• Title, Summary, Keyword: Mission

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Operational Report of the Mission Analysis and Planning System for the KOMPSAT-I

  • Lee, Byoung-Sun;Lee, Jeong-Sook;Kim, Jae-Hoon;Lee, Seong-Pal;Kim, Hae-Dong;Kim, Eun-Kyou;Choi, Hae-Jin
    • ETRI Journal
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    • v.25 no.5
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    • pp.387-400
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    • 2003
  • Since its launching on 21 December 1999, the Korea Multi-Purpose Satellite-I (KOMPSAT-I) has been successfully operated by the Mission Control Element (MCE), which was developed by the ETRI. Most of the major functions of the MCE have been successfully demonstrated and verified during the three years of the mission life of the satellite. This paper presents the operational performances of the various functions in MAPS. We show the performance and analysis of orbit determinations using ground-based tracking data and GPS navigation solutions. We present four instances of the orbit maneuvers that guided the spacecraft form injection orbit into the nominal on-orbit. We include the ground-based attitude determination using telemetry data and the attitude maneuvers for imaging mission. The event prediction, mission scheduling, and command planning functions in MAPS subsequently generate the spacecraft mission operations and command plan. The fuel accounting and the realtime ground track display also support the spacecraft mission operations.

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Mission Effectiveness Model for Replenishment Ships (해상보급감정의 임무효과모형)

  • 신현주;하석태
    • Journal of the military operations research society of Korea
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    • v.22 no.1
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    • pp.97-113
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    • 1996
  • Mission effectiveness may be defined as a probability that a system can successfully meet an intended mission demand within a given time when operated under specified conditions. This study deals with the Mission effectiveness of a replenishment ships that is performing several types of missions. The essential attributes and their related factors affecting the replenishment missions are established, and then, a mathematical mission effectiveness model is constructed with a replenishment mission characteristics for a basis. Mission effectiveness for a mission is determined by finding the joint probability measure of the following three attributes : operational readiness of the replenishment ships at the start of a mission ; mission reliability of the replenishment ships ; capability of successfully accomplishing intended objectives given an environmental condition. The model is solved analytically. Operational readiness of the replenishment ships in found by the assumed data. Mission reliability and capability are calculated based on the assumed probability distributions. The model would be a useful tool to evaluate mission effectiveness as it is very a replenishment ships.

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Analysis of Mission Statements and Organizational Performance of Hospitals in South Korea (국내 의료기관의 사명진술문과 조직성과 분석)

  • Kim, Eun-Kyung;Kim, Se Young;Lee, Eunpyo
    • Journal of Korean Academy of Nursing
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    • v.45 no.4
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    • pp.565-575
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    • 2015
  • Purpose: The purpose of the study was to examine mission statements and their elements and to investigate correlations between mission statements and organizational performance. Methods: The current research was a descriptive study based on the examination of mission statements of 353 hospitals that posted mission statements on their webpage and 92 hospitals that made their income statements public. Results: The most common mission element was 'identification of principal services', which accounted for 92.6%. Mission statements of hospitals included the average of 4.82 mission elements out of 9, and the objective of medical quality improvement was 0.81 among 6 objectives of IOM (Institute of Medicine). Net profit of hospitals with mission statements that have above average number of mission elements were significantly higher (t=2.71, p=.008) than those of other hospitals. Net profit was significantly correlated with mission statements (r=.26, p<.001), and mission elements (r=.29, p<.001). Conclusion: The results of the study empirically reveal that mission statements in the hospital affect organizational performance. That is, better organizational performance is shown for hospitals with better, more diversified, and more firmly stated mission statements which include identification of target customers, identification of principal services, contribution to society as a non-profit organization, and concern for employees.

Unit Mission Based Mission Planning and Automatic Mission Management for Robots (단위임무 기반 로봇의 임무 계획 및 자동화 임무 관리 방법론)

  • Lee, Ho-Joo;Park, Won-Ik;Kim, Do-Jong
    • Journal of the Korea Institute of Military Science and Technology
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    • v.17 no.1
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    • pp.1-7
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    • 2014
  • In this paper, it is suggested a method of mission planning and management for robots based on the unit mission. In order to make robots execute given missions continuously as time goes by, a new concept for planning the mission which is composed of one or more unit missions and an automatic mission management scheme are developed. For managing robot's missions in real time, six management methods are devised as well in order to cope with the mismatches, which occur frequently during the mission execution, as to the initial plan. Without the operator's involvement, any mismatch can be adjusted automatically by applying one of the mission management methods. The suggested concept of mission planning and mission management methods based on the unit mission are partially realized in the Dog-Horse robot system and it is checked that it can be a viable one for developing effective robot operation systems.

