• Defense and Technology
• /
• no.3 s.277
• /
• pp.10-17
• /
• 2002

현재 우리 국방예산은 점점 감소되고 있으며 군구조 일부 통합되어 축소 지향적으로 가고 있는 것으로 볼 때 국방자원의 감소는 시대적인 추세라고 볼 수 있다. 따라서 HLA를 기반으로한 무기체계획득, 교육/훈련체계의 획기적인 개선의 필요성은 크게 증가되고 있다. 더구나, 최근 인공지능기술을 포함한 각종 정보 통신기술의 급격한 발전에 따라 이러한 시뮬레이션/시뮬레이터 개발비용이 감소되고 있는 것은 이런 분야에 대한 방위산업의 활성화에 크게 도움을 줄 수 있을 것으로 판단된다.

• Proceedings of the Korea Society for Simulation Conference
• /
• 2002.05a
• /
• pp.103-108
• /
• 2002

본 연구는 이산 사건 시스템 형식론(DEVS: Discrete Event System Specification)을 이용한 가상전장 모델링 및 시뮬레이션 방법론을 제안한다. 기존 군체계에 관련된 모델링 기술은 물리적 모델링, 비쥬얼 모델링, 또는 개념적 모델링 등 개별 기능중심의 단편적 플랫폼 모델링에 그치고 있으며, 무기체계 분석 시뮬레이션도 개별 단위체 중심으로 평가되어져서, 다양하고 종합적인 그리고 상호운영성과 재사용성 등을 고려한 통합 모델링 및 시뮬레이션 환경을 제공하지 못하는 단점을 갖는다. 따라서 본 논문에서는 개별 전투병력에서부터 첨단 무기체계에 이르는 다양한 전장 요소들을 계층 구조적으로 통합함으로써 장에서 발생될 수 있는 개별 전투병력의 미시적 행동 특성뿐 아니라 분대/중대/대대/사단급 단위의 거시적 전략/전술에 대한 묘사까지도 가능한 가상전장 모델링 및 시뮬레이션 환경을 제안한다. 제안된 방법론은 분대 단위의 가상 전장 환경에 대한 사례연구를 통해 검증하였으며, 향후 연구로는 대단위 가상전장에 대한 묘사를 위한 HLA 분산 시뮬레이션 기술의 적용에 대한 연구가 필요할 것이다.

• Proceedings of the Korea Society for Simulation Conference
• /
• 2002.05a
• /
• pp.53-59
• /
• 2002

본 연구는 이산 사건 시스템 형식론(DEVS: Discrete Event System Specification)을 이용한 가상전장 모델링 및 시뮬레이션 방법론을 제안한다. 기존 군체계에 관련된 모델링 기술은 물리적 모델링, 비쥬얼 모델링, 또는 개념적 모델링 등 개별 기능중심의 단편적 플랫폼 모델링에 그치고 있으며, 무기체계 분석 시뮬레이션도 개별 단위체 중심으로 평가되어져서, 다양하고 종합적인 그리고 상호운영성과 재사용성 등을 고려한 통합 모델링 및 시뮬레이션 환경을 제공하지 못하는 단점을 갖는다. 따라서 본 논문에서는 개별 전투병력에서부터 첨단 무기체계에 이르는 다양한 전장 요소들을 계층 구조적으로 통합함으로써 전장에서 발생될 수 있는 개별 전투병력의 미시적 행동 특성뿐 아니라 분대/중대/대대/사단급 단위의 거시적 전략/전술에 대한 묘사까지도 가능한 가상전장 모델링 및 시뮬레이션 환경을 제안한다. 제안된 방법론은 분대 단위의 가상전장 환경에 대한 사례연구를 통해 검증하였으며, 향후 연구로는 대단위 가상전장에 대한 묘사를 위한 HLA 분산 시뮬레이션 기술의 적용에 대한 연구가 필요할 것이다.

• Korean Chemical Engineering Research
• /
• v.50 no.2
• /
• pp.292-299
• /
• 2012

We made 8 wt% silica dispersion system with fumed silica and photo curable acrylic monomer by beads mill process. These dispersions could be applied in organic/inorganic hybrid coating systems. These dispersions could be applied in organic/inorganic hybrid coating systems. The 4 species of photo curable acrylic monomer which was presence of hydroxyl group, different solubility parameter, and different molecular size were used in the silica dispersions. Stability of polar solvent, isopropyl alcohol, in silica dispersions was investigated. We investigated the stability of silica dispersions by using steady-state and dynamic rheology. As the monomer has hydroxyl group increased in mono and binary monomer silica dispersions, they showed non flocculated stable sol (loss modulus (G")> storage modulus (G')). When polar solvent IPA was added into slightly flocculated silica dispersions, they changed to non flocculated stable sol.

