• 한국군사과학기술학회지
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• 제18권6호
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• pp.755-761
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• 2015

Satellite Air-defence Warning System receives the aircraft/ballistic track information and air defense control command obtained from Master Control & Reporting Center (MCRC) and Air Missile Defence Cell (AMD Cell) Systems. It consists of terminal and control system to propagate track information and air defense control command control via the military satellite communications. In this paper, there were described track information, air defense control command, the frame structure of modem to transmit a voice information and modulation/demodulator design, network synchronization methods via the satellite network.

• 한국군사과학기술학회지
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• 제21권1호
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• pp.47-60
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• 2018

In this paper, we proposed a method for eliminating aiming error of unguided anti-tank rocket using improved target tracking. Since predicted fire is necessary to hit moving targets with unguided rockets, a method was proposed to estimate the position and velocity of target using fire control system. However, such a method has a problem that the hit rate may be lowered due to the aiming error of the shooter. In order to solve this problem, we used an image-based target tracking method to correct error caused by the shooter. We also proposed a robust tracking method based on TLD(Tracking Learning Detection) considering characteristics of the FCS(Fire Control System) devices. To verify the performance of our proposed algorithm, we measured the target velocity using GPS and compared it with our estimation. It is proved that our method is robust to shooter's aiming error.

• 한국전산유체공학회지
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• 제20권1호
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• pp.99-104
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• 2015

Aero-optic phenomena cause the image position displacement on an imaging plane of the airborne optical/IR systems. Particularly, the aero-optic boresight error(BSE) is important factor for homing, positioning and aiming applications of hypersonic flight interceptor missile. In this paper, an estimating method of aero-optic BSE for a hypersonic flight vehicle is studied. A ray tracing method and a transform method of refractive index fields from flow density fields are combined with computational fluid dynamics(CFD) method.

• 한국산학기술학회논문지
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• 제20권9호
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• pp.488-494
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• 2019

양산되어 군에 전력화되는 정밀 유도무기의 경우, 장기 저장된 이후 사격시험을 수행함으로써 최종 성능을 확인할 수 있는 특성을 가지고 있다. 현재 군에서 운용되고 있는 ${\bigcirc}{\bigcirc}$ 유도무기 또한 군 전력화 이후 실사격 시험을 통하여 유도무기의 성능 및 신뢰도를 지속적으로 확인하고 있다. 특히, '00년 군 주관 실 사격시험에서는 유도무기 발사관 전방덮개조립체 구성품인 '링, 지지용'이 유도무기가 발사되는 과정에서 추진 날개에 걸려 함께 이탈한 결과가 확인되었고, 이는 추진 날개 전개를 방해하여 유도무기 비행 성능에 영향을 주었다. 이 결과를 기반으로 기존 실 사격시험을 성공한 유도무기 발사관을 조사한 결과, '링, 지지용'의 발사관 이격 현상이 확인되어 '링, 지지용' 이격/이탈 현상에 대한 근본적인 해결 방안 수립 필요성을 인지하게 되었다. 본 연구는 실 사격시험 결과로부터 도출된 유도무기 발사성능 개선사항을 제시하고, 이를 ${\bigcirc}{\bigcirc}$ 유도무기에 적용하여 최종적인 발사성능 개선 효과 및 시험결과를 소개한다.

• 한국군사과학기술학회지
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• 제26권1호
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• pp.64-71
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• 2023

In the recent defence industries, it is required to develop the small and low cost embedded systems for guided missiles. According to the characteristics of guided missiles, the mission is conducted with multiple phases, which include a squib activation phase. By considering the unexpected squib activation, the squib system should be disabled after the launch of a guided missile. Therefore, the squib system needs to include the functions of the safe ignition and status check. This paper presents the squib ignition and status check circuits design for the compact embedded systems in guided missiles. Validation results show that for the functions of the squib ignition and status check, the presented circuits design performs well. The designed circuits also were implemented with various electronic devices and validated by the ground and flight tests.

