Go to the main menu
Skip to content
Go to bottom
REFERENCE LINKING PLATFORM OF KOREA S&T JOURNALS
> Journal Vol & Issue
Journal of Korean Society for Geospatial Information System
Journal Basic Information
Journal DOI :
The Korean Society for Geospatial Information System
Editor in Chief :
Volume & Issues
Volume 3, Issue 2 - Dec 1995
Volume 3, Issue 1 - Jun 1995
Selecting the target year
Precise DGPS Positioning Using Two GPS Receivers
Kang, Yong-Q. ; Lee, Moon-Jin ;
Journal of Korean Society for Geospatial Information System, volume 3, issue 2, 1995, Pages 15~28
The GPS positioning involves not only 'natural' errors associated with the satellites position errors, refraction of EM wave in the ionosphere, etc., but also 'artificial' errors associated with the operation of S/A (Selective Availability). In this paper, we present the principles, accuracies and applicabilities of our personal DGPS method, which employs the position-correction method on the GPS positionings data collected at the reference and the remote sites. The essential requirement of our DGPS method is that two GPS receivers should utilize the identical Navstar satellites at the same time. The positioning error (1 drms) of the stand-alone GPS is of an order of a few tens meters, while that of horizontal position by our DGPS method is about 1m and that of vertical position is about 2m We applied out DGPS technique in positioning moving objects, and obtained satisfactory results in tracking the trajectories of a car on the road and the those of drifters in the sea.
The Application of SQL in Terrain Information Analysis for Route Design
Kang, Joon-Mook ; Yoon, Hee-Cheon ; Lee, Hyung-Seok ; Lee, Sung-Soong ;
Journal of Korean Society for Geospatial Information System, volume 3, issue 2, 1995, Pages 29~42
Route design in topographical plane map brings many problems in efficiency and requires much time and labor by hand Recently, the active studies of efficient route design method using 3-D terrain information are being developed according to increasing concentration on GSIS. In order to analyze terrain information for route design efficiently, this study presents objective and overall datum by applying SQL in construction and analysis of database and the possibility of three-dimensional terrain information analysis, This study generates 3-D base map on topographical map of scale 1:5,000 and acquires terrain information that have various thematic map data; contour, land use, roadway, and drange. This is a study on the application of SQL in route design and construction of the terrain information that linked by graphic datum of completed topographical map and attributed datum of database. As the result of this study, we can produce promptly and efficiently design datum of profile annotation, cross section, and volume computations to the preliminary route for route design and apply this efficient method to route design by understanding visual DTM which is composed of the roadway and the natural scene after design
A Study on the Development of Land Suitability Analysis System using GSIS in the Landuse Planning
Lim, Seong-Hyeon ; Cho, Gi-Sung ;
Journal of Korean Society for Geospatial Information System, volume 3, issue 2, 1995, Pages 43~61
The national land use plan that targets the whole national land and all kinds of urban plans that targets a city or a part of city must be performed continuously now and after that. Therefore, the importance of land use plan, that is included in those plans, is very big and crucial. This study scrutinizes the detail zoning land suitability analysis which bases on urban basis plan and the GSIS application plan about allocation, applied various basic theory which is arranged in that course to study area, and try to develop the land use suitability analysis system, a application system The programing language used in system development is the AML of ARC/INFO. On this study, the results divide into four parts. First, we develop the land use suitability analysis system and can simplify and automatize a complicated analysis course and this system will be more useful to the land use suitability analysis. Second, the analysis range is expanded, considering the circumstance environmental factor of planning area outside. So we can implement more comprehensive analysis. Third, we apply a precedency conception and a legal restrictive element that base on urban characteristics and urban space structure theory to this study, develop a computerized method about distributive method, and can allocate the detail zone in the various ways. Finally, the next studies that can clear the detail zone suitability criteria and the correlation of the relationship of materials are essential to improve the accuracy and confidence in this analysis.
