• 제목/요약/키워드: Situational Awareness

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항공사 CRM 훈련과정 특성에 따른 승무원 훈련만족도 연구 (A Study on the Characteristics of Airline's CRM (Crew Resource Management) Training Programs and Flight Crews' Satisfaction)

  • 염광열;김기웅;박성식
    • 한국항공운항학회지
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    • 제22권3호
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    • pp.50-59
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    • 2014
  • It has been focused on that the major reasons of aircraft accidents resulted not from human error but from the failure of teamwork or communication in 1980's. Such opinions were suggested in the workshop, so called, "Resource Management on the Flight Deck" by NASA in 1979. The researchers agreed the fact the source of human error was originated from the failure in teamwork, communication or even in leadership of captain. Due to the rapid development of aircraft technologies, the reasons for aircraft accident could be easily found out. According to the analysis results of the technology, most of reasons for the accident might directly be connected not to human error or stick-Rudder skill but to situational awareness, communication, leadership or decision making in the aircraft. This paper has tried to research empirically the satisfaction of flight crews who have gone thorugh CRM training in the commercial airline. Based on the quantitative scale by J. Ford et al. (2014), this paper has proved which characteristics of CRM training has a positive impact on the overall satisfaction of CRM training. It was proven that the teamwork and decision making programs among CRM training have a major effect to the satisfaction level of flight crews.

재난재해 현장의 지형인지를 위한 통합 센서 모듈 개발 (Development of an Integrated Sensor Module for Terrain Recognition at Disaster Sites)

  • 서명국;윤복중;신희영;이경준
    • 드라이브 ㆍ 컨트롤
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    • 제17권3호
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    • pp.9-14
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    • 2020
  • A special purpose machine with two manipulators and quadruped crawler system is being developed to work at disaster sites where it is intended to quickly respond in the initial stages after the event. In this study, a terrain recognition module is developed so that the above special purpose machine can quickly obtain ground information to help choose its path while recognizing objects in its way, this is intended to enhance the remote driver's limited situational awareness. Terrain recognition modules were developed for two tasks (real-time path guidance, precision terrain measurements). The real-time path guidance analyzes terrain and obstacles while moving, while the precision terrain measurement feature provides more accurate terrain information by precisely measuring the ground in front of the vehicle while stationary. In this study, an air-cooled sensor protection module was developed so that the terrain recognition module can continue its vital tasks in the event of exposure to foreign substances, including scattered dust, mist and rainfall, as well as high temperatures.

Ack 응답을 이용한 MIL-STD-188-220의 중계전송 성능향상에 관한 연구 (A Study on Relay Enhancing Method of MIL-STD-188-220 using ACK Reply in CNR Network)

  • 최영민;성보현;윤종택;김영호
    • 한국군사과학기술학회지
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    • 제15권5호
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    • pp.635-642
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    • 2012
  • The Packet radio C2OTM(Command and Control On The Move) for Command, Control and situational awareness in communication environment of current Combat Net Radio Network is required in a relay transmission techniques. This is to assure the reliability of information transfer, and extend Wireless Coverage and overcome Communication obstacles of mountainous terrain. For the reliability of information transmission in tactical environment, Ad hoc Networking is necessary considering communication environment and an appropriate application of error correction. In this study, We propose a on-demand SDR algorithm that is currently being applied the FEC, Golay, Repetition Code. This enhanced relay transfer uses Ack Reply in tactical operating environment of MIL-STD-188-220 Protocol.

병사의 시선감지를 이용한 ROI 영상압축 방법 (ROI Image Compression Method Using Eye Tracker for a Soldier)

  • 장혜민;백주현;양동원;최준성
    • 한국군사과학기술학회지
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    • 제23권3호
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    • pp.257-266
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    • 2020
  • It is very important to share tactical information such as video, images, and text messages among soldiers for situational awareness. Under the wireless environment of the battlefield, the available bandwidth varies dynamically and is insufficient to transmit high quality images, so it is necessary to minimize the distortion of the area of interests such as targets. A natural operating method for soldiers is also required considering the difficulty in handling while moving. In this paper, we propose a natural ROI(region of interest) setting and image compression method for effective image sharing among soldiers. We verify the proposed method through prototype system design and implementation of eye gaze detection and ROI-based image compression.

