• The Journal of the Convergence on Culture Technology
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• v.4 no.3
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• pp.299-303
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• 2018

Generally, when predicting the accuracy of the anti-air artillery system, the error is classified as fixed bias, variable bias, and random error. Then the standard deviation on the target is expressed as the square root of the squared sum of each error value which comes from the random error and variable bias and in the case of fixed bias, the mean value is shifted as the sum of errors from the fixed bias. At this time, the variables indicating the displacement of the direction of azimuth and elevation direction with regard to the change of the unit value of each error are weighted. These errors are then used to predict the system's delivery accuracy through a normally distributed integral. This paper presents a method of predicting system accuracy by considering the correlation of errors. This approach shows that it helps to predict the delivery accuracy of the system, precisely.

• Transactions of the Korean Society of Mechanical Engineers A
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• v.39 no.6
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• pp.611-615
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• 2015

Anti-aircraft gun system is used for low-level air defense system and has more than twin guns with high firing rate in order to maximize the capability of defense. Gun's vibration and bullet's variance has a critical effect on accuracy and hit probability of weapon system such as anti-aircraft gun system with high firing rate. Typical mechanism to reduce the amount of vibration and shock during gun-fire process is very important design factor. In this paper, the suspension characteristics of the vehicle are studied for the improvement of isolating performance of gun firing system with high firing rate. Gun fire test for the vehicle is conducted and computational models using Recurdyn and Adams are created based on test results. Through this study, results of computational analysis are compared with the real test results, which includes type, location and quantity of suspension and gun mechanism are selected for anti-aircraft gun. From the result of this study, we could make basic design and consider the proper component of the system such as suspension and gun spring.

• Journal of the Korea Society for Simulation
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• v.29 no.3
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• pp.83-91
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• 2020

To use the OneSAF model for the analysis of Defence M&S, the most critical factor is the acquisition of input data. The model user is hard to determine the input data such as the probability of hit(P_h) and the probability of kill(P_k). These data can be obtained directly by live fire during the development test and the operational test. Therefore, this needs more time and resources to get the P_h and P_k. In this paper, we reviewed possible ways to obtain the P_h and P_k. We introduced several data producing methodologies. In particular, the error budget method was presented to convert the P_h(%) data of AWAM model to the error(mil) data of OneSAF model. Also, the conversion method which can get the adjusted results from the JMEM is introduced. The probability of a hit was calculated based on the error budget method in order to prove the usefulness of the given method. More accurate data were obtained when the error budget method and the projected area from the published photo were used simultaneously. The importance of the P_h calculation was demonstrated by sensitivity analysis of the P_h on combat effectiveness. This paper emphasizes the importance of determining the P_h data and improving the reliability of the M&S system though steady collection and analysis of the P_h data.

• The Journal of the Convergence on Culture Technology
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• v.10 no.1
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• pp.289-295
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• 2024

This study analyzes the correlation between the accracy of rifle and the result of engagement. And estimates the improvement cost of the rifle accordingly. For this experiment, an engagement class simulation model(AWAM: Army Weapon Effectiveness Analysis Model) was used. We also selected the rifle, which is a portable weapon for the experiment. Prior to this experiment, we conducted a reliability test(VV&A: Verification, Validation and Accreditation) on the model. The VV&A process is mainly done during the development of the DM&S model, which is also necessary for the operation of the M&S. We confirmed the need for VV&A during the experiment and obtained reliable experimental results using the corrected values. In the Accuracy Experiment we found that the 20% improvement is the most effective. And we were able to estimate the cost of acquiring a rifle with a 20% higher accuracy. The cost was estimated by simple regression analysis based on the price of the current rifle. Through this study, we could know the impact of the accuracy of rifle on the experimental results and estimate the cost of improved rifle.