A Study on the GIS Feature and Attribute Coding Scheme
Song, Hyun-Seung ; Lee, Byung-Kil ; Park, Seong-Bok ; Lee, Sang-Zee ;
Journal of Korean Society for Geospatial Information System, volume 3, issue 2, 1995, Pages 63~74
The most important thing for the national GIS development is considered to be the standardization, especially the development of the standard coding scheme for the GIS features and attributes. The comparative study on those of the several international transfer standard is, therefore, very meaningful. In this paper we analyzed the features and attributes coding catalogue for the three different exchange standards; SDTS, DIGEST and SP-57. And also the new coding scheme is proposed as the unified standard frame to be used for all the GIS related application and the digital product
A Examination about Application Possibility of GPS in Determination of Astronomic Latitude and Longitude
Kang, Joon-Mook ; Oh, Won-Jin ; Sohn, Hong-Gyoo ; Lee, Young-Wook ;
Journal of Korean Society for Geospatial Information System, volume 3, issue 2, 1995, Pages 75~82
The calculation of astronomic latitude and longitude have been carried by astrolabe, theodolite. Conventional procedures to determine it require clear weather conditions, time high cost. So we need more effective method to decide them. The objective here is to present method to computate astronomic latitude and longitude by mixing GPS observation result and geodetic height. Also to decide geodetic height we used GPS/leveling, DMA(n=m=180) and OSU91A(n=m=360) methods. Compared to conventional procedures we could obtain astronomic latitude and longitude using GPS by
difference. If the precise geoid model of Korea will be developed, we can compute astronomic latitude and longitude effectively using GPS observation only.
A study on the Open System Environment and NGIS Standards
Jin, Heui-Chae ;
Journal of Korean Society for Geospatial Information System, volume 3, issue 2, 1995, Pages 83~90
The standardization of NGIS emerges as an important subject because of the needs for sharing information and assuring of information inter-operability. The standardization could be developed by refering OSE/RM, which is promoted internationally, that the corresponding national standards are required. The standardization of NGIS, that has been promoting, consists of standardization of national electronic base-map and common data exchange format. The process for standardization of base-map has been taken in the area of feature-attribute code and data modeling. In the area of common data exchange format, we have been accepted the accommodation of international standards as the national standard
An Analysis of Mixed Pixel in the Remote Sensing Image Data
Kim, Jin-Il ; Park, Min-Ho ; Kim, Sung-Chun ;
Journal of Korean Society for Geospatial Information System, volume 3, issue 2, 1995, Pages 91~100
The aim of this study is to classify mixed information in a pixel of a remote sensing image data (in the case of SPOT HRV's band
). First, the loss of information and the uncertainty of mixed pixel are examined. To solve the problems, methods by fuzzy sigmoid function and back-propagation neural network are suggested. Then. the study simulates and comparatively analyzes the two methods.
Decision Making Support System for Water Supply Facilities Planning using Geographic Information System
Ha, Sung-Ryung ; Kim, Ju-Hwan ;
Journal of Korean Society for Geospatial Information System, volume 3, issue 2, 1995, Pages 101~113
In pipeline planning, the systematic and reasonal management of topographical and spatial data are needed in order to omprove the availibilities for data analysis and the effective combinations of spatial informations. According to that fact, DBMS (Database Management System) and DSS(Decision making Support System) have to be developed for the planning of water supply system Also, the economic selection for harmonious delivery of water to target area, since the alternatives of pre-designed pipeline are influenced by hydraulic stability and geographic characteristics. In this study, GIS technique for water supply planning and management which stores graphic features and attributes as digital data sets is considered and engineering application programs are integrated for effective planning of water supply system. Decision making support system based on analyzing technical, Social and economical aspects is developed for the extension of water supply facilities and pipeline configurations. Especially, Hydraulic, land-use and economic influences are considered as important factors for the purpose of developing the system. Hydraulic analysis program(SAPID) for pipeline flow which is already developed in Water Resources Research Institute and economic analysis program(ECOVEL) are integrated with GIS for resonable decision making. Every possible aspects in pipeline planning for water supply is reviewed and the applicabilities of developed system into the field are evaluated
A Suggestion of a Spatial Data Model for the National Geographic Institute in Korea
Kim, Eun-Hyung ;
Journal of Korean Society for Geospatial Information System, volume 3, issue 2, 1995, Pages 115~130
The National Geographic Institute(NGI), a national mapping agency, has begun to digitalize national base maps to vitalize nation-wide GIS implementations. However, the NGI's cartographic database design reflects only paper map production and is considered inflexible for various applications. In order to suggest an appropriate data model and database implementation method, approaches of two mapping agencies are analyzed: the United State Geological Survey and Ordnance Survey in the United Kingdom One important finding from the analysis is that each data model is designed to achieve two production purposes in the same time : map and data. By taking advantageous features from the two approaches, an ideal model is proposed. To adapt the ideal model to tile present situation in Korean GIS community, a realistic model is generated, which is an 'SDTS-oriented' data model. Because SDTS will be a Korean data transfer standard, it will be a common basis in developing other data models for different purposes.
