Sang-Ki Hong

Anyang University, Korea

Geographic Information Dissemination

Network in Korea

2002. 11. 13

Contents

1. History of NGIS

2. Major Achievments

3. Vision of NGIS Masterplan

4. Objectives

5. Investment Plan

6. NGIS Laws and Regulations

7. Context

8. Background

9. Conceptual Scheme

10. How to Find and Download Spatial Data

11. Pilot Project

12. Distributed Network Building

13. Main Project (1st stage)

14. Current Project

15. Dissemination Model

16. System Development

17. System Architecture

18. Policy Implications

• Early 1990s: Development of various GIS databases begun

• Mid 1990s: Underground gas explosion accidents in Seoul and Daegu accelerated GIS development

• May 1995: 1st NGIS Master Plan established

1. History of NGIS 1

1. History of NGIS (cont’d) 2

• July 2000: NGIS Act and its Enforcement Decree enacted

• October 2000: 2nd NGIS Master Plan (2001~2005) established

• December 2000: 1st NGIS Master Plan completed

• January 2001: Implementation of 2nd NGIS Master Plan started

2. Major Achievements 3

• Completion of the National Digital Base Map

• Construction of various Thematic maps

• Construction of the Underground Facility Database

• Construction of Cadastral Map

• Development of the Applications in Public Sector

• Development of core GIS Technologies

• Human Resources Development

• Standardization

• Support for GIS Research and Development

3. Vision of NGIS Master Plan 4

For the fast and convenient access to National

Spatial Information, the “Digital National Land”

shall be achieved by the construction of National

Spatial Data Infrastructure

4. Objectives 5

• Establish the basis for Digital National Land

• Make geographic information available on the internet for use by all people

• Develop core technology and promote GIS industry

• Continue improvement of information infrastructure

5. Investment Plan in 2nd Phase of NGIS 6

Basic geographic information (framework data) 375

GIS applications development 611

Geographic information dissemination network 20

GIS technologies development 67

GIS industry promotion 20

GIS standardization 7.5

GIS human resources development and public relations 12

R&D support 9.8

TOTAL 1,125

(unit: million dollars)

6. NGIS Laws and Regulations 7

• Purpose (Article 1)

• NGIS Master Plan (Article 5)

• NGIS Committee (Article 8)

• Establishment of NGIS Infrastructure (Chapter 3)

• Construction and Management (Chapter 4)

• Utilization and Distribution (Chapter 5)

8

1995 20001990

Increase in demand Construction of DB Utilization of Data

NGIS Project(1st Phase)<Construction of National

Spatial Databases>

NGIS Project(2nd Phase)<Utilization of DigitalSpatial Databases>

Building Geog. Info. Dissemination Network

Construction

Transporta-tion

Environment

Agriculture

Culture

TourismEtc.

IncreasedNeed for GIS

GIS R&D

Digitalization ofSociety

GIS DBConstruction

GISApplications

7. Context

Attribute Data Digital Maps Imagery

Past Situation

No Dissemination Network

Hard/Impossible to Locate

Existing Data

Duplication in

DB Building

Difficulties in

Purchasing Data

National Information

Dissemination Network

Clearinghouse Mgmt System

Network

Building

Efficient Linkage between

Demand and Supply

Basis for Better Utilization of

Geographic Information

Better Access and Sharing of

Geographic Information

98. Background

9. Conceptual Scheme 10

Clearinghouse

Geo Info DBMetadata

Clearinghouse

Geo Info DBMetadata

Payment Gateway

Internet

▪ Public Sector

▪ Private Sector

User

Download

Nat’l Geog. Information Clearinghouse

MOCT

Gateway

▪ Central and Local Governments, ▪ Public Agencies

Geodata SupplierReturn Result

Search

Data UploadingPayment

Electronic Payment

Payment

Clearinghouse

Geo Info DBMetadata

10. How to Find and Download Spatial Data 11

2. Search Data3. View Search

Result6. Purchase

1. Connect to

Homepage

4. View Metadata 5. Preview Map7. Download Data

11. Pilot Project 12

Building CentralizedDissemination Network

Construction ofMetadata DB

Development ofMetadata Editor

R&D

Spatial Extent

National Clearinghouse

2000. 7. 12 - 2001. 6. 7

Project Period Contents

NGIC(MOCT)Development of

Metadata Standard

CHNode

CHNode

CHNode

(Pilot Project) ( Main Project )

