• Title/Summary/Keyword: Operation Scenario

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Designing on Scenario-based Drone Platform to Enhancement Security (보안성 향상을 위한 시나리오 기반 드론 플랫폼 설계 연구)

  • Kim, Yanghoon;Hong, Chan-Ki
    • Journal of Platform Technology
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    • v.9 no.3
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    • pp.78-83
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    • 2021
  • The new industry drone research is increasing through convergence between 4th industrial revolution technology. In particular, the government indicates the D.N.A platform as a countermeasure of 4th industrial revolution. So, the research topics are remarkable which are using D.N.A platform. On the other hand, the drone for industrial and research has spatial factor based on sequential because, they performance scenario-based mission through control operation. When the drone flights as a control operation, they have necessity apply multi-dimensional methods to improve the security level. So, this study researched a scenario based drone platform to improve the security level. As a result, the space classified as a ground control system, drone, drone data server and designed the application method based on scenario security technology.

Development of Radar HILS System and Verification Radar Performance Scenario-based (레이다 비행 모의 장치 개발 및 시험 시나리오 기반 레이다 성능 검증)

  • Yong-kil Kwak
    • Journal of Advanced Navigation Technology
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    • v.27 no.5
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    • pp.574-579
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    • 2023
  • The radar flight test has many restrictions on simulating various targets, clutter and jamming signal. Therefore, in this study, a radar HILS system that performs a radar operation simulation function according to an operation scenario was developed. Radar HILS simulates the radar mission environment through radar beam operation simulation, radar operation control, simulated signal generation, and flight attitude simulation.. HILS generates and modulates simulated target signals(single, multiple targets) containing radar mission environments(clutter, jamming etc.) based on flight scenarios, and transmits them to AESA radar over RF. And Scenario-based radar performance was verified by detecting simulated targets and confirming detection results.

A Sutdy of VTS Simulator Development using port specified scenario technology (항만별 맞춤 시나리오 생성기술을 적용한 VTS시뮬레이터 개발에 관한 연구)

  • Nam, Gyeungtae;Lee, Sangil;Lee, Younggeun;Park, Gwangbok
    • Proceedings of the Korean Institute of Navigation and Port Research Conference
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    • 2013.10a
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    • pp.32-33
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    • 2013
  • In the past, the scenario of VTS simulator was made by instructor's manual operation using waypoint definition of target ship. but in this study, we use automatic scenario creation technology with AIS data and Port-MIS data. The created VTS simaulator scenario also can be modified, added, and saved by instructor's manual operation. VTS simulator display target ship on the Electronic Navigation Chart based on S-57 format. A instructor can easily open this scenario and start, pause, stop operation wirth VTS simulator. A new modification also can be applied immediately to current scenario and can be saved new scenario file. VTS simulator using this technology can create many scenarios for a specific purpose and can be easily used for various application fields.

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A Study on Prediction of Suspension Time of Unmanned Light Rail according to Safety Personal Deployment (안전요원 배치 여부에 따른 무인운전 경전철의 운행중단 시간예측 연구)

  • Sang Log Kwak
    • Journal of the Korean Society of Safety
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    • v.38 no.1
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    • pp.87-92
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    • 2023
  • The number of unmanned light rail train operators is continuously increasing in Korea. In a failure event during an operation due to the nature of the unmanned operation, recovery is performed based on the remote control. However, if remote recovery is not feasible, safety personnel arrive at the train to resume the train operation. There are regulations on safety personnel and the suspension time of the train operation. However, there is currently no rule for safety personnel deployment. Currently, railway operating organizations operate in three scenarios: safety personnel on board trains, stationed at stations, and deployed at major stations. Four major factors influence the downtime for each emergency response scenario. However, these four influencing factors vary too much to predict results with simple calculations. In this study, four influencing factors were considered as random variables with high uncertainty. In addition, the Monte Carlo method was applied to each scenario for the safety personnel deployment to predict train service downtime. This study found a 17% difference in train service suspension by safety personnel deployment scenario. The results of this study can be used in setting service goals, such as standards for future safety personnel placement and frequency of service interruptions.

A Study on the Integrated STPA-Scenario Process Model for Efficient Safety Analysis Based on Operation Scenarios of AGV (AGV 물류 이동장치의 효율적인 STPA 안전성 분석을 위한 운영 시나리오 연계 분석 프로세스 모델 연구)

  • Myung-Sung Kim;Young-Min Kim
    • Journal of the Korea Safety Management & Science
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    • v.25 no.3
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    • pp.45-53
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    • 2023
  • In order to solve the rapidly increasing domestic delivery volume and various problems in the recent metropolitan area, domestic researchers are conducting research on the development of "Urban Logistics System Using Underground Space" using existing urban railway facilities in the city. Safety analysis and scenario analysis should be performed for the safe system design of the new concept logistics system, but the scenario analysis techniques performed in previous studies so far do not have standards and are defined differently depending on the domain, subject, or purpose. In addition, it is necessary to improve the difficulty of clearly defining the control structure and the omission of UCA in the existing STPA safety analysis. In this study, an improved scenario table is proposed for the AGV horizontal transport device, which is a key equipment of an urban logistics system using underground space, and a process model is proposed by linking systematic STPA safety analysis and scenario analysis, and UCA and Control Structure Guidelines are provided to create a safety analysis.