• 산업경영시스템학회지
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• 제39권1호
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• pp.98-104
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• 2016

With the development of modern science and technology, weapon systems such as tanks, submarines, combat planes, radar are also dramatically advanced. Among these weapon systems, the ballistic missile, one of the asymmetric forces, could be considered as a very economical means to attack the core facilities of the other country in order to achieve the strategic goals of the country during the war. Because of the current ballistic missile threat from the North Korea, establishing a missile defense (MD) system becomes one of the major national defense issues. This study focused on the optimization of air defense artillery units' deployment for effective ballistic missile defense. To optimize the deployment of the units, firstly this study examined the possibility of defense, according to the presence of orbital coordinates of ballistic missiles in the limited defense range of air defense artillery units. This constraint on the defense range is originated from the characteristics of anti-ballistic missiles (ABMs) such as PATRIOT. Secondly, this study proposed the optimized mathematical model considering the total covering problem of binary integer programming, as an optimal deployment of air defense artillery units for defending every core defense facility with the least number of such units. Finally, numerical experiments were conducted to show how the suggested approach works. Assuming the current state of the Korean peninsula, the study arbitrarily set ballistic missile bases of the North Korea and core defense facilities of the South Korea. Under these conditions, numerical experiments were executed by utilizing MATLAB R2010a of the MathWorks, Inc.

• 해양안보
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• 제1권1호
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• pp.241-271
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• 2020

극초음속 미사일은 전 세계에서 가장 많은 관심을 받는 군사기술이다. 러시아, 중국, 미국이 주도하고 있고 다른 나라 역시 경쟁적으로 동참하고 있다. 극초음속 미사일은 탄도미사일과 순항미사일의 장점을 모두 혼합한 미사일로 기존 방어체계로는 요격이 쉽지 않다. 해군은 기술군으로 과학기술 발전은 해양전략에 많은 영향을 미쳐왔다. 해양전략의 핵심은 해양통제다. 이는 점령보다 해양의 사용권리에 대한 문제이며 확보는 수단이고 행사하는 것이 그 목적이다. 극초음속 미사일은 해양통제의 확보 면에서 제한요인으로 작용한다. 극초음속 미사일의 빠른 속력과 강력한 파괴력은 요격이 어려울 뿐만 아니라 단 한발에도 손상통제가 의미없는 수준의 피해가 발생한다. 이로 인해 해양거부능력이 지리적, 질적으로 향상됨에 따라 해양통제 달성이 어려워 질 것이다. 극초음속 미사일은 해양력투사/방어, 해상교통로 공격/방어라는 해양통제 행사면에서는 각각 기회요인과 제한요인으로 동시에 작용한다.

• International Journal of Aeronautical and Space Sciences
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• 제3권2호
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• pp.67-75
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• 2002

In the course of missile system design, jet plume impingement is encountered in designing airframe as well as launchers, requiring careful investigation of its effect on the system. In the present paper, recent works on such topic are presented to demonstrate usefulness of CFD results in helping design the hardware. The jet impinging flow structure exhibits such complex nature as shock shell, plate shock and Mach disk depending on the flow parameters. The main parameters are the ratio of the jet pressure to the ambient pressure and the distance between the nozzle and the wall. In the current application, the nozzle contour and the pressure ratio are held fixed, but the jet impinging distance is varied to illuminate the characteristics of the jet plume with the distance. The same methodology is then applied to a complex vertical launcher system (VLS), capturing its flow structure and major design parameter. These applications involving jets are thus hoped to demonstrate the usefulness and value of CFD in designing a complex structure in the real engineering environment.

• 한국군사과학기술학회지
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• 제9권3호
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• pp.41-47
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• 2006

Naval combat system is total management system integrating a ship and several weapon system functions. For the mission of a ship, naval combat system manages features and constraints of each weapon system. Proper treats of each weapon system's conditions guarantee effective performances of naval combat system. In this paper, the relationship of anti-air weapon system's on board position and self-defence effectiveness against anti-surface missiles is studied

• 한국국방경영분석학회지
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• 제27권2호
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• pp.134-148
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• 2001

In this paper, air-defense simulation model, called "DADSim", will be introduced. DADSim(Distributed Air Defense Simulation Model) was developed by Modeling&Simulation Lab of K.N.D.U.(Korea National Defence Univ) Weapon Systems Department. This model is an analysis-purpose model in the engagement-level. DADSim can simulate not only the global air-defense or Korean Peninsula but also the local air-defense or a battle field. DADSim uses the DTED(digital terrain elevation data) LeveII it for the representation of peninsula terrain characteristics. The weapon systems cooperated in the model are low/medium-range missile systems such as HAWK, NIKE, SAM. DADSim was designed in the way of object-oriented development method, implemented by C++ language. The simulation view is an event-sequenced object-orientation. For the convenience of input, output analysis, GUI(Graphic User Interface) of menu, window, dialog box, etc. are provided to the user, For the execution of DADSim, Silicon Graphic IRIX 6.3 or high version is required. DADSim can be used for the effectiveness analysis of­defence systems. Some illustrative examples will be shown in this paper.