Uncertainty Analysis of BAG by GNSS Correction

In the recent marine sector, the development and standardization regarding S-100, which is the universal hydrographical data model standard for development of marine space information, was progressed, and for the effectiveness of marine chart production work and the multi-purpose use of water level data in S-100, S-102(Bathymetric 2019년 06월 04일 접수 Received on June 04, 2019 / 2019년 07월 09일 수정 Revised on July 09, 2019 / 2019년 08월 27일 심사완료 Accepted on August 27, 2019 * 본 연구는 국립해양조사원 수로측량과에서 발주한 2018년도 “연안해역정밀조사(남해군 동부)”사업의 지원으로 수행되었습니다. 1 한국해양조사협회 Korea Hydrography and Research Association(ocy@khra.kr) 2 해양정보기술 Marine Information Technology Corp 3 ​국립해양조사원 Korea Hydrographic and Oceanographic Agency 4 부경대학교 공간정보공학과 Dept. of Spatial Information Engineering, PKNU University ※ Corresponding Author E-mail : cuchoi@pknu.ac.kr Uncertainty Analysis of BAG by GNSS Correction 2 Surface grid) standard development and various studies of BAG formats combined with water level and uncertainty, property information is being progressed. Since the water level information that is important in the operation of the ship is provided based on S-102, the calibration method of the location information when producing S-102 is an important factor in deciding the water level. In this study, the hydrographical surveying was conducted by piloting the standardized method for the production of S-102 in Korea, and have compared the accuracy of water level information according to the GNSS post treatment calibration method. As a result of comparing the water level in 2 places in the rocky terrain of the study area, the northern water level of Namu-do was shown as DL 0.79∼0.83m, the eastern water level of Daeho-do was DL 12.63∼12.91m, and the horizontal position errors of the intermittent sunshine water level were confirmed to be within 1m. As a result, the intermittent sunshine water level according to the location calibration method when producing the BAG was confirmed that it was in the available range for a ship’s safe voyage. However, the accuracy verification for the location of the ship when conducting hydrographical surveying was judged that there is a need for a various additional study about regional characteristics and environment factor.