The Development of Helicopter Aviation Information System for Safe Flight
Kang, Tae-Ho ; Suh, Sung-Chul ; Lee, Jong-Hun ;
Journal of Korean Society for Geospatial Information System, volume 3, issue 2, 1995, Pages 131~136
In this paper, We explain the development of helicopter avation information system which provides the current location and other pre-saved informations in order to guarantee the safe aviation. The system we developed has the functions such as displaying digital map data and current location, route planning, displaying the rate of deviation, calculating and displaying the cross sectional view through the route and providing a real-time speed, heading and other informations. In this system, we use GPS to get the current location, made the 1:250,000 digital map to display the current location and made the cross sectional view from the DEM(Digital Elevation Mode)) data to help safe aviation. This system provides many kinds of route setting methods by using UTM coordinates, Lati. Longi, coordinates, database of heliport location, scanned map, etc., and displaying the heading and distance. Moreover, it also has a characteristic of providing a consistent user interface.
GOOD 2.0 : a Geographical Data Manager using Spatial indices
Oh, Byoung-Woo ; Han, Ki-Joon ;
Journal of Korean Society for Geospatial Information System, volume 3, issue 2, 1995, Pages 137~149
A spatial index is necessary to support an efficient search in a geographical information system (GIS) that is important in these days. In this paper, we design and implement a geographical data manager, called GOOD (Geo-object Oriented Data Manager) 2.0, by extending GOOD 1.0 with a spatial index processing module. That is, R-tree and R*-tree are used as a spatial index in this paper to make an efficient search possible. In addition, this paper conducts a performance evaluation to measure the improvement in search efficiency and analyzes the results of the performance evaluation. When the performance evaluation is carried out, we consider various environment factors to allow an GIS administrator to use the results as a basic data in selecting an appropriate spatial index.
Safety Inspection Surveying using Change Detection Technique
Choi, Chul-Ung ; Khak, Jae-Ha ; Kang, In-Joon ;
Journal of Korean Society for Geospatial Information System, volume 3, issue 2, 1995, Pages 151~158
Change detection, image differencing technique, is the most widely used in a variety of image environments. The digital terrain model and digital images have the same data structure. This study applied digital terrain model and change detection technique for inspecting the deflection of the structure. Authors make digital terrain model from triangular irregular network(TIN) by leveling data and suggest to possibility recognize modification part and volumes by digital terrain model and change detection technique. Authors can reduce testing materials and man power, and displayed his modification part.
