• 대한전기학회:학술대회논문집
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• 대한전기학회 2001년도 춘계학술대회 논문집 전기기기 및 에너지변환시스템부문
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• pp.390-392
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• 2001

This paper presents an intersection of technologies of ITS (intelligent transport systems) and CBTC(communication based train control) in urban transit system. ITS is based on Information and communication technologies. And also these techniques are fundamental for railway system. ITS has some technologies useful in railways such as traveler information service, public transportation information service, and advanced vehicle control Systems. Therefore, both systems need to technological cooperation. In this paper, we proposed useful an cooperation method for both systems.

• 한국BIM학회 논문집
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• 제6권3호
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• pp.24-33
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• 2016

Planning occurs from day-to-day, small-scale decisions to large-scale infrastructure investment decisions. For that reason, various attempts have been made to appropriately assist decision-making process and its optimization. Lately, initiation of a large amount of data, also known as big data has received great attention from diverse disciplines because of versatility and adoptability in its use and possibility to generate new information. Accordingly, implementation of big data and other information management systems, such as geographic information systems (GIS) and building information modeling (BIM) have received enough attention to establish each of its own profession and other associated activities. In this extent, this study illustrates a series of big data implementation cases that can provide a lesson to urban planning domain. In specific, case studies analyze how data was used to extract the most optimized solution and what aspects could be helpful in relation to planning decisions. Also, important notions about GIS and its application in various urban cases are examined.

• 한국디지털정책학회:학술대회논문집
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• 한국디지털정책학회 2006년도 추계학술대회
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• pp.379-386
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• 2006

The purpose of this paper is to analyze the implementation of the GIS infrastructure systems for the u-City, GIS base u-City represents spatial information derived fields, such as geographical distribution of the urban boundaries, physical configuration of the urban locations and cultural characteristics of the urban history. These three aspects relate to urban infrastructure systems implementation, urban monitoring center implementation, and spatial database implementation. In terms of the GIS based u-Ci쇼 urban infrastructure implementation systems, the u-City depends on IT contents and spatial features. IT contents are strongly related to IT839 strategy due to the national agenda is "u-Korea". GIS should contribute to u-City construction through the spatial analyses methods. For these methods various GIS functions will guide to u-City's distribution, location, and characteristics of urbanization. The infrastructure consists of road and road facilities, underground facilities, related agencies facilities, dispatch systems, environmental systems, and urban planning. These six units of the urban infrastructures have spatial databases that consist of spatial configuration, such as dots, lines, and polygons in order to draw the spatial distribution of the u-City GIS based u-City urban infrastructure implementation systems should deal with It convergence to generate fusion affects.

• Korean Journal of Geomatics
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• 제3권1호
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• pp.67-72
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• 2003

We have seen rapid changes in road systems and networks in urban areas due to fast urbanization and increased traffic demands. As a result, many researchers have put greater importance on extraction, correction and updating of information about road systems. Also, by using the various data on road systems and its condition, we can manage our road more efficiently and economically. Furthermore, such information can be used as input for digital map and GIS analysis. In this research, we used a high resolution aerial photo of the roads in Seongnam area. First, we applied the top-hat filter to the area of interest so that the road markings could be extracted in an efficient manner. The lane separation lines were selected, considering the shape similarity between the selected lane separation line and reference data. Next, we extracted the roads in the urban area using the aforementioned road marking. Using this technique, we could easily extract roads in urban area in semi-automatic way.

• 한국지리정보학회지
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• 제5권3호
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• pp.45-54
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• 2002

본 연구는 최근 도시계획분야가 당면한 개념적 기술적 변화들을 포착하고 이들 변화가 도시계획에 미치는 영향을 최근에 제정 및 개정되고 있는 법과 제도에서 어떻게 수용하고 있는지를 살펴본 후, 이러한 환경변화 속에서 도시계획정보체계가 어떤 모습으로 발전해 나가야 할 것인지에 대해 몇 가지 제안을 하고자 시작되었다. 결론으로 새로운 법체계에서 요구하는 새로운 기능을 담당하기 위한 새로운 기법들이 신속히 개발해야 한다는 단기적인 요구뿐만 아니라, 도시계획정보체계의 위상을 현재와 같은 부문별 단위시스템으로서가 아니라 도시공간에 관련된 제반 정책을 총괄하는 상위 의사결정지원시스템으로 자리하도록 해야한다는 점과, 도시계획에 영향을 미치는 각종 개념변화 법과 제도의 변화에 따라 요구되는 계획 및 의사결정을 위해 요구되는 방법들을 종합적으로 검토한 후 이를 바탕으로 도시계획분야의 업무전반에 걸친 재구조화 작업의 필요성, 그리고 도시계획업무의 편익을 단기적인 효과나 비용절감의 측면에 국한하지 말고 도시계획업무의 특성을 감안한 편익평가가 필요함을 제시하였다.

