• 제목/요약/키워드: GIS기법

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GIS Based Advanced Positioning Technique for Mobile GPS (GIS 정보를 이용한 향상된 모바일 GPS 측위 기법)

  • Jeong, Gil-Seop;Kong, Seung-Hyun
    • The Journal of Korean Institute of Communications and Information Sciences
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    • 제40권11호
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    • pp.2261-2270
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    • 2015
  • GIS(Geographic Information System) based Positioning technique uses geographic information to predict which satellites are visible or invisible. GPS positioning has poor positioning accuracy in dense urban area where tall buildings block the satellite signals. In this paper, we proposed GIS based Advanced Positioning technique of Mobile GPS to resolve this problem. Particularly, this technique improves positioning accuracy in dense urban area. It is consist of ephemeris and GIS server. We will inversely estimate pseudorange by using NMEA-0183 output data of mobile GPS. After that, we can find more accurate position by using ephemeris and GIS information.

A Cost-Effective Bulk Insertion Method in Mobile GIS DBMS Environment (Mobile GIS DBMS에서 비용효율적인 대량삽입기법에 관한 연구)

  • Lee, Kyung-Ah;Lee, K.J.;Jin, S.I.
    • Proceedings of the Korean Information Science Society Conference
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    • 한국정보과학회 2006년도 가을 학술발표논문집 Vol.33 No.2 (C)
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    • pp.177-182
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    • 2006
  • 최근 무선 통신 구조가 확산대면서, 모바일 기기와 다양한 모바일 GIS 서비스가 일반화되었다. 그래서 모바일 기기에서 효과적으로 GIS 자료들을 검색할 수 있는 모바일용 GIS DBMS가 필요하다. 물론 모바일 GIS DBMS는 환경적 제약사항과 GIS 자료들의 특성들을 극복하기 위한 대량삽입 기법이 필요하며 이 기법은 모바일 GIS DBMS를 개발하는데 있어서 가장 중요하다. 이 제약사항은 낮은 대역폭, 작은 저장공간 그리고 비공간 데이터 보다 상대적으로 매우 큰 공간 데이터의 특징을 포함한다. OBO기법을 이용하는 GIS DBMS로의 데이터의 삽입은 차례대로 삽입된다. 그러나 대부분의 공간데이터들은 전송비용과 긴 로딩시간으로 인해 서비스를 지연시키기 때문에 공간 인덱스를 기반으로 하는 대량삽입을 선택한다. 본 논문에서는 높은 성능과 안전성을 가진 동적인 공간 인덱스 R*-tree을 이용하는 대량 삽입 기법을 제공한다.

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Selection of the Bicycle Road in Cheonan City using GIS (GIS기법을 이용한 천안시 자전거도로 노선선정)

  • Han, seung-hee
    • Proceedings of the Korea Contents Association Conference
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    • 한국콘텐츠학회 2018년도 춘계 종합학술대회 논문집
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    • pp.121-122
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    • 2018
  • 본 연구는 GIS기법, GPS기법을 이용하여 천안시 내의 자전거도로 최적노선을 선정하고 문제점 제안에 관한 것이다. 연구에서 자전거도로 최적노선을 위한 물리적, 사회적, 환경적 등 다양한 측면의 조건과 제안 요소들을 복합적으로 분석하여 문제점을 제시하고 GIS, GPS기법을 이용해 데이터값을 표출하여 해당 지역을 비교 분석하였다. 연구결과 편의성, 안전성, 접근성을 고려한 자전거도로의 노선을 제안하였으며천안시 자전거도로의 안전성을 높이고 효율적인 자전거 이용 환경을 구축할 수 있을 것을 기대한다.

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Locational changes of the branch-bank with GIS in Taegu (GIS기법(技法)에 의한 은행(銀行) 점포(店鋪)의 입지변동(立地變動) - 대구시(大郵市)를 사례(事例)로 -)

  • Park, Chan-Suk;Yi, Yun-Young
    • Journal of Korean Society for Geospatial Information Science
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    • 제1권2호
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    • pp.113-129
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    • 1993
  • The technique of GIS has been used in diverse applications. This study analyzed with the use of GIS technique how the branch-banks of Taegu undergone locational changes. Locational changes of the branch-banks in a city have great significance in such disciplines as urban geography and urban planning. The location of the blanch-bank plays a major role in the urban study to represent the flow of layer-by and producer under the commodity economy and find spatially out the shift of the economy gravity of urban center. But there have difficulties in the difficulties research on locational changes of the branch-bank with traditional map overlay techniques. The technique of GIS allowed to overcome there difficulties beyond the limits of traditional research methods.

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A Study on The Optimum Earthwork Volume using GIS (GIS기법을 이용한 토공산정의 최적화)

  • Kim, Sung-Hun;Sim, Hee-Chul;Do, Kwang-Min;Lee, Jong-Dal
    • 한국방재학회:학술대회논문집
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    • 한국방재학회 2007년도 정기총회 및 학술발표대회
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    • pp.344-348
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    • 2007
  • This study was made a process of earth work amount and earth work transfer etc. This research uses DAS S/W and GIS S/W, comparison and analyze. DAS S/W is a program develop in Korea land corporation. This purpose of this study is presenting a method that at it, can calculate detailed earth work. Also, apply GIS method to DAS S/W using earth work calculation data. when GIS analysis method applied. it can improve the accuracy of earth work calculate method and earth work model's efficiency.

