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http://dx.doi.org/10.5139/JKSAS.2007.35.12.1095

Analysis of 3D GIS- Based GNSS Visibility at Urban Area  

Yoo, Kyung-Ho (건국대학교 항공우주공학과)
Kang, Tae-Sam (건국대학교 항공우주공학과)
Sung, Sang-Kyung (건국대학교 항공우주공학과)
Lee, Eun-Sung (한국항공우주연구원)
Jeong, Seong-Kyun (한국전자통신연구원)
Sin, Cheon-Sig (한국전자통신연구원)
Lee, Sang-Uk (한국전자통신연구원)
Lee, Young-Jae (건국대학교 항공우주공학과)
Publication Information
Journal of the Korean Society for Aeronautical & Space Sciences / v.35, no.12, 2007 , pp. 1095-1100 More about this Journal
Abstract
Visibility of the satellite navigation is related to a environmental condition of a receiver. Obstacles like buildings and trees in urban areas can block signals and have effects on accuracy and reliability of positioning. This paper presents a method of creating 3D analysis model of urban canyon of Seoul using three-Dimensional digital map. Analysis techniques of visible satellites with Ray-Polygon Collision Detection and validation of algorithm through field tests are discussed. We have compared and analyzed the visibility of GPS and Galileo with respect to separate and simultaneous tracking in view of DOP (Dilution of Precision) using the 3D GIS digital map.
Keywords
Galileo; Collision Detection; DOP Simulation; 3D Digital Map;
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  • Reference
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