A Proposal on the Navigation Supporting System for improving the Marine Traffic Safety

  • Lee, Hyong-Ki;Jung, Chang-Hyun;Kong, Gil-Young;Park, Young-Soo
    • 한국항해항만학회지
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    • 제33권7호
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    • pp.463-467
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    • 2009
  • In near future, more congested and dangerous marine traffic environment due to the rapid marine traffics increase and ship handling difficulty by enlargement of ship size is predicted. In this paper, an navigation supporting system proposal made to enhance the safe navigation by providing the collision avoidance informations to the navigator via marine traffic environment assessment. Proposed navigation supporting system displays results of marine traffic environment assessment, degree of the dangers and gives reason of danger which is enhance situational awareness of navigator. For this purpose, results of marine traffic environment assessment which is obtained via real time assessment sent to the designated server and through the connection with navigation supporting system navigator being enable to see all those informations on the computer screen Navigator would utilize those information to make a decision in the difficult waterways and thus safe navigation could be enhanced.

전투기탑재 다기능 레이다의 공대공 및 공대지 동시 운용 모드를 위한 스케줄링 기법 (Multi-functional Fighter Radar Scheduling Method for Interleaved Mode Operation of Airborne and Ground Target)

  • 김도운;이우철;최한림;박준태;박준현;서정직
    • 한국항공우주학회지
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    • 제49권7호
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    • pp.581-588
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    • 2021
  • 본 논문은 전투기 레이다 공대공, 공대지 동시 운용 모드에서의 빔 스케줄링 방법을 다룬다. 양질의 전장 상황 인식을 위해 임무들의 우선순위와 더불어 공대공, 공대지 탐색 임무가 교차로 수행되어야 한다는 요구조건을 정립하였다. 그리고 이를 만족하기 위해 WMDD를 개선한 실시간 휴리스틱 빔 스케줄링 방법을 제안한다. 제안된 스케줄링 방법은 실제 레이다 임무 처리 메커니즘 및 측정 모델이 구현된 시뮬레이션 환경에서 비교 분석하였으며 임무 지연시간 관점에서의 성능 향상을 확인하였다.

'Surprise and Startle Effect'가 헬리콥터 조종사의 심리·생리에 미치는 영향에 관한 연구 - 자격증명(자가용 및 사업용) 조종사의 비교 - (A Study on the Helicopter Pilot's Psychological and Physiological Influences by 'Surprise and Startle Effect' - Comparison by Pilot Certificate (Private and Commercial) -)

  • 이석종;이강석;박원태
    • 한국항공운항학회지
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    • 제29권4호
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    • pp.28-36
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    • 2021
  • Surprise and Startle are often cited as potential or contributing factors in the cause of aircraft accidents because they can negatively affect pilots' situational awareness and decision-making. Accordingly, it is necessary to more clearly understand the effect on flight safety through the psychological and physiological reactions that occur to the pilots. Therefore, this study empirically analyzed the effects of Surprise and Startle on the pilot's psychological and physiological responses using a helicopter flight training device for the first time in Korea. As a result of the analysis, the ratio of recognition of Startle and Surprise, heart rate, and respiration rate showed a high difference between private pilots and commercial pilots. This is analyzed as the difference between long-term flight experience and flight time. In addition to presenting effective information for improving the education and training field of helicopter pilots in the future, it is intended to provide basic data for related research.