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A Study of Runoff Curve Number Estimation Using Land Cover Classified by Artificial Neural Networks (신경망기법으로 분류한 토지피복도의 CN값 산정 적용성 검토)

  • Kim, Hong-Tae;Shin, Hyun-Suk
    • Journal of Korea Water Resources Association
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    • 제36권4호
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    • pp.633-645
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    • 2003
  • The techniques of GIS and remote sensing are being applied to hydrology, geomorphology and various field of studies are performed by many researcher, related those techniques. In this paper, curve number change detection is tested according to soil map and land cover in mountain area. Neural networks method is applied for land cover classification and GIS for curve number calculation. The first, sample area are selected and tested land cover classification, NN(84.1%) is superior to MLC(80.9%). So we selected NN with land cover classifier. The second, curve number from the land cover by neural network classifier(57) is compared with that(curve number) from the land cover by manual work(55). Two values are so similar. The third, curve number classified by NN in sample area was applied and tested to whole study area. As results of this study, it is shown that curve number is more exact and efficient by using NN and GIS technique than by (using) manual work.

A Study on Spatial Data Simplification Methods for Mobile GIS (모바일 GIS를 위한 공간 데이터 간소화 기법에 대한 연구)

  • 최진오
    • Journal of the Korea Institute of Information and Communication Engineering
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    • 제8권1호
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    • pp.150-157
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    • 2004
  • For the mobile GIS services, it is not acceptable to construct a new map database only for wireless service due to vast cost. But the existing map database cannot be used directly for the services due to narrow wireless bandwidth and shortage of mobile device resources. This thesis proposes spatial data simplification methods, thus, the existing map database enable the mobile GIS services. The proposing methods are based on the existing map generalization techniques. We extend it to mobile environments, and implement. This thesis also includes the issue of discriminative data simplification technique according to display level and map display interface suitable for mobile devices. Research results an estimated by experiments.

An Analysis of Relocation of SW Industries using GIS Flow Map (GIS 흐름도 기법에 의한 소프트웨어 기업 이동의 동태적 분석)

  • Choi, Jun-Young;Oh, Kyu-Shik
    • Spatial Information Research
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    • 제18권3호
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    • pp.41-52
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    • 2010
  • This paper analyzed the interregional flow changes of software (SW) industries using a GIS Flow Map. Employment data for SW enterprise headquarters from 1999 until 2008 were constructed according to the Origin-Destination Matrix, and were mapped and analyzed using the Flow Mapper and ArcGIS Flow Data Model. From the result we can identify the decentralization of interregional flow in SW industries and recognize the possibilities of the larger SW enterprises' employment, the higher locational footlooseness. The GIS Flow Map was identified as useful tool for researching growth, decline and spatial movement of industrial clusters that experience business relocation. This method can be applied to understand and visualize urban spatial changes.

An Application of GIS Technique to Analyze the Location of Bank Branch Offices : The case of Kangnam-Gu , Seoul (GIS기법을 활용한 은행입지분석에 관한 연구 - 서울시 강남구를 사례로 하여)

  • 이희연;김은미
    • Spatial Information Research
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    • 제5권1호
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    • pp.11-26
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    • 1997
  • The purpose of this study is to analyze the locational characteristics of bank branch offices in Kangnam-Gu, Seoul by using Geographic Information System. The number of bank branch offices have sharply increased due to financial liberalization, while the scale of them is getting smaller. The procedure of this research has four steps. First, the spatial distribution of bank branch offices in Seoul is analyzed by the places and time. Second, the spatial variations of bank offices in dong districts of Seoul is explained by factor analysis and multiple regression analysis. Third, the location-allocation model which is embedded within network module in Arc/Info is applied in order to find out optimal location of bank offices in Kangnam-Gu. Finally, the grid module is used in creating the potential surface map for locational sites of new bank branch offices The factors to affect the location of the bank offices contain mainly economic variables including local tax, collUl1ercial area, total establismnent and total employment. The actual locational pattern of bank offices is similar to the idealized locational pattern proposed by the function of min-distance in location-allocation models. In conclusion, this study shows that spatial analysis functions may potentially be improved using GIS technologies. However in order to analyze the location of bank offices more precisely, it should be found out the way to collect more appropriate data, construct computerized base maps, and investigate consumer behaviour and behavioural characteristics of bank themselves..

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Data Provider based buffer management for enhancing access speed to spatial data in client systems (클라이언트의 공간 데이터 접근 속도 향상을 위한 데이터제공자 기반의 버퍼관리기법)

  • 이민우;전우제;박수홍
    • Proceedings of the Korean Association of Geographic Inforamtion Studies Conference
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    • 한국GIS학회 2004년도 GIS/RS 공동 춘계학술대회 논문집
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    • pp.23-29
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    • 2004
  • GIS 관련 산업이 발전함에 따라, 공간 데이터의 상호 운용성이라는 문제가 제기되었다. 현재, 이러한 문제점을 해결하기 위해 OGC는 공간 데이터 및 GIS에 대한 국제적인 표준을 제시하고 있다. 본 연구에서는 OGC의 Simple Features for OLE/COM 표준 사양을 준수하는 GIS 데이터제공자를 구현하여 기존의 공간 데이터베이스와 Geometry 컴포넌트간 공간 데이터에 대한 상호 운용성을 확인하고자 한다. 더 나아가 공간 데이터베이스와 Geometry 컴포넌트로 이루어지는 GIS S/W 시스템 성능 향상을 위한 GIS 데이터제공자 기반의 버퍼관리기법에 대한 설계 및 구현을 하고, 이에 대한 성능 테스트를 하고자 한다. 또한, GIS 데이터제공자 및 버퍼관리기법을 구현하여 앞으로 GIS 데이터제공자 기반의 황용 방안을 제시하고자 한다.

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