Performance of CDMA/TDD in Multimode Scenario for Dual-band Operation (이중대역 동작을 위한 멀티모드 시나리오에서 CDMA/TDD의 성능)

  • Oh, Hyeong-Joo;Hwang, Seung-Hoon
    • Journal of the Institute of Electronics Engineers of Korea TC
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    • v.45 no.11
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    • pp.32-36
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    • 2008
  • In this paper, we investigate the capacity of CDMA/TDD in the inner zone of multimode scenario with dual-band operation where high frequency band is used for TDD in the inner zone and lower frequency band is utilized for FDD in the outer zone. The effects of various system parameters such as cell radius, date rate, and time slot allocation are analyzed.

A Study on Material Transportation Capability Analysis Method in NK using Scenario-based Simulation (시나리오 기반 시뮬레이션을 활용한 북한지역 반격 시 물자수송 능력 분석방법 연구)

  • Choi, Byung Kwon;Jeong, Suk Jae
    • Journal of the Korea Institute of Military Science and Technology
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    • v.20 no.2
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    • pp.279-288
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    • 2017
  • The Material Transportation Capability Analysis Method in North Korea includes adversary's activities such as destruction of bridge which is one kind of choke points in the road network and surprise attack against resupply march unit. Also, the amount of damage on choke points in the road network and repair time depending on repair unit commitment must be reflected. In this study, a scenario encompassing plausible resupply transportation circumstances while counterattacking into NK will be established. Then, based on such scenario, a simulation model will be established and the result of simulation will be compared to the results of numeric example which has been used in the ROK Army. We demonstrate, through a certain Corps operation area, that the Scenario-based Simulation Model results predict the performance of resupply operation very well. Therefore, it makes sustainment planners and commanders do activities which is suitable for battlefield and should be used in the real situation. It is also a stochastic model.

Analysis of severe accident progression and Cs behavior for SBO event during mid-loop operation of OPR1000 using MELCOR

  • Park, Yerim;Shin, Hoyoung;Kim, Seungwoo;Jin, Youngho;Kim, Dong Ha;Jae, Moosung
    • Nuclear Engineering and Technology
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    • v.53 no.9
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    • pp.2859-2865
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    • 2021
  • One of the important issues raised from the Fukushima-Daiichi accident is the safety of multi-unit sites when simultaneous accidents occur at the site and recently a multi-unit PSA methodology is being developed worldwide. Since all operation modes of the plant should be considered in the multi-unit PSA, the accident analysis needs to be performed for shutdown operation modes, too. In this study, a station blackout during the mid-loop operation is selected as a reference scenario. The overall accident progression for the mid-loop operation is slower than that for the full-power operation because the residual heat per mass of coolant is about 6 times lower than that in the mid-loop scenario. Though the fractions of Cs released from the core to the RCS in both operation modes are almost the same, the amount of Cs delivered to the containment atmosphere is quite different due to the chemisorption in the RCS. While 45.5% of the initial inventory is chemisorbed on the RCS surfaces during the full-power operation, only 2.2% during the mid-loop operation. The containment remains intact during the mid-loop operation, though 83.9% of Cs is delivered to the containment.

Evaluation for conjunctive operation of multi-regional water supply system through risk analysis (위기대응 취약성 분석을 통한 광역상수도 연계운영 평가)

  • Hwang, Jinsoo;Choi, Taeho;Hong, Gonghyun;Lee, Doojin;Koo, Jayong
    • Journal of Korean Society of Water and Wastewater
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    • v.33 no.4
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    • pp.269-279
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    • 2019
  • This study would present a risk analysis method to evaluate stable tap water supply in a multi-regional water supply system and propose a measure for the evaluation of the effect of the conjunctive operation of the multi-regional water supply system using this. Judging from the vulnerability for the crisis response of the entire N. multi-regional water supply system, as compared to the result of Scenario 1 in which no conjunctive pipes were operated, it was found that in Scenario 2, in which conjunctive pipes were partially operated, the vulnerability of crisis response decreased by about 30.6%, and as compared to Scenario 3, the vulnerability of crisis response decreased by 86.2%. In setting a plan for stable tap water supply in N multi-regional water supply system, using the estimated value and the method for the evaluation of the vulnerability of crisis response by pipe, by interval and by line, it is judged that this can be utilized as a basis for the judgment of the evaluation of the operation or the additional installation of conjunctive pipes.

A Chunghae Unit Study on the NCO Effectiveness of Anti-piracy Operation (청해부대 대해적작전의 네트워크작전(NCO) 효과 사례연구)

  • Jung, Wan-Hee
    • Journal of the Korea Institute of Military Science and Technology
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    • v.17 no.6
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    • pp.744-750
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    • 2014
  • In this paper, I have measured NCO(Network Centric Operation) Effectiveness of Anti-piracy Operation at the Chunghae Unit. For quantitative analysis, Network Centric Operations Conceptual Framework(U.S Office of Force Transformation) is applied. In accordance with the framework, the Chunghae unit anti-piracy operation scenario is analysed. The scenario is devided with two case(only voice communication and networking). The element of analysis be composed of the organic information, networking, share-ability, and individual information. As a result of analysis, the individual information of first case(only voice) gets 0.59 points. The other side, second case (networking) gets 1 points. This means that NCO has effect on the Chunghae Unit's mission. In addition, I stated the tactics advantage of NCO related a fighting power.