• Aerospace Engineering and Technology
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• v.13 no.2
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• pp.142-149
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• 2014

After launch of Low Earth Orbit(LEO) satellite, Initial Activation Checkout(IAC) and Calibration and Validation(Cal & Val) procedure are performed prior to enter normal operation phase. During normal operation phase, most of the time is allocated for mission operation except following up measures to anomaly and orbit maintenance. Since mission operation capability is key indicator for success of LEO satellite program and consistent with promotion purpose of LEO satellite program, reliability should be ensured by conducting through test. In order to ensure reliability by examining the role of LEO satellite and ground station during ground test phase, realistic test scenario that is similar to actual operation conditions should be created, and test that aims to verify full mission cycle should be performed by transmitting created command and receiving image and telemetry data. This paper describes the test design and result. Consideration items for test design are described in detail and result of designed test items are summarized.

• Proceedings of the Korean Information Science Society Conference
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• 2005.11b
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• pp.349-351
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• 2005

자가 적응 시스템을 무인 시스템(UWS: Unmanned Weapon Systems)에 적용하기 위한 다양한 연구가 이루어지고 있다. 자가 적응 시스템은 임무중인 시스템이 다양한 주변 환경 및 시스템의 변화에 따라 능동적으로 시스템 또는 임무수행을 위한 전략을 주정해 항상 최상의 성능을 발휘할 수 있도록 하는 능력을 갖춘 시스템을 말한다. 자가 적응 시스템에서 능동적으로 변화시킨 시스템의 아키텍처나 임무수행 전략이 유효한 것인지에 관한 검증을 수행한 후 시스템에 적용해야 한다. 기존의 대부분의 자가 적응 시스템에 대한 연구결과에서는 능동적으로 변화된 시스템이 임무수행에 적합한지에 대한 검증 방법을 제시해 주고 있지 않다. 본 연구에서는 UWS의 자가 적응 시스템이 임무수행 중 변화 되었을 때 미래의 발생할 사건에 대해 적절하게 적용 가능한지를 검증하기 위하여 시간적인 사건의 완전성을 검증하기에 적합한 Computation Tree Logic(CTL) 모델체킹(Model Checking)을 적용하여 자가 적응 시스템의 적응결과를 검증하는 방법을 제시하였다.

• Defense and Technology
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• no.2 s.240
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• pp.58-67
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• 1999

성공적 군사작전 지원을 위한 전술항공정찰 임무 수행 능력 구비를 위해서는 각 정보 수집 체계별 보유 기술 수준과 가용예산, 획득 우선 순위 등을 고려하여 현 작전수행 개념에 의거 운용 체제를 구축해야 할 것이다. 특히 전술항공정찰을 통한 영상정보의 수집은 항공작전 수행시 성공적인 임무수행의 보장과 통합 임무명령을 작성하기 위해 기초자료를 제공하는 핵심 활동의 하나이므로 전술항공 정찰 체계도 전투기 확보와 같은 비중과 종합적인 운용개념을 가지고 검토되고 확보되어야 할 것이다

• Korean Security Journal
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• no.18
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• pp.55-72
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• 2009

The successful performance ability of the private security of a bodyguard is evaluated as the quality of the bodyguard. However, the performance ability of a bodyguard is never decided only with his/her ability. When the educational development of a security company is continuously made, bodyguards and their team belonging to the company can obtain a good evaluation. It is also directly connected with the recognition of a company that plays the role of CP. A fundamental repetition education over safety and happiness should be conducted to avoid the lack of safety awareness under genuine recognition. Security companies should surely understand that liberation from the uneasiness for unclear future is not achieved only with the skill and ability of a bodyguard. The ability of a single bodyguard does not represent his/her team. The security of a client is maintained with a satisfying result of a team. The satisfaction result of a client should be linked to a result to improve the personal satisfaction of a bodyguard. When a security company and its CEO support an education that rightly regulates the activities of a bodyguard, the quality of a bodyguard and the satisfaction of his/her team obviously improve together. This research aims at being used as educational material that is needed for maintaining the psychological condition of a client while guarding the client. This is because the method accessing the excellent performance ability of a bodyguard needed by a client can be achieved through education.

• Proceedings of the Korean Society of Broadcast Engineers Conference
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• 2020.11a
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• pp.172-175
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• 2020

최근 스마트시티, 자율 주행 자동차 등 기계에 의해 소비되는 영상 데이터의 양이 증가함에 따라 기계의 임무 수행 능력을 향상시킬 수 있는 압축기술이 필요하게 되었다. 그런데, 전통적 방식의 영상 코덱은 사람의 인지 화질 특성을 고려해 개발된 기술이기 때문에 기계의 임무 수행에 필수적인 정보 외에도 불필요한 정보가 존재한다. 따라서 사람이 아닌 기계의 임무 수행에 대해 효율적으로 영상을 압축하기 위한 비디오 코덱 기술이 필요하다. 이와 관련하여, 최근 MPEG에서 Video Coding for Machines라는 영상 압축기술에 대한 표준화가 논의되고 있다. 본 논문에서는 기계를 위한 영상 압축기술의 연구배경과 연구를 통해 전통적인 영상 압축 코덱 방식과 neural network 기반 압축 코덱 방식에 대해 각각의 방식이 머신비전 임무를 수행한 정확도를 기준으로 영상 압축성능을 비교해 효율적인 압축 코덱 방식에 대해 분석한다.

