• Proceedings of the Korea Society for Simulation Conference
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• 2003.06a
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• pp.31-35
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• 2003

In the late 1990s, ROK Army started developing a simulation model(ChangJo21) for division/corps level battle command training and finished it successfully. The CJ2l model provides realistic representation of Korean characteristics in doctrine, weapon systems, terrain, and climate etc. The successful development of CJ2l implanted us with confidence on high-technology model development and this has been our motive for development of JeonToo21 for battalion/regiment level battle command training and other war-game models like Hwarang21 (Rear Area Ops. Model) and Vision21 (Division Combat Analysis Model). Eventually, ROK Army was able to establish M&S system by echelons, from battalion to corps. Moreover interoperability between ROK-US simulation systems are on the progress. In this paper, we introduce recently developed 3 war-game simulation models and mention on the future directions of ROK Army Modeling & Simulation.

• Proceedings of the Korea Information Processing Society Conference
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• 2019.10a
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• pp.153-155
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• 2019

국방무기체계 분야 중 단일 센터에 대규모 분산시스템을 구성하는 경우 신속한 데이터 처리를 위해 통신 미들웨어로 사용되는 DDS의 패킷을 튜닝하여 사용하고 있다. 하지만 향후 국방무기체계는 생존성 보장을 위해 분산시스템의 장소를 주/예비 센터로 이원화하면서 센터간에도 신속한 데이터 동기화 및 비상시 OO초 내 센터 임무전환까지 함께 요구하고 있다. 따라서 단일 센터에서 적용한 DDS 패킷 전송 방식을 WAN 환경에 적용 시 데이터 송수신간 패킷의 순서가 바뀌는 현상이 발생하여 데이터 공유가 제한될 수 있다. 본 연구에서는 이와같은 제한사항을 극복하기 위해 DDS를 적용한 LAN 구간의 기존 성능을 유지하면서 WAN 구간 데이터의 신뢰성 보장을 위한 TCP/IP 기반의 WAN Sync 설계를 제시하였다.

• Journal of the Korea Institute of Information and Communication Engineering
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• v.15 no.4
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• pp.773-779
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• 2011

The width of a submarine's turbulent wake, using Shear-free and Ship wake theory, is proportional to $x^n,\;({\frac{1}{5}}{\leq}n<{\frac{1}{2}})$ If we assume submarine's length, width, velocity are 65m, 6.5m, 6kts respectively, and the minimum diffusion of turbulent wake ; ${\infty}\;x^{1/5}$, the width of wake behind the submarine is about 20m at 1.2km, 30m at 15km when there is no breaking waves on the sea surface. However, in the case of breaking waves, it is very limited to identify submarine's wake on the sea surface because wind generated turbulent wake has higher turbulent kinetic energy than that of submarine's wake. As a result, there is a high possibility to detect submarine's wake on the sea surface in the shallow water such as the Yellow-Sea using a proper detection method such as SAR. This means that in anti-submarine operations, non-acoustic sea surface serveillance applied turbulent wake will be very effective way to detect a submarine in near future. To do this we have to develop exact theory of submarine's turbulent wake above all.

• Journal of Cadastre & Land InformatiX
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• v.46 no.2
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• pp.79-92
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• 2016

The development to the high quality of life society requirers not only economic development but also high level of capacity in disaster management which can address the disaster promptly and ready for man made disaster such as fires, traffic accidents, stopping the function of infrastructure in energy and telecommunication sectors. In this research a disaster management system which utilize cadastral data and cadastral sturcure has been p roposed a s a m ean o f enhancement of disaster management capacity. It is expected that to make use of all cadastral information in every disaster management steps, disaster risk information will be calculated and provided by parcel unite and the cadastral organization will participate to disaster management utilizing cadastral organization's nation wide structural network and skilled manpower by adopting parcel-based disaster management system.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.18 no.4
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• pp.446-458
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• 2017

In order to make a decision about the acquisition of command control communication weapon systems considering the client's technology level requirements, the improvement of the domestic technology level and security of core technology, the person in charge can perform technology evaluation/analysis based on command control communication weapon system patent data. As a method of collecting such patent data, we can collect the patent data of government-designated (Defense Acquisition Program Act Article 35) companies (11 Major defense companies/9 General defense companies) through the Korea Intellectual Property Rights Information System (KIPRIS) of the Korean Intellectual Property Office (KIPO) In this way, we collected 1,526 patents and 134 International Patent Classification (IPC) types through the KIPRIS of the KIPO. Based on these data, we performed three types of analysis, General information analysis, Principal Components Analysis (PCA) and Network analysis, and extracted 27, 19 and 13 IPC types from them, respectively. Based on the above three analysis results, we confirmed 8 IPC types (F41A, F41G, G06F, G01S, H04B, H04L, H04M and H04W) as the key technologies and representative technology fields of domestic communication-electronics defense companies.

