• Journal of Internet Computing and Services
• /
• v.25 no.1
• /
• pp.157-166
• /
• 2024

The Army TIGER System, which is being deployed to implement a future combat system, is expected to bring innovative changes to the army's combat methods and comabt execution capability such as mobility, networking and intelligence. To this end, the Army will introduce various systems using drones, robots, unmanned vehicles, AI(Artificial Intelligence), etc. and utilize them in combat. The use of various unmanned vehicles and AI is expected to result in the introduction of equipment with new technologies into the army and an increase in various types of transmitted information, i.e. data. However, currently in the military, there is an acceleration in research and combat experimentations on warfigthing options using Army TIGER forces system for specific functions. On the other hand, the current reality is that research on cyber threats measures targeting information systems related to the increasing number of unmanned systems, data production, and transmission from unmanned systems, as well as the establishment of cloud centers and AI command and control center driven by the new force systems, is not being pursued. Accordingly this paper analyzes the structure and characteristics of the Army TIGER force integration system and makes suggestions for necessity of building, available cyber defense solutions and Army TIGER integrated cyber protections system that can respond to cyber threats in the future.

• Journal of the Institute of Electronics Engineers of Korea SC
• /
• v.49 no.2
• /
• pp.63-70
• /
• 2012

The collision-free flight planning method based on the extended collision map is proposed for cooperation of multiple unmanned aerial vehicles (UAVs) in a common 3-dimensional workspace. First, a UAV is modeled as a sphere, taking its 3-D motions such as rolling into consideration. We assume that after entering the common workspace, the UAVs move along their straight paths until they depart from the workspace, and that the priorities of the UAVs are determined in advance. According to the assumptions, the collision detection problem between two spheres in $R^3$ can be reduced into the collision detection problem between a circle and a line in $R^2$. For convenience' sake and safety, the collision regions are approximated by collision boxes. Using the collision boxes, the entrance times of the UAVs are scheduled for collision avoidance among the UAVs. By this way, all UAVs can move in the common workspace without collisions with one another. For verifying the effectiveness of the proposed flight planning method, the simulation with 12 UAVs is carried out.

• Korean Security Journal
• /
• no.46
• /
• pp.189-216
• /
• 2016

In March 2015, the North Korean UAVs (Unmanned Aerial Vehicles) were found and countries around the world have actively developed UAVs. UAVs or Drone have become commercialized and more civilians use UAVs for leisure. The positive possibilities of UAV use expand. However, there could be the negative sides of UAV use. The UAVs could be used for the purpose of various crime, cybercrime, and terrorism. For instance, hacking devices attached drone could be infiltrated into the sensitive networks to steal personal informations and public data. This could be a new dimension of cybercrime. As the number of internet users and cyberspace rapidly expands, problems of crimes could be worsened both quantitatively and qualitatively. By contrast, defensive measures against such threats are limited. Especially, the Korean society is vulnerable despite its well-advanced internet and computer network technology. This article investigates the current UAV types and its developments, discusses various possibilites of UAV-related crime, cybercrime, and terrorism, and proposes responses.

• Journal of the Korea Institute of Information and Communication Engineering
• /
• v.24 no.3
• /
• pp.435-440
• /
• 2020

The application of the unmanned vehicles in various fields has been attracting attention, and the development of a service utilizing unmanned vehicles has been proceeding. As the service market using the unmanned vehicles rapidly increases, the demand for the development of software for performing the mission with unmanned vehicles is increasing. In particular, as the demand for unmanned vehicle utilization services for public missions such as fire detection, mail delivery, and facility management increases, the importance of developing mission software for unmanned vehicle is increasing. To develop common mission software, architecture design should be made so that unmanned vehicle service provider can easily develop software using reusable libraries or functions through analysis commonly required by various public institutions. In this paper, we discuss the research trends of mission software for public mission unmanned vehicles. In addition, the architecture design of developing formal mission software is proposed. Finally, we propose a data transfer architecture between mission software and data platform.

• The Journal of The Korea Institute of Intelligent Transport Systems
• /
• v.21 no.5
• /
• pp.42-56
• /
• 2022

The thesis is automated traffic control equipment system aims to improve. Areas where improvement is needed about the existing automated traffic control equipment by applying the latest technology and to improve the things that can be derived. Reflecting the derived improvements, we intend to present a plan for the design and implementation of a new unmanned traffic control device. The main improvements were designed to change the housing material of the unmanned traffic control equipment, simplify the configuration of the equipment, reduce the weight of the equipment, and change the purpose of the software. In order to evaluate the objective performance of the improved unmanned traffic control equipment through this study, it was requested to a public certification authority. The reliability of the equipment was secured through KC certification and durability test. It is intended to present the feasibility of securing the marketability of the unmanned traffic control equipment by comparing and evaluating the construction period and installation cost with the existing unmanned traffic control equipment.

• Journal of Aerospace System Engineering
• /
• v.14 no.5
• /
• pp.9-17
• /
• 2020

Mobile robots, including UAVs perform missions with limited fuel. Therefore, the energy-aware path planning is required to maximize efficiency when the robot is operated for a long time. In this study, we estimated the power consumption for each maneuver of a quadcopter UAV in the 3D environment and applied to the cost functions of D^⁎ Lite. The simulations were performed in a 3D environment that is similar to the industrial sites. The efficiency of path generation was high when the energy-aware path planning with simplified heuristic was applied. In addition, the energy-aware path was generated 19.3 times faster than the shortest path with a difference within 3.2%.

