• Proceedings of the KOR-KST Conference
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• 1998.10b
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• pp.453-453
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• 1998

우리나라가 관할하는 공역의 넓이는 약 40만$\textrm{km}^2$로 주한미군이 1952년부터, 국방부가 1958년부터 관리해 오다가 1995년에 건설교통부가 공역관리 업무를 인수하였다. 우리나라의 공역(대구 FIR)에는 비행금지구역, 비행제한구역, 위험구역, 경제구역, 훈련구역, 군작전구역 등 무려 114개의 특수목적 공역이 설정되어 있어 민항공기의 운항이 자유롭지 못하다. 또한 내륙을 중심으로 14개의 접근관제규역이 설정되어 있고 각기 관할구역에 대하여 배타적인 권리를 행사함으로써 신공항건설에 따라 운항이 필요한 소요공역 확보에도 애로가 많은 실정이다. 항로는 국내항로 5개, 국제항로 11개 등 모두 16개의 항로를 운영하고 있으나 대부분 한 개의 항로를 양방향으로 운영하고 있어 교통량 처리가 어려운 실정이고 항공교통량 전체의 75%가 수도권으로 집중되는 현상이 나타나 안전도 확보에도 지장을 주고 있다. 우리나라는 군사적 특수성 때문에 군의 작전비행 활동이 상당히 많으나 관제 및 비행절차에 관한 규정을 군과 민이 각각 달리 운영하고 있는 문제점들이 있다. 금번 세미나에서는 군의 작전활동을 유지하면서 민 항공의 안전성, 경제성 등을 확보하기 위하여 1)국제민간항공기가 제정한 공역등급화(ATS Air Space Spacification)방안, 2)접근관제구역의 조정개선 방안 3)특수공역의 합리적 운영방안, 4)항로의 적선화, 복수의 일방통행 항로 확보 및 국제연결 항로의 다양한 방안, 5)군민간의 관제규정의 일원화 방안 등을 제안하고자 한다.

• Journal of Advanced Navigation Technology
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• v.22 no.5
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• pp.367-374
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• 2018

A trajectory-based scheduling system is proposed for air traffic management using next generation aviation data communication link. Based on the service concept of 4-dimensional trajectory data link (4DTRAD) using air traffic serveices (ATS) datalink Baseline 2, a procedure for trajectory-based operation of an en-route flight is established and described in detail. To mitigate air traffic controllers' workload which might be caused by various and complicated data utilization, a prototype of the scheduling system, which predicts the aircraft trajectory based on the flight intents received by air traffic service system and provides advisory information for air traffic control, was developed. The simulation environment for trajectory based operation was built to validate the scheduling functionality of the prototype.

• Journal of the Korean Society of Propulsion Engineers
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• v.25 no.3
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• pp.127-137
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• 2021

The launch complex(LC) is composed of various facilities. The launch control system that operates remotely those of LC spends much time and labor for developing and verifying its control algorithms. The verification of algorithms is performed by the software developer entering simulated state values based on the test procedure and checking the output result according to the algorithm flow. These verification processes should be performed repeatedly, thus the human errors are easily occurred. In this paper, an efficient automated verification method with a script test procedure is proposed to minimize human errors and shorten the verification duration. We also present the results of the algorithm verification tests for the cases of the compressed gases supply system and the electro pneumatic panel system of LC.

• Korean Journal of Comparative Education
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• v.18 no.4
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• pp.113-139
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• 2008

The purpose of this study is to analyze the operating case of admission officer system of colleges and universities in USA, and to deduce its implications to Korean colleges and universities. In order to accomplish the purpose of this study, following methodologies were adopted: review on the related literatures, statistical data, and previous studies concerning admission officers of colleges and universities in USA, and in-depth interview with them. Historical and cultural background of university admission system of USA was analyzed. Case study on USA colleges and universities was divided with four parts such as determining factors of admission and admission methods, organization for admission affairs and its number of persons, work of admission officer and admission process, and cost of admission and salary. Implications to Korean colleges and universities were presented with three points such as overall implication, implication on materials for admission process, and implication on managing system of admission. Based on the analysis, discussion and implications, the conclusion and further suggestion of this study are as follows: First, actual authority of admission should be grant to admission officer. Second, not only non-curricular factors but also scholastic factors should be emphasized in role of admission officer. Third, education and training about work of admission officer and unification of criteria for admission should be held. Fourth, admission officers with various occupation background are needed. Fifth, work of admission officers should be extended to various work concerning university entrance. Sixth, cross-checking on marks of over two admission officers is needed. Seventh, in order to stabilize admission process, status of admission officer should be stabilized. Eighth, part-time admission officers are need to employ in season of admission. Ninth, authority of weighting high schools should be grant to admission officers in long term perspective.