• Proceedings of the Korean Institute of Navigation and Port Research Conference
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• 2023.11a
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• pp.199-201
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• 2023

VDES는 2015년 ITU-R M.2092-0가 발행된 이후로 다년간 기술 개발 및 개정 작업을 통해 2022년에 ITU-R M.2092-1이 발행되었다. 2026년 1월부터 VDES를 필수 규제 체계에 도입하기 위해 IMO는 2021년 MCS 103회의를 시작으로 NCSR 10에서 SOLAS 4장 및 5장의 수정안과 성능 기준 및 지침 개발을 논의하였고 24년 6월이면 작업이 완료될 것으로 예상된다. 자율운항선박 과제에서는 VDES를 이용하여 자율운항 선박의 안전관련 필수 정보들을 육상-선박 뿐만 아니라 선박-선박 연결에서도 데이터 교환을 할 수 있도록 VDES 시스템을 통신 방식 중 하나로 적용하여 개발하고 있으며 최신의 VDES 관련 표준을 유지할 수 있도록 지속적인 표준 분석 및 시스템 적용을 수행하고 있다. 본 논문에서는 VDES의 MAC 계층 설계를 위해 IEC에서 개발 중인 시험 표준을 분석하고 VDES 개발 시제에 적용하여 검증 및 평가를 수행하였다.

• Journal of the Korea Society for Simulation
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• v.29 no.1
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• pp.47-55
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• 2020

This paper presents a real-time autonomous computation of shot numbers and aiming points against multiple soft targets on grounds by applying an unsupervised learning, k-mean clustering and Monte carlo simulation. For this computation, a 100 × 200 square meters size of virtual battlefield is created where an augmented enemy infantry platoon unit attacks, defences, and is scatted, and a virtual weapon with a lethal range of 15m is modeled. In order to determine damage types of the enemy unit: no damage, light wound, heavy wound and death, Monte carlo simulation is performed to apply the Carlton damage function for the damage effect of the soft targets. In addition, in order to achieve the damage effectiveness of the enemy units in line with the commander's intention, the optimal shot numbers and aiming point locations are calculated in less than 0.4 seconds by applying the k-mean clustering and repetitive Monte carlo simulation. It is hoped that this study will help to develop a system that reduces the decision time for 'detection-decision-shoot' process in battalion-scaled combat units operating Dronebot combat system.

• Journal of the Korea Society for Simulation
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• v.20 no.3
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• pp.79-88
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• 2011

In most existing warships combat simulation system, the tactics of a warship is manipulated by human operators. For this reason, the simulation results are restricted due to the stereotype of human operators. To deal with this, we have employed the genetic algorithm for supporting the evolutionary simulation environment. In which, the tactical decision by human operators is replaced by the human model with a rule-based chromosome for representing tactics so that the population of simulations are created and hundreds of simulation runs are continued on the basis of the genetic algorithm without any human intervention until to find emergent tactics which shows the best performance throughout the simulation. This paper proposes an evolutionary tactics generation methodology for the emergent tactics in many-to-many warship combat simulation. To do this, 3:3 warship combat simulation tests are performed.

• Journal of the Korea Institute of Military Science and Technology
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• v.17 no.1
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• pp.71-81
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• 2014

It is an important issue to evaluate the effectiveness of chemical warfare through modeling and simulation(M&S) technology. In this paper, we propose the M&S methodology and environment for the chemical warfare for effectiveness analysis. In detail, for modeling perspective, we propose three fundamental component models according to their behaviors, which are a chemical weapon, a detecting device system, and an engaging unit system. Among proposed models, the chemical weapon and the detecting device system models are represented by engineering-level system models, whereas the engaging unit system model are described as an engagement-level system model. For simulation perspective, we apply a hybrid simulation environment using High Level Architecture (HLA) to interoperate with the proposed engineering and engagement-level models. The proposed M&S methodology and environment enables to evaluate the effectiveness of the chemical warfare system considering the doctrines, the performance of device or weapon, and weather factors. To verify the efficiency of the proposed methodology and environment, we experimented three categorized case studies, which are related with those considering factors.

• Journal of the Korea Society for Simulation
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• v.23 no.4
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• pp.75-83
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• 2014

Most warship combat systems inquire human operator to control several sensor and another equipments as well as decision-modeling. For this reason, many researches with multi-agent based M&S (Modeling and Simulation) have been increasingly conducted. However there cannot find any researches of M&S based analysis for anti-submarine warfare that requires a high level of mission complexity between multiple platforms. In this research, we have been developed various combat platform models such as warship, submarine and helicopter, etc. In order to apply the multi-agent-based M&S technology to the anti-submarine warfare i.e. a HVU (High Value Unit) escort mission scenario. Then we have successfully analyzed the measures of effectiveness according to the different tactics and different situations. In future, the defence engineer maybe employ our methodology and tools to analyze actual tactical problem by simply inserting actual data into our agent model.