User

DataSupplier

DataSupplier

DataSupplier

DataSupplier

UserNational

Clearinghouse

National

Clearinghouse

DataSupplier

DataSupplier

DataSupplier

DataSupplier

12. Distributed Network Building 13

13. Main Project (1st stage) 14

Building ClearinghouseNode Network

Expansion of existingsystem

Construction ofMetadata DB

Development ofPortal Site

R&D

Spatial Extent

National Clearinghouse

CH Node

2001. 8. 1 - 2002. 6. 26

Project Period Contents

NGIC(MOCT)

CH Node (NGI)

CH Node(Daegu)

CH Node(Incheon)

14. Current Project 15

Building IntegratedDissemination Network

Expansion of existingsystem

Construction ofMetadata DB

Mgmt of existingsystem

R&D Support

Public Relations

Spatial Extent

National Clearinghouse

Existing CH Node New CH Node

2002. 9. 30 - 2003. 8. 25

Project Period Contents

NGIC(MOCT)

CH Node (NGI)

CH Node(Daegu)

CH Node(Incheon)

New CH Node(Daejeon)

New CH Node(Gwangju)

New CH Node(Busan)

15. Dissemination Model 16

Types of Geographic Information Dissemination Model

Integrated Model

• Integration of file and DB-based modelsPublic Access to Geodata Files

(G2C Service)Geodata Sharing(G2G Service)

• Application of OGC Standard• Component-based S/W• Electronic Payment• Security Technology

Catalog Service / DRMSecurity / Electronic Payment

OGC Spec. Simple FeatureComponent S/W

• InternetInternet Intranet

• File and DB service• Expandable system architecture

Geodata File SearchAnd Download

Spatial DB LayerSharing among orgs.

• CH: Mgmt, Stat. Data• CH Node: Geodata Files, Metadata, Spatial DB

CH: Mgmt, Stat. DataCH Node: Geodata Files, Metadata

CH Node: MetadataSpatial DB Server: Spatial DB

• Spatial DB Access thru Map Browser andGeodata File download

User’s GIS S/W to use

Geodata filesDisplay thru Web Browser

• Users can choose the type of desired serviceSimple and Efficient

No restrictions on Data formatAdvanced sharing technology

Complicated System

Goal

Techno-logies

Network

Service

Data Store

Use

Charac-

teristics

Spatial DB-basedFile-based

15. Dissemination Model (cont’d) 17

Technologies Involved

KFTC

GeodataDownload

Metadata Registration

Elec. Payment

National Clearinghouse Clearinghouse Nodes

Metadata Search

Geodata Supplier

User

•Active X •Simple Feature Spec.

Catalog Service Standard (Z39.50)

•Spatial DB Engine•DP(Data Provider)

•DRM•SSL

XML

PKIAuthentication

PKI/SSL- Encryption for Electronic Payment

DRM (Digital Right Management)- Encryption for transmitting geodata

Active X - Client Interface Technology that

supports GIS Functions in Web Browser

XML- Used in Metadata Editor

Simple Feature Spec. - Used for Map Browsing Function

Catalog Service - Standard for Metadata Search

DP (Data Provider) - Access to Spatial DB and Download

Spatial DBMS for GIS- Mgmt of Spatial and Attribute Data,

Spatial Query and Operation

15. Dissemination Model (cont’d) 18

Detailed Structure of Integrated Dissemination Model

Spatial DB Server: Vector, Raster

File-only DB Server

• WKB Type(Well-Known Binary)

Clearinghouse Node(Spatial DB + Files)

• WKB to Shp Library

Information User

Local Store(Geodata Files)

• File Download

Web Service

Map Browser(Simple Feature Spec.)

