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http://dx.doi.org/10.5394/KINPR.2014.38.3.227

dLoran Measurement in Yeongil Bay using the Pohang Loran-C (9930M)  

Lee, Chang Bok (Korea Research Institute of Standards and Science)
Lee, Jong Koo (Korea Research Institute of Standards and Science)
Lee, Young Kyu (Korea Research Institute of Standards and Science)
Hwang, Sang-Wook (Chungnam National University)
Lee, Sang Jeong (Chungnam National University)
Yang, Sung-Hoon (Korea Research Institute of Standards and Science)
Publication Information
Journal of Navigation and Port Research / v.38, no.3, 2014 , pp. 227-232 More about this Journal
Abstract
There are three essential components of eLoran: dLoran, data map of ASF, and the Loran data channel. Particularly, dLoran improves navigation accuracy, which is the core technology of eLoran systems. The requirement of HEA's absolute accuracy, less than 20 meters, can be satisfied via dLoran measurements and their corrections. In this study, dLoran measurements using the Pohang Loran-C (9930M) station signal were conducted at Yeongil Bay. We established a dLoran reference station at Homigot Management Office for navigation aids within the Bay. We estimated the effectiveness of the dLoran between the reference site (Homigot Management Office) and a test site (Heunghwan beach) by measuring TOAs. We verified that the TOA data measured at these two regions were highly correlated. The temporal differences in the data between the dLoran reference station and test site were about 10~30 ns per day, which is equivalent to a ranging error of 3~9 m. This result shows that eLoran can meet the requirement of 8~20 meters position accuracy for maritime HEA by correcting the ASF at the user's receiver.
Keywords
eLoran; HEA; dLoran; position accuracy; TOA;
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