• 한국군사과학기술학회지
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• 제16권5호
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• pp.666-674
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• 2013

This paper studied about the design and implementation of tactical communication network simulator in order to obtain tactical communication network parameter, such as link capacity and routing plan, and a number of exceptional cases that may occur during actual deployment by conducting simulation of a large-scale tactical communication networks. This tactical communication network simulator provides equipment models and link models of commercial OPNET simulator for tactical communication network. In addition, 6 types of simulation scenario writings convenience functions and traffic generation models that may occur in situations of tactical communication network environment were implemented in order to enhance user friendliness. By taking advantages of SITL(System-In-The-Loop) function of OPNET, the tactical communication network simulator allows users to perform interoperability test between M&S models and actual equipment in operating simulation of tactical communication network, which is run on software. In order to confirm the functions and performance of the simulator, small-scale of tactical communication network was configured to make sure interoperability between SITL-based equipment and a large-scale tactical communication network was simulated and checked how to cope with traffic generated for each network node. As the results, we were able to confirm that the simulator is operated properly.

• 한국컴퓨터정보학회논문지
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• 제23권12호
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• pp.49-55
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• 2018

In this paper, we propose schemes of blockchain utilization in tactical communication environment. The military tactical communication environment has similar characteristics with blockchain network such as distributed architecture, decentralization, and the need for data integrity. A communication node constituting a tactical communication network is constituted by a system capable of configuring and connecting a network for each node. When a communication node, having such capabilities, is configured as a node of blockchain network, various functions could be performed. In this paper, we propose utilization schemes of authentication, integrity, record management, and privilege control based blockchain technology. Functions for authentication, integrity verification, and record management need to ensure the stored data and could track history. The requirement of function's characteristics are matched to blockchain which is storing data sequentially and difficult to hack data, so that it could perform functionally and sufficiently well. Functions for authority control should be able to assign different privileges according to the state of the requestor. Smart contract will function when certain conditions are satisfied and it will be able to perform its functions by using it. In this paper, we will look over functions and utilization schemes of blockchain technology which could reliably share and synchronize data in a tactical communication environment composed of distributed network environment.

• 융합보안논문지
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• 제17권4호
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• pp.53-62
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• 2017

이 연구의 목적은 부사관과 학생들의 말하기 능력을 향상시키기 위해 전술적 의사소통에 개념을 규정하고 전술적 말하기 교육 방안을 고찰하는 것이다. 본 연구에서는 전술적 의사소통의 개념을 규정하고 목적-행위-목적달성이라는 단계를 구성하였다. 이를 통해 전술적 의사소통은 인식-이해-배려-행위의 반복을 통해 이루어지는 특성을 지니고 있음을 확인하였다. 효과적인 전술적 의사소통을 위해 반복을 최소화할 수 있는 우다루프 전술의 대화를 제시하였다. 우다루프 전술의 대화를 적용한 부사관과의 말하기 교육은 변화-적용-실현의 단계를 지니고 있으며 학생들에게 대인관계능력과 문제해결능력을 함양하고 실행력을 겸비하게 하는 교육이다. 이 교육방안은 우다루프 전술의 의사소통을 실현함으로써 대화의 환경적 요인을 객관적 정보로 전환하여 효율적인 의사소통 능력을 향상시키는 것이다. 마지막으로 이 연구의 한계와 향후 연구를 위한 제언을 하였다.

• 디지털융복합연구
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• 제11권12호
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• pp.303-309
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• 2013

본 논문에서는 미군 전술통신 운용환경과 정책, 전술링크에서 보안정책 및 전달성능을 분석하였다. 운용환경에서는 운용통신 메시지와 반자동 전투력을 지원하는 프레임워크, 링크계층의 SINCGARS 사양을 살펴보았고, 전술 보안정책에서 COMSEC 정책과 응용계층 보안을 분석하였다. 또한 전술 통신환경에서 전송 성능 및 보안 동기 검출 측면에서 분석하였다. 전술링크와 COMSEC 보안정책은 AFKDMS, AKMS, RBECS, KIV-7/HSB 암호디바이스와 같은 측면에서 분석하였다.

• 한국군사과학기술학회지
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• 제13권4호
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• pp.577-585
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• 2010

The Military Tactical Communication technology for effective network-centric warfare is developing. Targeting broadband wireless transmission, core technology for connection, and Transmission technology that secure survivability under High-speed Movement environment. On the one hand, Tactical data communication system that reflects military characteristic is developing on the base of Legacy communication equipment which is used in the field. Because almost every military units in the field have used voice to communicate which lower efficiency of operation, they have made effort to Substitute voice communication which delays military Operation Tempo to digital communication. The Communications environment of troops in Forward edge of battle field area is very poor. Especially in terms of limited frequency allocation and bandwidth. Therefore, improving the efficiency of frequency is essential for Military Tactical Communication. This paper is about The Data Compression Method for increase of Efficiency in Tactical Data Communication over Legacy Radios which are UHF, VHF, HF Radio. I proposed and proved the most efficient Data Compression Method that reflects military characteristic, after analyzing the experimentation, which simulate CAS(Close Air Support mission) data transmission between Pilot and TACP.

