• 한국정밀공학회지
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• 제33권10호
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• pp.781-787
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• 2016

We introduce FEST (Flight Environment Simulation Test) procedures for precise guided missiles to reliably improve systems. Flight vibration specification was established based on power spectral density curves calculated from flight test data of a high speed precise guided missile. A FEST pre-profile was developed according to flight vibration specification and delivered to a precise guided missile assembly. Vibration responses were measured by installing accelerometers on electronic components vulnerable to dynamic forces. The FEST profile was adjusted by comparing the vibration responses and the flight vibration specification. Subsequently, the FEST profile was repeatedly modified through trial and error, because the responses were similar to the flight environment. The modified FEST profile enabled performance testing of assembled precise guided missiles under simulated flight conditions on the ground, where unexpected errors could be corrected before the flight tests, leading to cost and risk reduction in the development of the precise guided missile system.

• 한국멀티미디어학회논문지
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• 제23권8호
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• pp.1066-1074
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• 2020

High Level Architecture/Run-Time Infrastructure (HLA/RTI) is used to connect individual simulators on networks in order to interoperate heterogeneous simulators. In defense domain, Ship Air Defense Model (SADM) and Extended Air Defense Simulation (EADSIM) are two of most advanced simulation tools. To interoperate these SADM and EADSIM, this paper attempts to use HLA/RTI that helps to support a Composite Combat Mission Planning Simulation Environment (CCMPSE). The CCMPSE allows us to analyze a group of simulations for comprehensive and accurate experiments. For the first time, this paper analyzes guided missile simulations in EADSIM and SADM by comparing related simulation models in their parameters and considerations. It presents characteristics of these models in view of guided missile simulation perspectives. For the contributions of this paper, it provides insights to select guided missiles between SADM and EADSIM on the CCMPSE according to specific simulation purposes.

• 한국멀티미디어학회논문지
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• 제22권8호
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• pp.930-939
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• 2019

High-Level Architecture(HLA)/Run-Time Infrastructure(RTI) are standards for distributed simulation systems and offer a technology to interconnect them and form one single simulation system. In defense domain, M&S is the only way to prove effectiveness of weapon systems except for Live Fire Testing (LFT). This paper focuses on guided missile simulations in weapon systems for engagement analyses and proposes the integrated flying vehicle model that is based on HLA/RTI. There are a lot of missiles in real world; therefore, we should develop each missile models in M&S in order to apply battlefield scenarios. To deal with the difficulties, in this paper, firstly, I classify these missiles into three models: ballastic, cruise, and surface-to-air missile models, and then I design each missile model and integrates them into a single model. This paper also offers a case study with my integrated flying vehicle model. At the conclusion, this paper presents contributions of this paper.

• 대한전기학회:학술대회논문집
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• 대한전기학회 1993년도 하계학술대회 논문집 A
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• pp.421-423
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• 1993

A real time simulation is an effective tool for use in design, performance evaluation, and testing of the vehicle dynamic system. An alternate approach is to use a computer system designed specifically to provide an integrated simulation environment in which all aspects of hardware-in-the-loop simulation task have been taken into account.

• 한국시뮬레이션학회논문지
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• 제28권2호
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• pp.131-137
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• 2019

현대전이 내전과 대테러전과 같은 국지전 양상으로 변화하면서, 탐색기를 포함한 정밀 유도무기의 운용 비중이 점점 증가하고 있다. 영상탐색기는 상대적으로 저가이며, 다양한 운용환경에 적용이 가능하다. 다만 유도무기에 적용되는 영상추적기술은 유도탄의 비행 환경 하에서 표적 추적을 수행해야하므로 상당히 고난이도의 기술이 요구된다. 그 중 유도탄의 롤은 다른 거동에 비해 탐색기 영상에 큰 변화를 주게 되어 영상 추적 성능을 크게 저하시킬 수 있다. 롤은 외란 및 비행 제어 오차로 항상 발생할 수밖에 없으나, 영상 추적 및 체계 성능에 영향을 주지 않는 수준을 판단하여 구성품의 오차 관리를 해야 한다. 하지만 표적의 영상 특성 및 영상 추적기의 높은 비선형성으로 단순한 기준으로 성능 예측을 한다는 것은 매우 어려운 일이다. 본 연구에서는 영상탐색기가 적용된 정밀유도무기의 M&S 환경을 구축하고, 유도탄의 롤 거동이 영상 추적 및 체계 성능에 미치는 영향을 분석하였다. 또한 오차 분석을 통해 유도무기 성능보장을 위해 요구되는 구성품의 규격을 도출하였다.

