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논문 기본 정보

자료유형
학술대회자료
저자정보
Kyoung-Dal Kim (부산대학교) Min-Cheol Lee (부산대학교)
저널정보
한국자동차공학회 한국자동차공학회 Symposium 한국자동차공학회 2008년 ITS부문 SYMPOSIUM
발행연도
2008.9
수록면
202 - 210 (9page)

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Recent studies on automobile navigation have involved ongoing research on precise location determination techniques. Such research has led to actualizing unmanned automobile navigation and identifying the absolute location of mobile bodies in military or outdoor environments. However, GPS(Global Positioning System) signals are intermixed with general SA(Selective Availability) signals when received, which results in a large error tolerance when pinpointing a position. The impact of the SA signals on the accuracy of GPS signals is greater than the error caused by the refraction at the ionosphere. The history of GPS started with military applications and before GPS was available to the public, GPS signals were transmitted intermixed with SA signals. GPS signals have an error range of tens of meters but DGPS(Differential Global Positioning System) signals, in which SA signal are removed, have a decreased error range of a few meters. Furthermore, in order to reduce the error in locating positions with GPS, the RTK (Real Time Kinematics) System, which requires fixed broadcasting stations, was introduced. RTK has an error range of only a few centimeters. However, RTKs are only applicable for use in a limited area due to the high cost and dependency on fixed broadcasting stations. To improve such drawbacks, the use of low-end DGPS, and the implementation of virtual kinematic features, is proposed to reduce error in locating an automobile’s position.

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Abstract
Ⅰ. Introduction
Ⅱ. DGPS receiver data analysis and process
Ⅲ. Position surveying and analysis of DGPS receiver
Ⅳ. Conclusion
Reference

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