• 한국통신학회논문지
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• 제37권1C호
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• pp.63-75
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• 2012

본 논문은 1Mbps 이하의 전술통신망 환경에서 소프트웨어 방식의 화상회의 운용방안을 연구하였다. 전술통신망 환경은 대역폭이 제한될 뿐만 아니라 불안정한 네트워크 상태로 데이터 손실과 전송지연 현상이 빈번히 발생한다. 또한 전술통신망을 기반으로 하는 지상전술지휘통제체계가 대역폭 사용의 우선권을 갖고 있기 때문에 화상회의가 사용할 수 있는 대역폭은 더욱 제한될 수밖에 없다. 본 논문에서는 이와 같은 전술통신망의 제한사항을 분석하고, 전술통신망 기반의 소프트웨어 방식 화상회의 품질향상 방안과 이를 적용한 실제 운용실험 결과를 함께 제시하였다. 손실패킷에 대한 재전송기법과 데이터 용량을 줄이기 위한 영상크기 축소를 우선적으로 적용하였다. 화상회의 운용을 위해서는 사용자 대역폭 보장이 최선의 해결방안이나 제한된 대역폭의 전술통신망에서는 영상 데이터 압축률 조정, 전송되는 영상 프레임 수 조정, 음성코덱 변경, 음성보정 데이터 사용 등을 최적화하여 화상회의 품질을 향상시킬 수 있다.

• Journal of Positioning, Navigation, and Timing
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• 제9권2호
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• pp.139-147
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• 2020

In this paper, design measure were proposed for the construction of terminal systems for airborne platforms, which are key element in the Joint Tactical Data Link System (JTDLS) complete system. The Korean perfect tactical data link (JTDLS) is a communication system to establish an independent tactical data link network and needs to develop a MIDS-LVT (Link-16) communication terminal for datalink. Once a Ground/Navy JTDLS terminal system is established around airborne platform, it will be possible to break away from reliance on NATO-based tactical data link joint operations and establish independent Korean surveillance reconnaissance real-time data sharing and tactical data link operations concepts. in this paper, the essential development elements of airborne platform mounting and operable JTDLS terminals are presented, and the concept of system design is proposed to embody them. Further, improved system performance was analyzed by applying the concepts of complex relative navigation system and Advanced TDMA protocol for the deployment of airborne tactical datalink networks.

• 한국군사과학기술학회지
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• 제21권3호
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• pp.361-369
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• 2018

This paper proposes a design of asymmetric time division multiple access method for tactical radio communication. Typical tactical radio communication has a limited execution of transmission, because uplink message requires more extended response time than downlink message. In order to solve this problem, this paper analyzes operational environment of Korean tactical radio communication and proposes an asymmetric TDMA based on it for performance of tactical communication. The simulation model is used to investigate constraints of real experiments for proving effectiveness of the proposed approach. Simulations results show that the proposed scheme outperforms the conventional scheme in terms of throughput, response time, and delay.

• 한국항행학회논문지
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• 제27권2호
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• pp.167-172
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• 2023

대한민국 해군이 운영하는 P-3C 해상초계기에는 전술데이터 수집을 위한 다양한 센서 장치(LRUs, line replace units)들이 탑재 되어 있다. 센서 장치의 특성에 따라 IEEE 802.3, MIL-STD-1553A/B, ARINC-429 등 각기 다른 다양한 통신 프로토콜로 운영된다. 그리고 수집된 전술데이터는 임무조작사들을 위한 전술컴퓨터(tactical station)에서 처리가 되며, 이 전술컴퓨터는 기가비트 이더넷을 주축으로 한 클러스터링 네트워크를 구성하고 분산처리방식으로 운영이 된다. 센서 장치와의 원활한 통신을 위해 특정 전술 컴퓨터는 센서 장치를 위한 주변 장치(예: ARINC-429 interface card)를 별도로 탑재한다. 문제는 이 특정 장치의 주변장치 제어와 통신 중계에 따른 전체 분산처리의 성능을 떨어트리는 단점이 발생하며, 심지어 해당 전술컴퓨터의 동작 정지는 관련 센서 장치와 통신을 두절시키는 문제를 갖는다. 본 논문에서는 이를 해결하기 위해 별도의 중계기를 탑재하는 방법을 제안하며, 이 중계기의 동작 결과를 통해 제안 적용의 타당성을 입증한다.

• 한국군사과학기술학회지
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• 제13권2호
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• pp.243-251
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• 2010

The military has been putting great efforts into applying data communication on existing voice communication systems being used in NCW(Network Centric Warfare). Data communication will be an effective choice in one of many effort to yield a minimum kill chain, comparing to legacy voice communications, when tactical units conduct their missions. However, the required budget will be enormous, in case of the replacement of a lot of legacy communication systems with new one. As a cost-effective alternative, the tactical data communication systems using the conventional radio systems instead of the development of new radio systems has been proposed. It is mandatory, though, to ensure QoS while maintaining data communication by making use of legacy radio systems already in use. This paper focuses on the performance issues experimented and analyzed for tactical data communication through the legacy radio systems as the first step towards guaranteed QoS. We have conducted various experiments such as the transmission error rate on certain tactical messages, performance evaluation of redundant transfers, the relationship between the transmission frame size and rate of error, the identification of error points in the transmission frame, and techniques to reduce the errors in both hopping and non-hopping modes. As a result of the performance experiments, The adaptive communication module which decides the redundant transmission or the Forward Error Correction(FEC) technique by analyzing channel status and current transmission status(hopping/non-hopping) of the legacy radio should be designed. the FEC technique in non-hopping, and the redundant transmission technique in hopping mode was recommended from the result of experiment with the frame size is 20bytes in non-hopping and 10Bytes frame size in hopping mode.