• 한국군사과학기술학회지
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• 제25권4호
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• pp.390-400
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• 2022

Military deception is an action executed to deliberately mislead enemy's decision by deceiving friendly forces intention. In the lessons learned from war history, deception appears to be a critical factor in the battlefield for successful operations. As training using war-game simulation is growing more important, it is become necessary to implement military deception in war-game model. However, there is no logics or rules proven to be effective for CGF(Computer Generated Forces) to conduct deception behavior automatically. In this study, we investigate methodologies for CGF to learn and conduct military deception using Reinforcement Learning. The key idea of the research is to define a new criterion called a "deception index" which defines how agent learn the action of deception considering both their own combat objectives and deception objectives. We choose Korea Marine Corps Amphibious Demonstrations to show applicability of our methods. The study has an unique contribution as the first research that describes method of implementing deception behavior.

• 융합보안논문지
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• 제23권2호
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• pp.37-45
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• 2023

사이버 기만 기술은 공격자의 활동을 모니터링하고 새로운 유형의 공격을 탐지하는 데 중요한 역할을 한다. 그러나 기만 기술의 발전과 더불어 Anti-honeypot 기술 또한 발전하여 기만환경임을 알아챈 공격자가 기만환경에서의 활동을 중단하거나 역으로 기만환경을 이용하는 사례들도 존재하지만 현재 기만 기술은 이러한 상황을 식별하거나 대응하지 못하고 있다. 본 연구에서는 마코프 체인 분석 기법을 이용하여 기만환경에 침입한 공격자의 기만환경 식별 여부 예측 모델을 제안한다. 본 연구에서 제안하는 기만 여부 판단 모델은 확인한 바로는 공격자의기만환경 식별 여부를 판단하기 위한 최초의 시도이며 기만환경을 식별한 공격자를 고려하지 않는 기존의 기만기술 기반 공격자 분석에 대한 연구의 제한사항을 극복할 수 있을 것으로 예상한다. 본 연구에서 제안한 분류 모델은 기만환경임을 식별하고 활동하는 공격자 분류에 97.5%의 높은 정확도를 보였으며 공격자의 기만환경 식별여부 예측을 통해 수많은 기만환경 침입 데이터 분석 연구에 정제된 데이터를 제공할 수 있을 것으로 기대된다.

• 한국군사과학기술학회지
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• 제25권3호
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• pp.239-250
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• 2022

In this paper, we analyze the performance of an FM radio based passive radar in the presence of deception jamming such as false-target generation. To do this, we examine the effects of applying the deception jamming signal to the passive radar through the derivation of the construction of the amplitude-range-Doppler(ARD) plot. The analysis results show that applying the deception jamming signal with the low power similar to the target echo signal generates false targets at positions set by the jamming variables compared to the real target position in the ARD plot. Also, it is possible to induce the jamming effect so that only false targets are detected by selecting appropriate jamming power. Simulations are included to verify the theoretical results and to discuss on the effectiveness of the deception jamming on the FM radio based passive radar.

• 한국군사과학기술학회지
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• 제13권5호
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• pp.910-916
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• 2010

A modern artillery use a FMCW Proximity Fuze for effectively target destruction. FMCW Proximity Fuze can be deceived by Jamming Technique because it uses RF for distance estimation. FMCW Proximity Fuze algorithm is similar to FMCW radar's, but normal Jamming Tech. like Noise and Mulitone is useless. Most Shots with FMCW Proximity Fuze have a additional mechanical fuze against RF Jamming. Shots explode by mechanical fuze when Proximity Fuse is Jammed. However, distance Deception is available because shots can not distinguish between deception jamming signal and ground reflected signal. For making Distance Deception Jamming, FMCW signal tracking is demanded. In this paper, we propose a FMCW tracking method and develop the Jammer to show Jamming signal.

• 한국군사과학기술학회지
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• 제21권5호
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• pp.583-590
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• 2018

Cross eye technique was proposed as an angle deception jamming technique against monopulse radars. Tracking radars use monopulse or conical scan methods for angle estimation of a target. Thus, if we verify deception performance of cross eye technique against a conical scan radar, efficient jamming systems can be developed to disturb both monopulse radars and conical scan radars. In this paper, we propose a mathematical model for a conical scan radar and a cross eye system. Using the proposed model, angular deception performance of the cross eye technique against conical scan radar is analyzed.

