• Journal of Aerospace System Engineering
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• v.15 no.3
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• pp.65-70
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• 2021

This study presents a method to efficiently advance the Republic of Korea's Unmanned Systems through the analysis of the development of the U.S. Unmanned System Policy. After the occurrence of the September 11 attacks, the U.S. developed Unmanned Systems as a part of RMA and became the leader in this area. The system went through numerous trials and errors during the development and acquisition. From these experiences, the U.S. had embodied Unmanned Systems acquisition methods by establishing Unmanned Systems Development Guidance and DoD Autonomy Community of Interest in 2012. In addition, as diverse unmanned programs started to proceed, it promoted Core Technology development sharing and simplification of functions of the Unmanned Systems to exclude budget-wasting elements such as duplication of programs. The Republic of Korea must politically build a collaborative system between industry/academia/research institute/military and apply evolutionary development strategies from the first step of the development of the Unmanned Systems the future Game Changer. In operations, concepts of the Manned/Unmanned Systems complex operation should be established and intelligent S/W, Open System, and Cyber Security technologies to materialize them developed.

• Journal of the Economic Geographical Society of Korea
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• v.24 no.4
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• pp.411-424
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• 2021

The purpose of this study is to analyze the location characteristics of convenience stores, a consumption industry that forms a new retail environment and implements unattended, and reveals the geographic factors that affect its location. For this purpose, we first examine the growth and regional distribution of manned convenience stores and then construct a gamma generalized linear regression model that explains the distribution of the unmanned convenience stores as well as the manned and unmanned combined convenience stores. As the result, it was observed that the unmanned convenience stores and the unmanned discount stores are located close to public transportation facilities and they have relatively little movement of the population but they are distributed in areas with a higher density of young residential population and densely distributed retail stores and restaurants. The effects of demographic factors on the location of the unmanned convenience stores and the unmanned discount stores differed according to the scope and characteristics of their sales items. Our findings provide an empirical basis for subsequent academic research as an initial study that identified geographic factors influencing the selection of opening locations for unmanned stores.

• Journal of the Korean Society for Aeronautical & Space Sciences
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• v.49 no.4
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• pp.329-334
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• 2021

Korean Air has set the goal of the first stage of the development of unmanned helicopters to perform in hovering flight by remote control. In order to achieve the development goal, Korean Air carried out system integration, ground test, and safety wire test in sequence after carrying out programmed depot maintenance and aircraft modification of manned aircraft, and verified the controllability and flight safety of the unmanned helicopter system step by step. In particular, it was confirmed that the safety wire test technique used in the final stage of verification was an effective method to verify flight safety and controllability for a fully unmanned helicopter system.

• 한국항공운항학회:학술대회논문집
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• 2015.11a
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• pp.50-54
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• 2015

구형무인비행체는 다중 모터를 이용한 무인항공기에 비행 소형화, 경량화, 경제화 등의 장점을 가지고 있다. 본 논문에서는 구형무인비행체의 경로 추종을 위한 제어기 설계 및 성능에 대한 내용을 다루고 있다. 먼저 구형무인비행체의 운동방정식이 제어기 설계를 위해 유도되었고, 유도된 운동방정식을 이용해 경로 추종 제어기를 설계하였다. 구형무인비행체의 자세제어는 무게중심을 변화하는 방법을 사용하였다. 요구 경로를 설정하여 설계된 제어기의 경로 추종 성능을 MATLAB 시뮬레이션을 통해 확인하였다. 시뮬레이션 결과, 제시된 제어기가 설정된 경로를 추종하고 있음을 확인하였다.

• Journal of The Korean Institute of Defense Technology
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• v.5 no.2
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• pp.17-22
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• 2023

In the midst of the development of science and technology based on the 4th industrial revolution, the ROK Army is moving forward with the ARMY TIGER 4.0 system, a ground combat system that combines future advanced science and technology. The system is developing around an AI-based hyper-connected ground combat system, and has mobility, intelligence, and networking as core concepts. Especially, the dronebot combat system is used as a compound word that refers to unmanned combat systems including drones and ground unmanned systems. In future battlefields, it is expected that the use of unmanned and artificial intelligence-based weapon systems will increase. During the transition to a complete unmanned system, it is a very important issue to ensure connectivity individual unmanned systems themselves or between manned and unmanned systems on the battlefield. This paper introduces the Multiplexer Allocation Problem (MAP) for effective command control and communication of UAV/UGV, and proposes a heuristic algorithm. In addition, the performance of the proposed algorithm is analyzed by comparing the solutions and computing time. Also, we discuss future research area for the MAP.

