고에너지물질 비군사화 시설의 후처리 공정 모사 및 열교환기 합성망을 이용한 에너지 최적화

황래문,김현수,오민,문일 한국군사과학기술학회 2021 한국군사과학기술학회지 Vol.24 No.1

The expiration date of high energetic materials(HEM), such as HMX, RDX, TNT, is important. If the expiration date is violated, the expected specification of HEM would not be satisfied which may cause a different conclusion in an urgent situation. As a result, this HEM should maintain fresh conditions which cause the accumulation of waste HEM. If HEM is landfilled during demilitarization, the impact on living organizations is serious. Additionally, landfilling HEM has a possibility of explosion. In this research, the process flow diagram of the demilitarization gas treatment process was simulated while satisfying the law of the environment in Korea. After validation of simulation, it was optimized thermodynamically using Heat Exchanger Network Synthesis(HENs). This study is expected to enhance the energy efficiency of the original facility by suggesting developed designs. This research was supported by Agency of Defense Development NE32 Korea. Thanks to Agency of Defense Development, Korea

한국 환경에 적합한 기동형 수중음향측정체계 운용 개념 연구

도경철,손권,최재용,Dho, Kyeong-Cheol,Son, Kweon,Choi, Jae-Yong 한국군사과학기술학회 2003 한국군사과학기술학회지 Vol.6 No.2

The radiated-noise of combat ship is very important in the point of detection and vulnerability assessment. Therefore several kind of underwater acoustic measurement method has been developed. This paper reviews the various measurement concepts and proposes a procedure to select the better one under consideration of measurement conditions. And this paper recommends the portable drift type, which has vertical line array, as the most efficient measurement method in Korean sea.

배기가스를 고려한 함정의 계절별 적외선 신호 특성에 대한 연구

한국일,김동건,최준혁,김태국,Han, Kuk-Il,Kim, Dong-Geon,Choi, Jun-Hyuk,Kim, Tae-Kuk 한국군사과학기술학회 2013 한국군사과학기술학회지 Vol.16 No.4

This paper is a part of developing a computer code that can be used to generate IR images of a naval ship by considering the emitted and reflected infrared signals. The spectral radiance received by an IR sensor is consisted of the self-emitted component from the ship surface, the reflected component of the solar/sky irradiance at the ship surface, the emitted radiance from the ship surface and the exhaust plume gas, and the scattered radiance by the atmosphere. The plume gas radiance occupies a large part of the emitted radiance from a naval ship in operation. Therefore plume gas radiance must be taken into account when calculating the radiance from a naval ship for reliable IR images. In this paper, IR images of a naval ship with the exhaust gas effect in various environmental conditions are generated by using an exhaust gas prediction model called the JPL model. The contrast radiance (CR) values of the IR images are calculated to analyze the effect of the exhaust gas radiance quantitatively. The results obtained by quantitative analysis show that the IR signatures with the exhaust plume gas are 2.26 times larger than those neglecting the plume gas effect. The effect of the exhaust plume gas is shown to be more eminent in winter than in summer in the daytime.

국방특화연구센터 사업의 운영성과 분석 연구

강성모,양해술,Kang, Sung-Mo,Yang, Hae-Sool 한국군사과학기술학회 2008 한국군사과학기술학회지 Vol.11 No.6

University Research Centers specialized in defense technology(DURCs) were designed to develop fundamental knowledge and to acquire core technologies related to defense development by conducting creative and interdisciplinary research. The centers also have a function of fostering scientists and practitioners possessing defense-oriented cross-disciplinary knowledges. Since the outset of the DURC in 1994, Sixteen DURCs have been funded and eleven DURCs are now in operation. The purpose of this paper is to analyse the operational status and the performance of DURCs and to suggest ideas on improving the effectiveness of the DURC program by comparing with the Korea Excellent Research Center program and the U.S. National Science Foundation(NSF) Engineering Research Center(ERC) program.

과학화 전투훈련장 LVC-체계의 상위 구조 연구

최상영,Choi, Sang-Yeong 한국군사과학기술학회 2008 한국군사과학기술학회지 Vol.11 No.2

The LVC(Live, Virtual, Constructive) system of CTC(Combat Training Center) is at the very cutting edge of modeling and simulation technology, which has become widely accepted an enabler for a new military training transformation. In this paper, the architecture of LVC system is proposed for the Korean brigade-level CTC, and high level operational architecture, system architecture, and technical standard architecture are suggested.

