination angle of 35 degrees. The satellite is designed to carry out scientific research missions, including ocean color imaging, experiments on ionospheric plasma and electrodynamics, and experiments using Ka-band (20∼30GHz) communication payloads. The OCI payload is utilized to observe the ocean color in 7 bands (including one redundant band) of Visible and Near-Infrared (434nm∼889nm) range with the resolution of 800m at nadir and the swath of 702km. It employs high performance telecentric optics, push-broom scanning method using Charge Coupled Devices (CCD) and large-scale integrated circuit chips. The water leaving radiance is estimated from the total inputs to the OCI, including the atmospheric scattering. The post-process estimates the water leaving radiance and generates different end products. The OCI has taken images since February 1999 after completing the early orbit checkout. Analyses have been performed to evaluate the performances of the instrument in orbit and to compare them with the pre-launch test results. This paper also briefly describes the ROCSAT-l mission operations. The spacecraft operating modes and ROCSAT Ground Segment operations are delineated, and the overall initial operations of ROCSAT-l are summarized.

A Study on Unmaned Underwater Vehicle Operational Performance Analysis for Mine Search Operation (무인잠수정 기뢰 탐색 효과도 분석)

  • Hwang, A-Rom;Kim, Moon-Hwan;Lee, Sim-Yong;Yoon, Jae-Moon;Kim, Chan-Ki
    • Journal of the Korea Institute of Military Science and Technology
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    • v.14 no.5
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    • pp.781-787
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    • 2011
  • Mine countermeasure missions(MCMs) may induce the loss of human and ship because of the covert of mine. In recent years, unmanned underwater vehicles(UUVs) have emerged as viable technical solution for conductimg underwater search, surveillance, and clearance operations in support of mine countermeasure missions because of her autonomy and long time endurance capability. This paper introduces a technical approach to mine countermeasure mission effectiveness analysis and presents some simulation-based analysis results for engineering of the UUV system definition which could be support analysis of alternatives for system definition and design.

Design Approach to Satellite Test and Operations Common Procedure Languages (위성시험운영 통합 절차서 언어 설계 접근)

  • Kwak, Nam-Yee;Huh, Yun-Goo;Choi, Jong-Yeoun
    • Aerospace Engineering and Technology
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    • v.8 no.2
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    • pp.170-178
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    • 2009
  • In order to develope a common ground system, a general procedure language that can be used in both EGSE and MCS is primarily needed. As the first step in developing a common test and integration procedure language, KARI's ATS for AIT and MCE for GS were compared to some of the most representative languages such as PLUTO regarded European standard, STOL and ELISA and PIL. Based on the analysis, design features of developing a common test and integration procedure language were presented.

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Mission Control System for KOMPSAT-2 Operations (다목적 실용위성2호 관제시스템 운용)

  • Jeong, Won-Chan;Lee, Byeong-Seon;Lee, Sang-Uk;Kim, Jae-Hun
    • Journal of Satellite, Information and Communications
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    • v.1 no.2
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    • pp.76-82
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    • 2006
  • The Mission Control System for KOMPSAT-2 was developed by ETRI and is being operated at Satellite Control Center at KARI to monitor and control KOMPSAT-2 (KOrea Multi-Purpose Satellite) which was launched in July 28th, 2006. MCE provides the functions such as telemetry reception and processing, telecommand generation and transmission, satellite tracking and ranging, orbit prediction and determination, attitude maneuver planning, satellite simulation, etc. KOMPSAT-2 is the successor of KOMPSAT-1 which is an earth-observation satellite. KOMPSAT-2 has higher resolution image taking ability due to MSC (Multi Spectral Camera) payload in the satellite and precise orbit and attitude determination by Mission Control System. It can produce one meter resolution image compared to six meter resolution image by KOMPSAT-1.

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Agents for Autonomous Distributed Secret Sharing Storage System

  • Hayashi, Daisuke;Miyamoto, Toshiyuki;Doi, Shinji;Kumagai, Sadatoshi
    • Proceedings of the IEEK Conference
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    • 2002.07a
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    • pp.482-485
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    • 2002
  • For mission-critical and safe-critical operations of medical information, financial, or administrative systems, a reliable and robust storage system is indispensable. The main purpose of our research is to develop a high-confidential, reliable, and survivable storage system.

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