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http://dx.doi.org/10.6109/jicce.2011.9.4.363

Propagation Analysis of DGPS Antenna for Radial Ground and Obstacle  

Kim, Young-Wan (Department of Radio Communication Engineering, Kunsan National University)
Publication Information
Journal of information and communication convergence engineering / v.9, no.4, 2011 , pp. 363-368 More about this Journal
Abstract
The DGPS transmits the enhancement signal to GPS using the medium frequency band. The NDGPS service that covers the Korean peninsula has been started since 2009. The service area of ocean-based DGPS(maritime-DGPS) reference stations covers the 100NM, but land-based DGPS(land-DGPS) covers 80km service area less than that of maritime DGPS. The DGPS's antenna has the top-loaded monopole antenna type. Top-loaded monopoles are the logical antennas to be used in order to get a low profile antenna and a performance according to the broadcaster and communication needs. The antenna needs to get the ground plane with good conductivity characteristics and flat ground plane without obstacle near to the transmitting antenna. In this paper, the radiation characteristics of an equivalent MF antenna are analyzed in view points of the ground conductivity and the ground plane with obstacle near to the antenna.
Keywords
DGPS; Top-loaded antenna; DGPS's antenna; Radial ground.;
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