ShpDXF

Geotiff

Spatial DB

Internet(TCP/IP)

Shp

DP(Data Provider)

• Shp DP • DXF DP(Library)• GeoTiff DP(Library)

16. System Development 19

Data Flow

CH Node(Spatial DB+Files)

NGIC (NGIS Div. In MOCT)

CH Node(File-based) Geodata Users

Geodata Suppliers

• Metadata• Geodata Files

❖History Info

❖List of Registered Geodata

❖History Info

❖List of Registered Geodata

❖Spatial DB Layer

❖Metadata

❖Spatial DB Layer

❖Metadata

❖Geodata Files

❖Metadata

❖Geodata Files

❖Metadata

• Metadata• Geodata Files • Spatial DB

• Mgmt Data• CH Node List• Gov. Geodata

• Metadata• Geodata Files• Spatial DB

16. System Development (cont’d) 20

Detailed Design

Registration and Mgmt of Geodata

Map Browser

OGISGeometry

Data Provider A

DB - A

Data Provider B Data Provider C

DB - B DB - C

WKB

Map Display

Data Access

Data Conversion

Data Conversion

Module

CH Node Type B

NGIC

SupplierAuth.

Meta-data

Spatial DB

Meta-data

DBMS(shp/dxf)

CH Node Type A

Files

Spatial DB(shp)

Geodata Registration and Mgmt Service

Register

dxf

shp

Metadata Editing

Geodata Type

Map Browser Design

16. System Development (cont’d) 21

Application Functions

National Clearinghouse

User Registration Log in

Metadata Geodata

Supplier Approval

Search ResultsStatistics

GeodataDownload

Metadata query

Gateway User Registration

User

Map Browsing Geodata Purchase

CH Nodes

Metadata SearchApproval of Geodata

Registration

Geodata Supplier

Geodata/Metadata Registration

Geodata Upload

KFTC(Payment GateWay)

Purchase Elec. Payment

17. System Architecture 22

I N T E R N E T

National Clearinghouse

New CH Nodes(3 Sites) Existing CH Node(NGI, Daegu) Existing CH Node (Incheon)

Geodatauser

GeodataSupplier KFTCWeb Server

HP9000L1000

440MHz×2

RAM 1GB

HDD 36GB

DB Server

HP9000L2000

440MHz×4

RAM 2GB

HDD 200GB

Fire Wall Server

SUN Ultra60

450MHz×2

RAM 512MB

HDD 18GB

PlotterCSU Router

Switching Hub

Printer

IDS Server

DELL PE4400

933MHz×2

RAM 1GB

HDD 54GBUser PC

Staff NoteBook

Satelite1955-s801

Pentium 4 2.2MHz

RAM 512MB

HDD 40GB

SMS(Net) Server

DELL PE4400

933MHz ×2

RAM 1GB

HDD 54GB

Fire Wall Server

SUN Ultra10

440MHz

RAM 1GB

HDD 18GB

SMS Server

DELL PE4400

933MHz ×2

RAM 1GB

HDD 72GB

Fire Wall Server

SUN Ultra60

450MHz×2

RAM 512MB

HDD 18GB

CSUCSU CSU

RouterRouter Router

Switch HubSwitch HubSwitch Hub

Web Server

HP NS Lxr8500

700MHz×2

RAM 1GB

HDD 54GB

GIS Server

DELL PE4400

933MHz×2

RAM 1GB

HDD 54GB

DB Server

HP NS Lxr8500

700MHz×2

RAM 1GB

HDD 54GB

Web Server

HP9000A500

440MHz ×2

RAM 1GB

HDD 36GB

DB Server

HP9000L2000

440MHz×2

RAM 1GB

HDD 219GB*

DB Server

IBM 620 - 6F1

600MHz×2

RAM 1GB

HDD 219GB

Web Server

IBM x250

700MHz×2

RAM 1GB

HDD 216GB

Fire Wall Server

IBM x232

1.4GHz×2

RAM 512MB

HDD 18.2GB

18. Policy Implications 23

• Commitment and investment are necessary for successful implementation of the dissemination network

• Better-informed and timely decision can be made through the use of this network

• Main problem: setting up an environment for information sharing, i.e., policy principles need to be set up

• Other problems such as pricing of data, copyrights, security concerns need to be clarified

Thank You