A Study On the Accuracy Analysis of 3-Dimensional Position using Digital Image
Yeu, Bock-Mo ; Sohn, Duk-Jae ; Yom, Jae-Hong ; Baek, Sang-Ho ;
Journal of Korean Society for Geospatial Information System, volume 3, issue 2, 1995, Pages 159~172
This study aims to apply digital photogrammetric methods on the close range photogrammetry. To get a three dimensional position with digital photogrammetric method, scanning, image matching, and bundle adjustment are performed. Comparing the three dimensional position computed by digital photogrammetric methods with ground survey values, the errors can be detected. Analyzing the errors, it is possible to present a new digital photogrammetric method for the close range photogrammetry. Image matching method used in this study is area-based pixel unit and subpixel unit method. As a result of the study, three dimensional position error is 3.32mm and the error in the single coordinate axis direction is 0.76mm in pixel unit and in subpixel unit, respective error is 3.98mm and 0.73mm
Analysis of Suitable Site for Farmastead using GIS
Rhee, Shin-Ho ; Oh, Moo-Young ; Choi, Jin-Young ; Kim, Han-Joong ;
Journal of Korean Society for Geospatial Information System, volume 3, issue 2, 1995, Pages 173~181
Geospatial analysis method was applied for classification of suitable site for farmstead. Typical urban suburb and rural area was selected and analyzed, that is Cheongwon County in Chungbuk Province, South Korea. In this study, suitable site for the farmstead was classified by five grade in the other site except suitable area for paddy field, upland, settlement and Green Belt, regulated area for development around the city. Digital Elevation Model(DEM), detailed soil map, administration boundary map, stream map and Green Belt map where digitized and scoring tables were composed with scoring standard. In site verification, Geospatial Information System(GSIS) was quite good tools for suitable site classifying for farmstead causing farm household income increasing, environmental impact decreasing and scientific site selection
A Research on System Integration for National GIS Technology Development Methodology
Seo, Bo-Hwan ;
Journal of Korean Society for Geospatial Information System, volume 3, issue 2, 1995, Pages 183~197
The broad meaning of system integration is to satisfy user requirement, and to secure and offer Hardware, Software, network, System development, maintenance, education and manpower in his own responsibility for successful business. But the basic concept of system integration is not justified and the methodology of propel procedure is not established. Therefore, in this thesis. first, We established the bagic concept of system integration in practical view. second, We modeled the propel procedure of system integration with many large project examples in view of up to date IT (information technology) view. We can enhance the compatative advantage by liking organizational strategy and IT and executing GIS project in view of system integration
A Development of an Optimal Feeder-Bus Service Area
Rhee, Sung-Mo ;
Journal of Korean Society for Geospatial Information System, volume 3, issue 2, 1995, Pages 199~211
Bus, Which is together with subway the main part of public transportation modes in the city, is reviewed for the development of an optimal feeder-bus service area. Based on the IDRISI of GIS package, and taking into account of the convenience of downtown-oriented public transportation users at peak time, a model for the development of feeder-bus service area and a solution and introduced. Major result in this study is as follows: Development is given to a model that is designed to overcome the shortage of the existing models, which has limits in simulating the real situation; Variables were used in combination so that bus and subway route, station spacing, and operating frequency can be determined simultaneously, which enables to elucidate the mutual relationship and the structure in public transportation system. A model for feeder-bus area development is also given applied to determination and opening of subway and urban express bus route and new transportation systems. The model developed in this paper is useful in the case of extension and opening of subway and urban express bus route and new transportation Systems.
Map Matching Algorithm for Self-Contained Positioning
Lee, Jong-Hun ; Kang, Tae-Ho ; Kim, Jin-Seo ; Lee, Woo-Yeul ; Chae, Kwan-Soo ; Kim, Young-Gi ;
Journal of Korean Society for Geospatial Information System, volume 3, issue 2, 1995, Pages 213~220
Map Matching is the method for correcting the current position from dead reckoning in Car Navigation System. In this paper, we proposed the new map matching algorithm that can correct the positioning error caused by sensors and digital map data around the cross road area. To do this, first we set the error boundary of the cross road area by combining the relative error of moving distance and the absolute error of road length, second, we find out the starting point of turning within the determined error boundary of the cross point area, third, we compare the turning angle of the car to the angle of each possible road, and the last, we decide the matched road. We used wheel sensor as a speed sensor and used optical fiber gyro as a directional sensor, and assembled the sensors to the notebook computer. We testified our algorithm by driving the Daejeon area-which is a part of south Korea-as a test area. And we proved the efficiency by doing that.
Implementation of DGPS Postprocessing System by Offset Distance
Choi, Hyun-Ki ; Lee, Yong-Kuk ; Suk, Bong-Chool ; Kim, Hak-Il ;
Journal of Korean Society for Geospatial Information System, volume 3, issue 2, 1995, Pages 221~225
Unauthorized users cant acquire and enough accuracy in applications of the navigation or geodesy by the single GPS positioning technique because of the measurement errors and US DoDs intentional errors. The solution of these restrictions is the Dgps technique that is to eliminate the common errors between the reference station and the desired point and can achieve a high accuracy. DGPS postprocessing system is implemented by using the offset distances between the known position of a reference station and the position obtained from GPS satellite data. The preliminary experiments include static tests and a dynamic test of cruising a ship.