Mission Effectiveness Model Applicable For Military System's Evaluation and Test Design

  • Lie, Chang-Hoon
    • Journal of Korean Institute of Industrial Engineers
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    • v.3 no.2
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    • pp.73-81
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    • 1977
  • Mission effectiveness, which is the probability of successfully completing the assigned mission, is introduced as an appropriate measure of effectiveness for a military system. The model of mission effectiveness is developed for a system which is required to carry out various types of a mission. Each mission type is characterized by the maximum allowable time that determines the success of a given mission type. A given type of a mission is successful if and only if (i) the system is available at the start of a mission and (ii) the system completes its mission within the maximum allowable duration of time that this given mission type specifies without any failure during this period. Both analytic and simulation approaches are employed. Difficulties involved in the anayticl approach are discussed. The model is proposed as a useful tool for consistent system evaluation and optimum test design.

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DESIGN AND IMPLEMENTATION OF THE MISSION PLANNING FUNCTIONS FOR THE KOMPSAT-2 MISSION CONTROL ELEMENT

  • Lee, Byoung-Sun;Kim, Jae-Hoon
    • Journal of Astronomy and Space Sciences
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    • v.20 no.3
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    • pp.227-238
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    • 2003
  • Spacecraft mission planning functions including event prediction, mission scheduling, command planning, and ground track display have been developed for the KOMPSAT-2 mission operations. Integrated event prediction functions including satellite orbital events, user requested imaging events, and satellite operational events have been implemented. Mission scheduling functions have been realized to detect the mission conflicts considering the user specified constraints and resources, A conflict free mission scheduling result is mapped into the spacecraft command sequences in the command planning functions. The command sequences are directly linked to the spacecraft operations using eXtensible Markup Language(XML) for command transmission. Ground track display shows the satellite ground trace and mission activities on a digitized world map with zoom capability.

GOES-9 GVAR Imager Processing System Development by KARI

  • Ahn, S.I.;Koo, I.H.;Yang, H.M.;Hyun, D.H.;Park, D.J.;Kang, C.H.;Kim, D.S.;Choi, H.J.;Paik, H.Y.
    • Proceedings of the KSRS Conference
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    • pp.31-33
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    • 2003
  • Recently, KARI developed in-house meteorological sensor processing system named MESIS for GOES GVAR 5-CH Imager for better KOMPSAT EOC mission operation. MESIS consists of antenna system, receiver, serial telemetry card, processing and mapping software, and 2 NT PC systems. This paper shows system requirement, system design, characteristic and test results of processing system. System operation concept and sample image are also provided. Implemented system was proven to be fully operational through lots of operations covering from RF signal reception to web publishing.

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Airfleet의 임무효과

  • Kim Yeong-Hwi;Ha Seok-Tae
    • Journal of the military operations research society of Korea
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    • v.15 no.1
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    • pp.14-27
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    • 1989
  • This paper deals with the mission effectiveness of an airfleet, Airfleet operating system consists of a finite number of units performing the several mission types. Earlier works for the mission effectiveness of a fleet is limited to only one mission type and computer simulation approaches. The mission effectiveness. model of a fleet is constructed by three attributes - the mission readiness of the units, the mission reliability and capability of units. The environmental conditions and human factors affecting the mission success are considered together. The solution of the model is obtained by analytical technique. Especially, AOS is considered a closed queueing network with a finite number of units and a single job class. And then, the mission readiness of the units is found by the mean value analysis. The model would be a useful tool to readily evaluate mission effectiveness of a airfleet as it is and provide a criterion for determining the optimal operating policy.

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A Study on the Framework of Mission Assurance for SE (시스템엔지니어링 강화를 위한 임무보증 Framework 연구)

  • Kim, Kwang Hae;Cho, Chul hoon;Ko, Jeong Hwan;Chung, Eui Seung
    • Journal of the Korea Society of Systems Engineering
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    • v.10 no.2
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    • pp.89-95
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    • 2014
  • In recent years, the United States have been several major failures of launch. As a result of these failures, activity of mission assurance valued. Mission assurance is defined as the application of systems engineering process towards the goal of achieving mission success. Therefore, mission assurance perform independent technical assessments throughout the concept and requirements definition, design, development, production, test, deployment, and operations phases. Space system program was emphasized the importance of the system engineering for that required huge cost and long term development. For this reason, independent review and verification of mission assurance is essential. Mission assurance gives us confidence to proceed with launch and best opportunity for mission success. In this study, framework of mission assurance is proposed by foreign case analysis.