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논문 기본 정보

자료유형
학술대회자료
저자정보
Donghui Yu (Catholic University of Pusan) Chansik Park (Chungbuk National University) Sangjeong Lee (Chungnam National University) Sunghoon Yang (Korea Research Institute of Standard and Science (KRISS)) Changbok Lee (Korea Research Institute of Standard and Science (KRISS))
저널정보
제어로봇시스템학회 제어로봇시스템학회 국제학술대회 논문집 ICCAS-SICE 2009
발행연도
2009.8
수록면
4,446 - 4,449 (4page)

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There has been interest in recent years in backup systems in case of the loss of GPS in South Korea. The Ministry of Maritime Affairs and Fisheries had conducted the feasibility study using DGPS beacon signal and recently Ministry of Land, Transport and Maritime Affairs started to examine eLoran (enhanced Loran) system, especially in the Harbor Entrance and Approach (HEA). In order to meet this HEA accuracy requirement, user receivers must employ Additional Secondary Factors (ASFs) in calculating the user’s position. ASFs are time adjustments that modify the receiver’s Times of Arrival (TOA) to account for propagation over non-seawater paths. As these ASFs vary both spatially and temporally, both variations need to be compensated for to meet the HEA accuracy targets. In the proposedeLoran system, the spatial variations are accounted for through the use of grids of ASF values that are known by the receiver a priori. The temporal variations are accounted for by operating in differential mode; specifically, a nearbyreference monitor station estimates and broadcasts the temporal changes in the ASFs relative to the published spatial grids. The U.S. Coast Guard Academy is conducting research and proof-of concept demonstrations of the ability of enhanced Loran to support the HEA navigational requirements. In this paper, we outline the methodology to import and deploy the eLoran system in South Korea; especially, ASF grid development techniques and location of monitor sites and operations in Busan Harbor referring to the efforts of The United States.

목차

Abstract
1. INTRODUCTION
2. PRELIMINARY SURVERYS
3. ASF MAP FOR SOUTH KOREA
4. ANALYSIS OF MULTIPLE MONITOR SITES
5. CONCLUSIONS
REFERENCES

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