• KIPS Transactions on Software and Data Engineering
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• v.6 no.6
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• pp.285-292
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• 2017

There are technological, operational and environmental constraints at tactical edge, which are disconnected operation, intermittent connectivity, and limited bandwidth (DIL), size, weight and power (SWaP) limitations, ad-hoc and mobile network, and so on. To overcome these limitations and constraints, we use service-oriented architecture (SOA) based technologies. In our research, we propose a hierarchical mission service model that supports service-oriented mission planning and execution in order for a commander to operate various SW required for mission in battlefield environment. We will also implement development tools that utilize the workflow technology and semantic capability-based recommendation and apply them to combat mission scenarios to demonstrate effectiveness.

• Journal of Advanced Navigation Technology
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• v.20 no.3
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• pp.238-245
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• 2016

There are technological, operational and environmental constraints at tactical edge, which are disconnected operation, intermittent connectivity, and limited bandwidth (DIL), size, weight and power (SWaP) limitations, ad-hoc and mobile network, and so on. To overcome these limitations and constraints, we use service-oriented architecture (SOA) based technologies. Moreover, the operation environment is highly dynamic: requirements change in response to the emerging situation, and the availability of resources needs to be updated constantly due to the factors such as technical failures. In order to use appropriate resources at the right time according to the mission, it needs to find the best resources. In this context, we identify ontology-based mission service model including mission, task, service, and resource, and develop capability-based matching in tactical edge environment. The goal of this paper is to propose a capability-based semantic matching for dynamic resource allocation. The contributions of this paper are i) military domain ontologies ii) semantic matching using ontology relationship; and (iii) the capability-based matching for the mission service model.

• 대한공업교육학회지
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• v.44 no.1
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• pp.114-140
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• 2019

The purpose of this research is to analyze a principal's job at a Vocational High School using DACUM Task Analysis Method. The contents of this research are to set the order after deriving the duties and tasks of the principal., then to verify as the importance, difficulty, and frequency of each task, and also to indicate whether it is an essential capability to have in the early stages of one's duty. Finally, based on the job analysis results, a DACUM chart was developed by the principal of the Vocational High School. The DACUM Task Analysis Workshop was attended by one DACUM analyst with LEVEL - 1 license, seven DACUM members with more than four years experience, one secretary and two administrative assistants for a two-day period. The results of the research are as follows; First, the Vocational High School Principal is defined as a school administrator who operate the vocational education curriculum of in the specialized and customized high schools of industrial demand development and the job area. The analysis derived 11 duties and 95 tasks of the Principal. Second, the importance, difficulties, and frequency of each task were divided respectively into high (A), moderate (B), and low (C), and the consensus of the experts was made to determine whether the core capabilities are acquired early on the job. Third, based on the analysis results, a DACUM Task Analysis chart of the Vocational High School principals was presented. In addition, while engaged on the job of the vocational high school principal, a list of 49 general knowledge and abilities, 16 tools, Integrated data and fixtures are required. Along with 28 attitudes 33 future prospects and characteristics of the Vocational High School principal was presented.

• Proceedings of the Korean Society of Precision Engineering Conference
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• 2004.05a
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• pp.24-24
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• 2004

인간과 로봇이 공존하는 불확실하고 예측이 어려운 복잡한 환경에서 로봇이 원하는 목적지까지 안전하게 주행하고, 원하는 작업을 수행하기 위해서는 로봇의 인지능력, 판단능력 및 강인한 적응능력이 요구된다. 이러한 로봇을 구성하는데 있어서 시스템의 통합, 즉 제어구조의 설계는 매우 중요하다. 고전적인 제어구조의 형태는 각각 단편화된 deliberative 구조이거나 reactive 구조였다. deliberative 구조는 센서 데이터를 이용한 환경 모델링을 통해 복잡한 환경에서 로봇의 임무수행과 인간과의 의사전달을 가능하게 하였다.(중략)

• Journal of the Korea Society for Simulation
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• v.20 no.2
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• pp.59-66
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• 2011

In this paper, a method to allocate a submarine search mission to an ASW(Anti-Submarine Warfare) helicopter is proposed. The aim of the proposed method is to increase the submarine detection capability. For this purpose, we modeled the behaviors that the ASW helicopter conduct during the search mission, and the relations between the behaviors are also modeled. To measure quantitatively the effectiveness of ASW search mission, the measure of effectiveness(MOP) is defined. Scenarios are designed to analyze the effectiveness utilizing the ASW mission model. We conducted simulations applying the designed scenarios and some parameters concerned with the friendly ship and the enemy submarine interacting each other in the ASW missions. We analyzed the result of simulation depending on the dipping interval and the pattern of dipping positions in the situation that the helicopter operates for a long time and should resupply several times on the friendly ship. From the analyzed data, we suggested the practical value of ratio between the detectable range of the sonar and the dipping interval to improve the effectiveness of ASW mission.