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Establishment of New Single Origin Plane Rectangular Coordinate System in Korea

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한국의 새로운 단일원점 평면직각좌표계 설정

Establishment of New Single Origin Plane Rectangular Coordinate System in Korea

김태우1) · 윤홍식2) · 이동하3) · 김건수4) · 고영창5)

Kim, Tae Woo · Yun, Hong Sik · Lee, Dong Ha · Kim, Gun Soo · Koh, Young Chang

Abstract

As a worldwide trend, the spatial information that is established by country, institution and purpose is integrated into the data with a single spatial reference to improve the data connectivity and usability. In this study, a new national single origin plane rectangular coordinate system was studied to efficiently respond to the changes in the spatial reference according to the introduction of a new national geodetic standard and to the demand of seamless data service in the spatial information sector. For this purpose, the Korean Peninsula was set as the projection region and the projection distortion in the projection region was analyzed. The projection parameters were defined to homogenize and minimize the projection distortion, and their standardization and registration on the international organizations were conducted. The study on the required optimal projection equation resulted in the Hooijberg projection equation and projection parameters (φ λ φ λ , , Κ, Ν, Ε) resulted in 38° N and 128° E projection origin, and a scale factor of 0.99924. The proper false northing and easting were 700,000m N and 400,000m E, respectively, considering the introduction of country station index system.

Keywords : Projection System, Projection Parameters, Projection Equation, Map Grid Coordinate System, Country Station Index System

초 록

최근 전 세계적으로 국가별, 기관별, 목적별로 다양하게 구축된 공간정보를 단일한 위치기반으로 하는 데이터 로 통합함으로써 각 자료 간 연계성 및 활용성을 높이고 있다. 본 연구에서는 새로운 국가측지기준의 도입에 따른 위치기준의 변화와 공간정보 분야의 seamless 데이터 서비스 요구에 효율적으로 대응할 수 있도록 새로운 국가 단 일원점 평면직각좌표에 대한 연구를 수행하였다. 이를 위해 한반도 전역을 투영영역으로 설정하고 투영영역 내 발 생하는 투영왜곡을 분석함으로써 이를 균질화 및 최소화할 수 있는 투영파라미터를 정의하였으며, 이에 대한 표 준화 및 국제기구 등록방안을 제시하였다. 연구의 결과, 국가 단일원점 평면직각좌표계를 위한 최적의 투영식은 Hooijberg 투영식으로 분석되었으며, TM 투영을 위한 5가지 투영파라미터는 위도(φ λ ) 38° N, 경도(φ λ ) 128° E, 축척 계수(Κ) 0.99924로 각각 분석되었다. 또한, 투영원점(φ λ φ λ , )에 대한 가수값(false Northing & Easting)은 국가지점번 호제도의 도입을 고려하여 북쪽방향 700,000m, 동쪽방향 400,000m로 각각 설정하는 것이 적합하였다.

핵심어 : 투영체계, 투영파라미터, 투영식, 그리드좌표계, 국가지점번호체계

183 1) Regular Member, Dept. Civil & Environmental Engineering, Sungkyunkwan University (E-mail:[email protected])

2) Corresponding Author, Regular Member, Dept. Civil & Environmental Engineering, Sungkyunkwan University (E-mail:[email protected]) 3) Regular Member, Dept. Civil & Environmental Engineering, Sungkyunkwan University (E-mail:[email protected])

4) Regular Member, Geographic Information Division, National Geographic Information Institute (E-mail:[email protected])

5) Regular Member, Geospatial Imagery Information &Photogrammetry Division, National Geographic Information Institute (E-mail:[email protected])

This is an Open Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://

creativecommons.org/licenses/by-nc/3.0) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.

수치

Table 1. Tissot indicatrix ellipse of distortion Reference surface  Projection plane
Fig. 4는 UTM(Universal Transverse Mercator) 투영체계에Fig. 2. Workflow of a projection choice
Fig. 4. UTM extent of the region to be mapped (NGII,  2011)
Table 4. Comparison of the Projection parameters, between  UTM 51.75 Zone and modified TM Projection System
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