• 한국국방경영분석학회지
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• 제23권1호
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• pp.1-13
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• 1997

This research investigates a kill probability model for the performance evaluation of guided missile system, and also develops the user interface implementation for the output of the model based on the visual object-oriented programming application. This paper describes in detail the methodology for the kill probability attained by a missile warhead detonating near an airborne target. The major simulation events used in this research are missile guidance homing point, burst points, and kill mechanism(direct kill, blast kill and fragment kill). For the user interface, we also design and implement the visualization system that can show the graphic style of the kill probability attained by the model. This research will bridge the gap between the sophisticated kill probability model and users who want to see the results interactively with visualization, which can benefit many of other military systems. Some examples are shown, but these will be improved to be better with visual simulation which can visualize all the simulation process of the model.

• 한국시뮬레이션학회논문지
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• 제30권1호
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• pp.65-73
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• 2021

일반적으로 유도탄 정비의 핵심적인 군수지원요소는 수리부속 재고수량과 정비 소요시간이며, 본 연구는 정비 소요시간과 가동률 간의 상관관계 영향을 분석하였다. 본 연구의 목적은 하푼 유도탄 정비인력 기술수준을 고려하여 정비팀을 분류하고 정비 소요시간 변화에 따라 유도탄 가동률에 미치는 영향을 분석하여 정량적인 분석 결과를 제시하는 것이다. 먼저, 하푼 유도탄에 대한 정비데이터와 정비 소요시간을 측정한 데이터를 바탕으로 실제 유도탄 정비절차와 유사한 시뮬레이션 모델을 구성하고 결과값을 분석하였다. 정비인력 기술수준을 고려하여 정비팀을 구성하였을 때, 전문성이 높은 팀일수록 정비 소요시간이 단축되었으며 가동률에 미치는 영향이 크다는 것을 시뮬레이션 결과값을 통해 확인할 수 있었다. 이러한 정량적 분석결과값은 유도탄 정비인력 구성 및 운영방안에 대한 정책결정에 기여할 수 있을 것이다.

• 한국군사과학기술학회지
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• 제4권2호
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• pp.138-146
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• 2001

The guided missile carries its own tracking radar to detect its target under noisy environments. The enemy warship uses the anti-missile electric-countermeasure(ECM) technique, such as chaff or decoy, so that the approaching guided missile could not destroy it. In this paper we propose the identification algorithm of a target signal when the enemy warship uses the chaff and decoy to deceive the guided missile. In the proposed scheme the mean square errors(MSE) between the received signals and the reference decoy signal, and between the received signals and the reference chaff signal are calculated. Then, the received signal which results in the maximum MSE is regarded as a warship signal. The performance of the proposed algorithm is verified through the computer simulation.

• 한국군사과학기술학회지
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• 제17권4호
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• pp.404-412
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• 2014

We proposed a design method for squib current supply & interlock circuits in guided-missile fire control systems. In order to design squib current supply circuits, various missile squib loads including line resistance and squib devices have to be considered in advance minimizing probability of redesign of circuits and reducing the development cost by implementing the most proper squib current supply circuit. Also, we presented a hardware interlock logic instead of the commonly used software safety logic to improve the safety of guided-missile fire control systems. The proposed squib interlock circuit enhances safety requirements of guided-missile fire control systems. We confirmed that simulation and measurement results of the proposed design method are the same as theoretical analysis results.

• 한국시뮬레이션학회논문지
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• 제24권4호
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• pp.43-49
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• 2015

탐색기 적용 전술유도무기의 탐색기는 전술유도무기 개발 간 제한된 직경과 무게로 설계된다. 이러한 경우, 하드웨어 특성에 의해 탐색기 시야각, 분해능, 추적 알고리즘 등의 탐색기 성능에 제한이 존재하게 되고, 이로 인해 최대 표적포착 가능거리가 정해지게 된다. 장사거리용 전술유도무기의 경우 최대 표적포착 가능거리 이전까지는 INS 순수항법 또는 GPS/INS 통합항법으로 항법 유도비행을 수행하는데, INS 순수항법은 비행시간이 증가함에 따라 항법성능이 급격하게 감소하고, GPS/INS 통합항법의 경우 재밍상황에서 항법성능이 급격하게 감소한다. 본 논문에서는 앞서 언급한 최대 표적포착 가능거리와 항법장치 성능등 다양한 변수를 고려하여 전술유도무기 체계 관점에서 탐색기 영상 내 표적존재확률에 대해 분석할 수 있는 시뮬레이션을 수행하였다.