• KIPS Transactions on Computer and Communication Systems
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• v.4 no.12
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• pp.399-408
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• 2015

In the direct Gun Fire Control System(GFCS), it is essential to analyze the impact of the specific error components on the hit probability to optimize the system design. For this purpose the sensitivity equations of these error components are conveniently used, but it is too difficult to get those equations for the complex system with too many system elements. Normally sensitivity analysis is performed using numerical and statistical methods for the ground combat system. This method requires much computation, and makes us difficult to estimate the sensitivity change of specific error component intuitionally for the changing operating conditions. In this paper we propose a set of sensitivity equations deriving from closed form solution of the ballistic differential equation for the bullet. They are handy equations with very little computations, easy to understand the physical meaning of the related system variables. Some simulation results are shown to demonstrate usefulness of our algorithm for the 30mm projectile.

• Defense and Technology
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• no.10 s.152
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• pp.76-79
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• 1991

탐색기는 호밍유도탄에 사용되는 핵심 유도장치로서 저가의 전술유도탄에서부터 고가의 전략유도탄용에 이르기까지 여러 다른 목표와 사양으로 개발되고 있으며, 유도 무기체계의 경제성, 정확도의 개선, 명중률의 향상을 위해 설계요구조건이 더욱 다양화되고 있는 추세이다. 여기에서는 탐색기의 주요 연구분야 설계의 요구조건과 절차, 핵심 소요기술을 소개하기로 한다

• Defense and Technology
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• no.8 s.270
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• pp.56-67
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• 2001

일반적으로 보병병사의 취약점은 첫째 위치가 탐지 당하면 방어수단의 미비로 지원화력에 의해 즉각 피해를 당할 수 있고, 둘째 보병의 무기는 전정에서 다른 무기와 비교하여 위력이 약하고 명중률이 낮으며 시계의 한계를 벗어나기 곤란하며 전투 중 병사는 동료와 지휘관으로부터 고립되기 쉽다는 사실이다. 이러한 문제점을 해결하기 위해 혁신적으로 발전하는 과학기술의 적용으로 다양한 파장영역의 센서, 고속 컴퓨터, 자동화 병기, 그리고 최첨단 기재에 의해 초능력 병사가 출현할 가능성이 높아지고 있다.

• Defense and Technology
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• no.11 s.237
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• pp.76-87
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• 1998

우리나라와 같이 전투종심이 짧고 산악이 많은 지형에서의 저고도에 대한 공중위협은 더욱 가중되고 있어 대공화기의 중요성은 더욱 크다 하겠다. 또한 가장 도발 위험성이 높은 북한과 대치하고 있는 우리의 상황에서 적 공격기의 대지 공격능력 99.5% 이상이 폭탄, 기총, 로켓 공격임을 감안하고 또한 공격헬기를 이용한 대전차 공격과 무인항공기에 의한 위협도 증가하고 있는 추세인 점을 고려할 때 적기의 탐지로부터 격파에 이르기까지의 짧은 반응시간과 야간능력 및 유효사거리 3km내외의 명중률이 뛰어난 무기체계가 필요하게 됨은 자명한 사실이라 하겠다

• Defense and Technology
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• no.6 s.244
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• pp.66-73
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• 1999

휴대용 SAM은 최전방 야전부대와 병행하여 차량 또는 도보로 기동하면서 일정한 사하지점에서 운용병이 직접 휴대하여 운용되므로 진지선정이 용이하고 관심공역에서 명중률이 높아 거점 및 기동방어로, 저고도로 침투하는 항공기를 효율적으로 대처할 수 있는 우수한 방공무기로 평가받고 있다. 따라서 세계 선진국가에서는 방위예산의 삭감에도 불구하고 휴대용 SAM 개발 및 배치를 계속 추진하여 효율적인 지근거리 방공 무기체계로 적극 운용한고 있는 실정이다

• Convergence Security Journal
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• v.8 no.2
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• pp.103-109
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• 2008

In this paper, a study on the seeker technology in guided weapon system development. Seeker is guided weapons mounted on the device that is targeted for implementation homing guided looking for confirmation of the target after picking up, tracking, command, induce calculations necessary to induce the target's direction or control device to provide location information to perform a series of features. Therefore, the Seeker is guided weapons systems and important device that determines the performance of one guided control. Explorer is a tactical and strategy guided weapons from different goals and specifications of weapons systems development and encourage economic efficiency, Interoperability, designed to improve the reliability and hit requirements and the more numerous. Therefore, this research through the Explorer's attributes and weapons systems encourage the development direction of the technical details of the offer.