• Proceedings of the Korean Society of Computer Information Conference
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• 2015.01a
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• pp.35-36
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• 2015

무인항공기는 광대역의 전장 정보를 실시간으로 획득하거나 적 위협정보를 파악하기 위해 영상정보를 활용하며 보다 정확한 감시 및 정찰 정보의 획득과 가시화를 위해 정밀한 영상정보처리 기법이 요구된다. 이를 위해 본 논문에서는 무인항공기를 통해 획득한 영상 정보를 지상통제장비로 전송하고 이를 효과적으로 시각화하는 통합 시스템을 제안한다. 제안하는 영상정보처리 시각화 시스템을 통해 무인항공기와 지상통제장비는 전장에서 요구되는 임무와 역할을 효과적으로 수행할 것으로 기대한다.

• Proceedings of the Korea Information Processing Society Conference
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• 2010.11a
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• pp.1442-1445
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• 2010

오늘날 통신기술의 급속한 발달에 따라 자동화 및 무인화 서비스를 제공하는 지능형 선박에 대한 연구, 개발이 활발이 진행 되고 있다. 이에 선박 내 각 장비들의 기능이 고도화 됨으로써, 선박네트워크 환경에서 이들 장비를 효율적으로 제어할 수 있는 연구가 필요한 실정이다. 지능형 선박의 백본 네트워크는 네트워크 구축 환경의 제약과 자동화 및 무인화 특징을 가진다는 점에서, 선박의 사고로 인한 네트워크의 결손이 큰 재해를 가져올 수 있으므로 고수준의 생존성이 요구된다. 따라서 본 논문에서는 고생존 선박 통신망을 고려하여 네트워크 통신 장비들이 이중화 경로를 통해 서로 연결된 이중화 네트워크 토폴로지를 최소의 비용으로 설계하였다. 설계한 이중화 네트워크 토폴로지를 이론적 분석 및 ILP(Integer Linear Programming)를 통해 실험한 결과, 네트워크 생존성에 우수한 성능을 나타내는 것을 확인할 수 있었다.

• KIPS Transactions on Software and Data Engineering
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• v.7 no.5
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• pp.189-194
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• 2018

Unmanned technology is a representative technology that integrates various technologies like electric, electronic, mechanical, artificial intelligence, ICT technology, ect. In special emphasize, ground technology has been developing exponentially in the military field and expanding its utilization area. The patent information analysis method presented in this study, proposes a new patent analysis methodology for patent information analysis and patent information on unmanned ground technology. The patent information analysis processor has 6 levels to extract core patents and technologies. The process consists of: selection of technology to be analyzed, classification of detailed technology / key keyword selection, patent information collection / noise reduction, selection of patent information analysis method, patent information analysis, finally, core patents and key technologies that are extracted. Patent information on unmanned ground technology is also analyzed in this study. First, the technical classification of ground unmanned technology is carried out in detail. The core technology and core patents of ground unmanned technology were extracted through CPP and IPC code connectivity analysis. The results of patent information analysis using proposed patent information analysis method that can be applied to various fields of technology and analysis. These can be used as a material to forecast the direction of future research and development on the technology to be analyzed.

• Journal of Korean Electronics
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• v.3 no.2
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• pp.111-113
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• 1983

• Proceedings of the Korean Institute of Navigation and Port Research Conference
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• 2016.05a
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• pp.29-31
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• 2016

위성 항법 시스템 (GPS : Global Positioning System)은 3차원 위치는 물론 정확한 시각정보를 제공할 수 있는 항법시스템으로 항해에 있어 필수적인 요소이다. 최근 무인선박에 대한 연구가 활발히 진행되며, GPS에 대한 중요성이 증대되고 있다. 무인선박은 자율 항해를 위하여 GPS와 관성센서, 라이다, 카메라 등의 기타 보조 센서를 결합한 데이터를 활용한다. 복합 센서를 활용한 자율 항해에 있어 각 센서들간의 시각동기 또한 중요한 요소이다. 본 논문은 GPS를 활용하여 소프트웨어/하드웨어적인 시각동기화 기법을 제안한다. 제안된 기법은 embedded Linux platform을 활용하여 GPS로부터 획득한 시각동기화 신호를 기준으로 시각동기화된 복합 센서 데이터를 취득하는 방안이다. 제안된 기법의 성능 평가를 위하여, GPS 가용/불가용 구간을 모사한 환경에서 GPS, 관성센서, 고도계를 결합한 실제 데이터를 활용하였다.