우주 물체 충돌 위험 분석을 위한 이중 모드 프레임워크 (Dual-Mode Framework for Space Object Collision Risk Assessment)

  • 김시우;이진성;최은정;조성기;안재명
    • 우주기술과 응용
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    • 제2권1호
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    • pp.13-29
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    • 2022
  • 최근 지구 주변 우주 물체 수의 급격한 증가와 함께 우주 위험 대응 기술에 대한 중요성이 높아지고 있다. 본 연구에서는 우주 위험 중 하나인 우주 물체 간 충돌 위험을 분석하기 위한 방법론에 대해 기술하였다. 주어진 정보와 상황에 적합한 충돌 위험 정보를 도출하기 위해 일대일 충돌 사건에 초점을 맞춘 미시적 모드와, 관심 대상이 통과하는 공간에 초점을 맞춘 거시적 모드로 이루어진 이중 모드 프레임워크가 제안되었으며, 각 모드에 적합한 사례 연구를 통해 그 효용성을 검증하였다.

Application of Deep Learning: A Review for Firefighting

  • Shaikh, Muhammad Khalid
    • International Journal of Computer Science & Network Security
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    • 제22권5호
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    • pp.73-78
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    • 2022
  • The aim of this paper is to investigate the prevalence of Deep Learning in the literature on Fire & Rescue Service. It is found that deep learning techniques are only beginning to benefit the firefighters. The popular areas where deep learning techniques are making an impact are situational awareness, decision making, mental stress, injuries, well-being of the firefighter such as his sudden fall, inability to move and breathlessness, path planning by the firefighters while getting to an fire scene, wayfinding, tracking firefighters, firefighter physical fitness, employment, prediction of firefighter intervention, firefighter operations such as object recognition in smoky areas, firefighter efficacy, smart firefighting using edge computing, firefighting in teams, and firefighter clothing and safety. The techniques that were found applied in firefighting were Deep learning, Traditional K-Means clustering with engineered time and frequency domain features, Convolutional autoencoders, Long Short-Term Memory (LSTM), Deep Neural Networks, Simulation, VR, ANN, Deep Q Learning, Deep learning based on conditional generative adversarial networks, Decision Trees, Kalman Filters, Computational models, Partial Least Squares, Logistic Regression, Random Forest, Edge computing, C5 Decision Tree, Restricted Boltzmann Machine, Reinforcement Learning, and Recurrent LSTM. The literature review is centered on Firefighters/firemen not involved in wildland fires. The focus was also not on the fire itself. It must also be noted that several deep learning techniques such as CNN were mostly used in fire behavior, fire imaging and identification as well. Those papers that deal with fire behavior were also not part of this literature review.

An ANN-based Intelligent Spectrum Sensing Algorithm for Space-based Satellite Networks

  • Xiujian Yang;Lina Wang
    • KSII Transactions on Internet and Information Systems (TIIS)
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    • 제17권3호
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    • pp.980-998
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    • 2023
  • In Low Earth Orbit (LEO) satellite networks, satellites operate fast and the inter-satellite link change period is short. In order to sense the spectrum state in LEO satellite networks in real-time, a space-based satellite network intelligent spectrum sensing algorithm based on artificial neural network (ANN) is proposed, while Geosynchronous Earth Orbit (GEO) satellites are introduced to make fast and effective judgments on the spectrum state of LEO satellites by using their stronger arithmetic power. Firstly, the visibility constraints between LEO satellites and GEO satellites are analyzed to derive the inter-satellite link building matrix and complete the inter-satellite link situational awareness. Secondly, an ANN-based energy detection (ANN-ED) algorithm is proposed based on the traditional energy detection algorithm and artificial neural network. The ANN module is used to determine the spectrum state and optimize the traditional energy detection algorithm. GEO satellites are used to fuse the information sensed by LEO satellites and then give the spectrum decision, thereby realizing the inter-satellite spectrum state sensing. Finally, the sensing quality is evaluated by the analysis of sensing delay and sensing energy consumption. The simulation results show that our proposed algorithm has lower complexity, the sensing delay and sensing energy consumption compared with the traditional energy detection method.