• Bulletin of the Korean Space Science Society
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• 2011.04a
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• pp.32.4-33
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• 2011

관제시뮬레이터는 위성운용의 준비 및 위성운용 기간 동안의 운용절차의 검증, 지상관제 시스템의 시험, 운영자의 교육 및 훈련 등을 목적으로 활용될 수 있다. 시뮬레이터는 보통 운영체제, 미들웨어, 시뮬레이션 기반소프트웨어, 에뮬레이터 및 위성과 외부 환경의 모델링 부분으로 구성된다. 에뮬레이터는 위성의 비행소프트웨어의 이미지를 어떤 수정없이 실제적으로 실행할 수 있게 한다. 위성의 모델링 부분은 시뮬레이터의 운용목적에 맞는 각종 하드웨어와 기능들에 대해서 수학적 방정식 등을 이용하여 위성 및 외부환경을 실제적으로 모델링하는 부분으로 구성된다. 이외에 시뮬레이션의 제어 및 관리와 사용자 접속부분을 관리할 수 있는 모듈들이 추가적으로 구성된다. 시뮬레이션 기반소프트웨어는 이러한 시뮬레이션 구성요소(Component)들을 사용자 환경설정 파일에 기반하여 통합하여 구현 및 운용할 수 있는 환경을 제공한다. 구현되는 시뮬레이터의 틀(Framework)로써 모듈간 각종 데이터의 표준 입출력, 일반적인 모델 등을 제공한다. 운용되고 있는 세계 각국의 위성 시뮬레이터에서 SIMSAT, SIMWARE 등의 시뮬레이션 기반소프트웨어가 활용되고 있으며, 관제시뮬레이터가 개발될 경우 기반소프트웨어의 자체개발 또는 기존 상용제품 활용의 여부가 우선적으로 결정되어야 할 것이며, 또한 기존 상용제품 활용 시 각 기반소프트웨어의 특성을 분석하여 적절한 기반소프트웨어의 선택이 결정되어야 할 것이다. 이 논문에서는 시뮬레이션 기반소프트웨어의 기능 및 현재 활용되고 있는 상용제품의 특성에 대해서 분석비교를 기술한다.

• Convergence Security Journal
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• v.15 no.5
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• pp.53-59
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• 2015

With radical development of information and communication Technology, Internet of Things(IoT) era - all the th ings around us are connected through internet so that it enables objects to exchange data with connected devices a nd is expected to offer new advanced services that goes beyond the value where each existing objects could have o ffered respectively - has come. Concerns regarding security threat are being raised in adopting IoT as the number of internet-connected appliances are rapidly increasing. So, we need to consider how to protect and control countles s objects. This paper covers the role and procedures of existing security control. Futhermore, it provides information about the direction of security control when it comes to IoT.

• Journal of Advanced Navigation Technology
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• v.20 no.4
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• pp.292-297
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• 2016

Since continuous descent operations (CDO) is one of several tools available to aircraft operators and air navigation service providers (ANSPs) to increase safety, flight predictability, and airspace capacity while reducing noise, controller-pilot communications, fuel burn and emissions, widespread implementation of CDO would result in significant reductions in the environmental impact and aircraft operation costs in south korea as well. After analyzing each procedure from standard terminal arrival routes used for the Incheon international airport, it can be noticed that one of the procedures has a relatively high altitude constraint at initial approach fix than others, which lead the pilots to use unnecessary drag device in certain situations. Therefore we came to a conclusion that some arrival procedures need to be revised, so unnecessary procedure required during approach can be minimized, thereby reducing fuel consumption, noise and emissions compared to current approach procedures. And it is going to increase the safety margin significantly during approach phase due to reduced workload.

• Journal of Intelligence and Information Systems
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• v.28 no.2
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• pp.57-74
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• 2022

Recently, artificial intelligence parking control systems have increased the recognition rate of vehicle license plates using deep learning, but there is a problem that they cannot determine vehicles with fake license plates. Despite these security problems, several institutions have been using the existing system so far. For example, in an experiment using a counterfeit license plate, there are cases of successful entry into major government agencies. This paper proposes an improved system over the existing artificial intelligence parking control system to prevent vehicles with such fake license plates from entering. The proposed method is to use the degree of matching of the front feature points of the vehicle as a passing criterion using the ORB algorithm that extracts information on feature points characterized by an image, just as the existing system uses the matching of vehicle license plates as a passing criterion. In addition, a procedure for checking whether a vehicle exists inside was included in the proposed system to prevent the entry of the same type of vehicle with a fake license plate. As a result of the experiment, it showed the improved performance in identifying vehicles with fake license plates compared to the existing system. These results confirmed that the methods proposed in this paper could be applied to the existing parking control system while taking the flow of the original artificial intelligence parking control system to prevent vehicles with fake license plates from entering.

• Journal of the Korean Society for Aeronautical & Space Sciences
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• v.40 no.9
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• pp.800-806
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• 2012

This paper proposes design and development of the Integrated Ground Support System (IGSS) for the flight test of the Unmanned Aerial Vehicle (UAV), which combines ground support and ground control. The integrated flight test of the UAV is a necessary procedure to validate the functionality of the Unmanned Aerial System (UAS). In order to execute cost-effective and systematic flight tests, the IGSS is regarded as an inevitable infrastructure of UAS for small laboratories. The proposed IGSS has functions of ground control, radio communication, power generation, transportation and the maintenance of the UAV.

• Journal of Advanced Navigation Technology
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• v.19 no.2
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• pp.103-107
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• 2015

In this paper, we propose a secure alternative for improving airspace capacity of Incheon International Airport. Since the direction of simultaneous independent approaches to runway 15/16 radar-guided approach for ILS approach procedures for the need to provide control services, in view of the radar is the smallest possible no-fly zone airspace propose the demilitarized zone (P-518) adjustment. If possible simultaneous independent approaches to secure a temporary increase in the holding area due to traffic, the military training airspace gradually secured a total of 10 miles by 5 miles, some military training airspace in Osan Approach Control is proposed to include in Seoul Approach Control.