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

• Journal of the Korea Institute of Military Science and Technology
• /
• v.11 no.4
• /
• pp.46-58
• /
• 2008

Naval combat management system is a kind of complex weapon systems performing naval ship's warfare mission by integrating various types of system including sensor systems, weapon systems and many kinds of communication system. Recently, there are many studies to apply commercial high-level communication middleware to naval combat system development to integrate and interoperate various kinds of heterogeneous on-board systems efficiently. An initial discovery mechanism is required for application modules to start communication with their relevant modules to apply middlware technology in developing naval combat system, which is characterized by large-scale, complex and real-time system. This paper suggests a fast hybrid discovery mechanism which combines static and dynamic discovery mechanism and confirms its adaptability by an experiment on testing environment.

• Journal of the Korea Society for Simulation
• /
• v.22 no.2
• /
• pp.73-83
• /
• 2013

This paper presents design and implementation of the monitoring system for the distributed simulation of underwater warfare. As importance of defense modeling and simulation(M&S) has raised, Simulation-Based Acquisition(SBA) was authorized for an obligatory process in the development process of weapon systems. Yet, it requires tremendous resources to develop a large-scale simulation system that describes complex and broad battlefields. Therefore, an approach of the distributed system was devised to develop a new simulation system combining legacy simulators that were developed for confined purpose and sole operations. High-Level Architecture(HLA) of distributed systems is a standardized protocol by IEEE for the distributed simulation system and Run-Time Infrastructure(RTI) is an implementation of HLA to structure efficient distributed systems. The main objective of this paper is to derive appropriate monitoring factors for underwater warfare simulation, design and implementation of the monitoring system to analyze the factors based on HLA/RTI.

• Journal of the Korea Society for Simulation
• /
• v.23 no.2
• /
• pp.57-64
• /
• 2014

This paper proposes a framework to construct the synthetic battlefield based aviation engagement simulation model for the distributed system. The proposed framework has the synthetic battlefield in the HLA (High Level Architecture)/RTI (Run-Time Infrastructure) based distributed system to reflect environmental effects into the aviation engagement simulation model. In an aviation engagement, the environment affects weapon systems such as detection and movement. Therefore, environmental effects are required to be reflected in the simulation. However, former researches are inadequate for complex operations of weapon systems that are requirements of the engagement simulation. Thus, the construction of the engagement simulation system of which reflects environmental effects based on environmental data is still difficult. The main objective of this paper is to propose a framework to solve the difficulty and constructs an example system based on the proposed framework.

• Convergence Security Journal
• /
• v.24 no.2
• /
• pp.175-180
• /
• 2024

Future warfare is evolving with advanced science and technology, introducing a variety of unmanned and manned combat systems. These systems generate and exchange massive amounts of information, challenging current tactical communication systems as a foundation for future communication infrastructure. To analyze the information distribution capability of the Army TIGER corps, this paper examines four scenarios: standalone ground network operation, integrated network operation, load distribution, and error recovery. Utilizing M&S results, we highlight the potential of a multilayer integrated command and control network, incorporating ground, air, and space networks, to enhance the reliability and stability of the overall communication network.

• Journal of the Korea Academia-Industrial cooperation Society
• /
• v.21 no.12
• /
• pp.339-345
• /
• 2020

In the field of defense, one-shot devices such as missiles are stored for a long period of time after they are manufactured, so it is essential to predict their storage life. A study was conducted to find the shelf life of a Li-ion battery used in one-shot devices. To do this, a Li-ion battery that has been used in weapon systems for more than 5 years was secured. A non-functional test was performed on the battery to check for external changes or failures. After the non-functional test, a discharge test was performed to measure the performance after storing it. Through the test, the performance was checked, including the initial charging voltage, discharge time, and battery temperature, and the trend of the change was identified. An F-test, One-way ANOVA, and regression analysis were performed to verify the aging, and the shelf life of the battery was estimated by an approximation formula that was derived through a regression analysis. As a result of the ANOVA, the p-value was less than the reference value of 0.05, and the performance of the battery decreased by more than 15% after a certain period of time. This change is assumed to result from the change in physical properties of the lithium polymer cell.