• Journal of Welding and Joining
• /
• v.10 no.4
• /
• pp.103-106
• /
• 1992

건설기계는 우리나라의 산업발전과 성장해 왔으며, 또한 발전과정에서 기여한 바도 크다. 건설 기계의 수요는 1970년대 초부터 지하철, 고속도로등 사회간접자본 개발이 활발해 짐에 따라 건 설기계에 대한 투자나 내수가 성장하기 시작하여 1980년대 후반 국가 산업규모가 확대됨에 따 라서 크게 신장하여, 1982년 내수규모가 약 2100여대이던 것이 1991년에는 16,000여대로 증가해 왔다. 이 중 대표기종인 굴삭기가 전 건설중장비의 약 76%('91년도 금액비)를 점하고 있고, 또한 건설기계는 건설작업의 성역화에 기여해 왔으며 앞으로도 이 역할은 변함없을 것이다. 최근에는 건설기계의 안전성, 공정의 자동화, 로봇화 등이 크게 요구되고 있다. 건설기계는 구조상 연강 후판(두께10-50mm)이 주류를 이루고 내마모부품이 많다. 구성부는 강판이 사용이나(총 중량의 약 30%)일부 주강과 단조품이 사용되고 있다. 경량화를 위하여 고장력강이 사용되고, 기어나 샤프트 등에는 합금강이나 탄소강이 쓰이고 있다. 생산공정은 자동화, 무인화가 추진되고 있고, 설계는 CAD/CAM화가 보편적으로 활용되고 있다. 용접은 탄산가스 아아크 용접이 대부분이고, 일부 MAG또는 플락스 충전 와이어(FLUX CORED WIRE)를 사용하고 있다. 합금강 등에는 마찰용접이나 전자 비임용접이 활용되기도 한다.

• Proceedings of the Korean Institute of Navigation and Port Research Conference
• /
• 2010.04a
• /
• pp.280-281
• /
• 2010

컨테이너의 효율적인 이송은 작업 시간이 곧 비용으로 연결되는 항만에서 가장 중요한 요소이다. 따라서 1990년대 중반부터 세계항만은 RMGC(Rail-Mounted Gantry Crane), RTGC(Rubber-Tired Gantry Crane)등의 크레인이 개발되어 야드에서 컨테이너를 적재하는데 널리 이용되어 오고 있으며, 특히 최근에는 CCD카메라, 각종 센서 둥을 이용하여 트랜스퍼 크레인의 무인화를 위해 수많은 연구가 진행되었고 실용화 된 많은 기술들이 현장에서 사용되고 있으나, 여전히 많은 부분이 연구를 필요로 한다. 특히 RTGC의 경우 RMGC에 비해 무인 자동화 연구개발은 미비한 수준이다. 따라서 본 논문에서 RTGC의 무인자동화 작업을 위한 가장 기초라고 볼 수 있는 수학적 모델링을 기반으로한 고정밀도 주행제어기를 설계하고자 한다.

• Proceedings of the KIEE Conference
• /
• 2009.07a
• /
• pp.1672_1673
• /
• 2009

전력계통의 전지역 또는 광역 정전시 빠른 시간내 다시 전력을 공급할 수 있도록 조치를 취하여야 한다. 그러나 시송전에 있어 가장 중요한 자체기동발전소의 무인화로 인해 복구 시간이 지연되고 이 문제점을 해결하고자 자체기동발전소의 원격제어시스템을 완성하였다. 자체기동발전소 비상발전기의 원격제어, 자동동기투입장치의 도입, MMI 설계등과 기존 발전통합시스템과의 연계를 통하여 무인 자체기동발전소의 모든 감시 및 제어를 통합센터에서 가능하도록 구현하였다.

• Proceedings of the Korean Institute of Navigation and Port Research Conference
• /
• 2017.11a
• /
• pp.6-7
• /
• 2017

무인선박의 출현 및 운항 시기가 도래하는 시점에서, 항해사들의 경험적, 정성적 방법으로 항로를 설정하던 기존의 방식이 아니라 정량적 항로 결정 방식 필요성이 제기된다. 본 연구에서는 위험물(HNS) 적재선의 해상교통사고 리스크 기반의 침로 설정을 통해 실시간 데이터 활용에 따라 변화 추정 및 인적 오류를 최소화하여 무인선박 운항 시 활용 가능한 항로 설정 기법을 제안하였다. 항로 주변의 정적 위험(Static Hazard)을 기반한 리스크 평가 방법을 제시하고, Contour map으로 시각화 통해 무인선박뿐 아니라 현존하는 선박에도 적용 가능하여, 사용자 결정에 따라 리스크 기반으로 침로 설정 통해 선박 운항 효율성 및 안전성 확보에 기여할 것으로 기대된다. 본 연구 내용을 토대로 정적 위험뿐 만아니라 선박을 포함한 동적 위험을 반영한 실시간 리스크 기반 항로 설정까지 확장하기 위한 연구가 요구된다.