JICCE (한국정보통신학회)
Current Result Document :
| 한글제목(Korean Title) |
Propagation Delay Modeling and Implementation of DGPS beacon signal over the Spherical Earth |
| 영문제목(English Title) |
Propagation Delay Modeling and Implementation of DGPS beacon signal over the Spherical Earth |
| 저자(Author) |
Dong-Hui Yu
Sung-Hyun Weon
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| 원문수록처(Citation) |
VOL 05 NO. 04 PP. 0295 ~ 0299 (2007. 12) |
한글내용
(Korean Abstract) |
|
영문내용
(English Abstract) |
This paper presents the ASF(Additional Secondary Factor) modeling of DGPS beacon signal. In addition to DGPS’s original purpose, the feasibility to utilize DGPS system for timing and navigation has been studied. For timing and navigation, the positioning system must know the accurate time delay of signal traveling from the transmitter to receiver. Then the delay can be used to compute the user position. The DGPS beacon signal transmits the data using medium frequency, which travels through the surface and cause the additional delay rather than the speed of light according to conductivities and elevations of the irregular terrain. We introduce the modeling of additional delay(ASF) and present the results of implementation. The similar approach is Locan-C. Loran-C has been widely used as the maritime location system and was enhanced to E-Loran(Enhanced Loran). E-Loran system uses the ASF estimation method and is able to provide the more precise location service. However there was rarely research on this area in Korea. Hence, we introduce the ASF and its estimation model. With the comparison of the same condition and data from the original Monteath model and ASF estimation data of Loran system respecti-vely, we guarantee that the implementation is absolutely perfect. For further works, we're going to apply the ASF estimation model to Korean DGPS beacon system with the Korean terrain data. |
| 키워드(Keyword) |
ASF
Propagation delay modeling
Location
DGPS
Loran
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| 파일첨부 |
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