• 대한원격탐사학회:학술대회논문집
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• 대한원격탐사학회 2003년도 Proceedings of ACRS 2003 ISRS
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• pp.1015-1017
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• 2003

Recently, DGPS or RTK-GPS techniques enable us to use satellite based positioning systems with high accuracy. But in urban area, navigation systems suffer from problems such as signal blockage by high-rise buildings, multi-path problems, and so on. So we have to know numbers of visible satellites and quality of signals received at the ground level in urban area as accurate as possible. In this paper, we developed a simulation system called LoQAS [Location service Quality Assessment System, 2002, the University of Tokyo] which can simulate numbers of visible satellites and DOP values using accurate satellite orbital data and 3-D digital map. In this time, we evaluated this system and extended it to deal with reflected signals to assess multi-path problems.

• 한국측량학회지
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• 제34권6호
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• pp.579-589
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• 2016

This research focuses on accomplishing analysis problems and issues by examining the policies and systems related to geo-spatial big data which have recently arisen, and suggests political and systemic improvement plan for service activation. To do this, problems and probable issues concerning geo-spatial big data service activation should be analyzed through the examination of precedent studies, policies and planning, pilot projects, the current legislative situation regarding geo-spatial big data, both domestic and abroad. Therefore, eight political and systematical improvement plan proposals are suggested for geo-spatial big data service activation: legislative-related issues regarding geo-spatial big data, establishing an exclusive organization in charge of geospatial big data, setting up systems for cooperative governance, establishing subsequent systems, preparing non-identifying standards for personal information, providing measures for activating civil information, data standardization on geo-spatial big data analysis, developing analysis techniques for geo-spatial big data, etc. Consistent governmental problem-solving approaches should be required to make these suggestions effectively proceed.

• 대한공간정보학회지
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• 제12권3호
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• pp.3-12
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• 2004

시설물관리시스템은 지자체에 도입된 보편적인 GIS활용체계라 할 수 있다. 지난 몇 년간 많은 지자체에서 시설물관리시스템을 개발하였는데 특히 상 하수도의 도로관리시스템 부분에 치중하였다. 여기에 도입된 시설물관리 범용프로그램의 개념은 지자체간의 개발업무에 있어 중복을 최소화하는 것이다. 최근 지자체에서는 분야별로 정보화의 한계를 인식하고 도시정보체계 구축으로 관심을 돌리고 있다. 따라서 본 연구에서는 지자체에서 도시정보체계를 구축할 수 있도록 지원하기 위한 범용프로그램의 활용가능성을 제시하고자 한다. 이렇게 함으로써 도시정보체계 구축에 있어 중복투자의 방지, 프로젝트 시간단축, 실패가능성의 최소화와 정보프로젝트의 활성화가 기대된다.

• 대한원격탐사학회:학술대회논문집
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• 대한원격탐사학회 2003년도 Proceedings of ACRS 2003 ISRS
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• pp.228-230
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• 2003

In this study, uses of remote sensed imagery in urban environment analysis are represented with the actual processed results with newly implemented programs running under ESRI ArcView-GIS to extract secondary information about mainly urban transportation environment. Implemented programs are about Accessibility index and Connectivity index. Accessibility index and Connectivity index are composed of four types of different algorithms and three types of algorithms such as alpha, gamma, and shimmel index. As show applied examples, tried to find out how remotely sensed imageries can be effectively utilized at actual processing in the direct or indirect ways in these algorithms.

• 한국항행학회논문지
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• 제28권4호
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• pp.442-449
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• 2024

본 연구는 도심항공교통(UAM; urban air mobility) 혹은 미래항공교통(AAM; advanced air mobility) 인프라의 통신, 항법, 감시 및 정보 시스템 인프라에 대한 사이버 위협 분석을 위한 포괄적인 프레임워크를 제안하고자 한다. 잠재적인 취약점과 위협 벡터를 검토함으로써 UAM 인프라의 보안과 회복력을 강화하려고 한다. 또한, 다양한 유형의 사이버 위협을 식별하고 분류하며, 이들 위협이 CNSi 시스템에 미치는 영향을 평가하고, 이러한 위협으로 악용될 수 있는 시스템 내의 취약점을 평가하는 상세한 사이버 위협 분석을 수행하고자 한다. 해당 연구는 UAM 시스템의 배치 및 운영에 참여하는 이해관계자들에게 귀중한 통찰을 제공하고, 궁극적으로 도시 공중 교통의 안전하고 효율적인 통합에 기여하는 것을 목적으로 한다.