M-추정을 사용한 국방과학기술 수준조사 기술성장모형의 이상치 제거

김장헌,Kim, Jangheon 한국군사과학기술학회 2020 한국군사과학기술학회지 Vol.23 No.1

Technology growth curve methodology is commonly used in technology forecasting. A technology growth curve represents the paths of product performance in relation to time or investment in R&D. It is a useful tool to compare the technological performances between Korea and advanced nations and to describe the inflection points, the limit of improvement of a technology and their technology innovation strategies, etc. However, the curve fitting to a set of survey data often leads to model mis-specification, biased parameter estimation and incorrect result since data through survey with experts frequently contain outlier in process of curve fitting due to the subjective response characteristics. This paper propose a method to eliminate of outlier from a technology growth curve using M-estimator. The experimental results prove the overall improvement in technology growth curves by several pilot tests using real-data in Defense Science and Technology Survey reports.

수리 가능 시스템의 신뢰성 분석 절차 및 사례 연구

이성환,염봉진,Lee, Sung-Hwan,Yum, Bong-Jin 한국군사과학기술학회 2006 한국군사과학기술학회지 Vol.9 No.2

The purpose of this paper is to present reliability analysis procedures for repairable systems and apply the procedures for assessing the reliabilities of two subsystems of a specific group of military equipment based on field failure data. The mean cumulative function, M(t), the average repair rate, ARR(t), and analytic test methods are used to determine whether a failure process follows a renewal or non-renewal process. For subsystem A, the failure process turns out to follow a homogeneous Poisson process, and subsequently, its mean time between failures, availability, and the necessary number of spares are estimated. For subsystem B, the corresponding M(t) plot shows an increasing trend, indicating that its failure process follows a non-renewal process. Therefore, its M(t) is modeled as a power function of t, and a preventive maintenance policy is proposed based on the annual mean repair cost.

2.4GHz대역 ZigBee 송수신기를 사용한 과학화 전투훈련 시스템에서 최소송신전력과 간섭에 관한 연구

곽현상,유호준,김영호,전상현,김종헌,이찬주,임승찬,Kwak, Hyun-Sang,Yoo, Ho-Joon,Kim, Young-Ho,Chun, Sang-Hyun,Kim, Jong-Heon,Lee, Chan-Joo,Lim, Seung-Chan 한국군사과학기술학회 2008 한국군사과학기술학회지 Vol.11 No.6

In this paper, interference analysis has been performed between RF receiver and transmitters on each soldier for Multiple Integrated Laser Engagement System(MILES) which are following ZigBee standard. In order to obtain minimum transmit power without interference, 1% Packet Error Rates(PER) from 14 transmitters attached on a soldier to a receiver are measured with the scenarios for simple transmitting and receiving network configuration and for repeating network configuration. Based on this transmit power, the available distance for interference free among soldiers is simulated using Spectrum Engineering Advanced Monte Carlo Analysis Tool(SEAMCAT). Later scenario gives the benefit of 10dB lower transmit power, smaller and lighter power source, and better activity of trainee.

스캔라인 알고리즘을 이용한 대화력전 임기표적의 실시간 영역 결정

전기윤,Jeon, Gi-Yoon 한국군사과학기술학회 2007 한국군사과학기술학회지 Vol.10 No.2

The CF(Counter-fire) is neutralizing enemy's all command control systems and fire support elements. It will weaken a battle continuous ability and an intension to fight. At the beginning of the CF is obtaining locations of targets using various detection assets. CF command center processes acquired target information and send it to attacking equipments. The targets are classified into two classes, preplanned target and target of opportunity The target of opportunity is potential threaten, so it needs to take a immediate and exact process for determining location of target of opportunity. This paper proposes the real-time processing algorithm for offensive weapons to strike target of opportunity, and presents the result of its performance.

동적 구문처리기 소프트웨어 적용을 통한 대화력전 수행체계 연동의 유연성 향상 방안

홍원의,Hong, Won-Eui 한국군사과학기술학회 2008 한국군사과학기술학회지 Vol.11 No.1

The counter-fire operation system performs its mission exchanging information with other related systems such as command & control systems and military information systems. In the process of exchanging information, the counter-fire operation system uses a type of data message which contains exchange data information in the format of KMTF. The requirement of data exchange of count-fire operation will continue to evolve. But the EDX(External Data eXchange) configuration item of the current counter-fire operation system can not effectively cope with the variation of data exchange requirements due to its fixed software structure. In the paper, a solution for improving flexibility of external data exchange in counter-fire operation system is proposed.