• Journal of Positioning, Navigation, and Timing
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• 제11권3호
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• pp.173-179
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• 2022

The satellite navigation deception technology disturbs the navigation solution of the receiver by generating a deceptive signal simulating the actual satellite for the satellite navigation receiver mounted on the unmanned aerial vehicle, which is the target of deception. A single spoofing technique that creates a single deceptive position and velocity can be divided into a synchronized spoofing signal that matches the code delay, Doppler frequency, and navigation message with the real satellite and an unsynchronized spoofing signal that does not match. In order to generate a signal synchronized with a satellite signal, a very sophisticated and high precision signal generation technology is required. In addition, the current position and speed of the UAV equipped with the receiver must be accurately detected in real time. Considering the detection accuracy of the current radar technology that detects small UAVs, it is difficult to detect UAVs with an accuracy of less than one chip. In this paper, we assume the asynchrony of a single spoofing signal and propose a region defense technique using multiple spoofing signals.

• 한국군사과학기술학회지
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• 제19권5호
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• pp.598-605
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• 2016

One of the effective methods for angular deception against monopulse radar is a cross eye technique. The typical cross eye technique can cause significant angular errors to monopulse radar by using two transceivers which transmit the signals with opposite phases. However, typical cross eye systems have high complexity of implementation because two transceivers should be installed with enough distance on the platform. In this paper, we propose a new cross eye technique with single transceiver based on the multipath effect. Then, angular deception performance of the proposed technique is analyzed.

• Journal of Advanced Marine Engineering and Technology
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• 제41권2호
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• pp.171-175
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• 2017

The high-tech large warships are minimal and they are always monitored by opponents, and become primary targets when conflicts occur. The improvement in reducing susceptibility has significant importance because it is difficult for a ship to maintain mission capability and functionality once it is damaged. Ordinary decoys are effective only under the premise that the ship has already been exposed. Traditionally, for naval vessels, techniques related to the radar have been used in military stealth techniques to ensure confidentiality. The corner reflector, on the other hand, can produce rather large radar cross sections. Continued use of deceptive systems such as chaff during operations will help to improve survivability of naval ships. From this viewpoint, corner reflector was considered for making radar countermeasures and deception technology. This paper reviews the current status of corner reflector basis decoys and the technical feasibility of corner reflectors for developing structural decoys.

• 한국시뮬레이션학회논문지
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• 제27권2호
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• pp.115-123
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• 2018

헬기에 DIRCM을 1개 또는 2개 탑재한 경우의 시뮬레이션을 위한 효과도 분석 기법을 정립하였다. 기만율 70% 이상 및 탐지율 100%일 때 DIRCM을 1개 장착시 10~30% 수준의 생존율을 보였고, 2개 장착시 70~80% 수준의 생존율을 나타내었으며, DIRCM의 기만율 증가에 따라 헬기 생존율이 증가하였다. 탐지율 70% 및 기만율 100% 이상일 때 DIRCM을 1개 장착시 10~30% 수준의 생존율을 보였고, 2개 장착시 70~80% 수준의 생존율을 나타내었으며, DIRCM의 탐지율 증가에 따라 헬기 생존율이 증가하였다. 기만율과 탐지율이 100%일 때 DIRCM을 1개 장착시 20~30%의 생존률을 보였고, 2개 장착한 경우 70~90% 수준의 생존율을 나타내었다.

• 대한조선학회논문집
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• 제46권3호
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• pp.313-314
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• 2009

To project military power, the paradigm of the modern warship aquisition has evolved with more large platform and high-technology equipment. For example, the Aegis combat system equipped warship is one of the most advanced and capable defense systems currently in use. Concurrently, if the warship attacked and disabled, it may worse the asymmetry of the battle field and it also depress the morale of the fleet. For that reason, to keep and protect few number of the big and high technology equipped warship from enemy is very important. At the present, the performance of unit weapon has enhanced remarkably. A Korean-built SS-209 class submarine, Lee Chun-ham, participated in Naval Exercise Tandem Thrust conducted in 1999, sink the target ship ex-USS Oklahoma by a single torpedo. USS Stark was struck on May 17, 1987, by two Exocet anti ship missiles and disabled. For this reason, susceptibility should be prior to vulnerability and recoverability. In this paper, deception ship which is small and chief but has very similar signatures to large and high technology equiped warship has conceptually studied by using systems engineering approach. And it may be a effective way to enhance the susceptibility of the key fighting power.