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http://dx.doi.org/10.5139/JKSAS.2017.45.9.757

Virtual Satellite and Virtual Range Measurement Generation for the GNSS Position Accuracy Improvement  

Song, Choongwon (Konkuk University)
Ahn, Jongsun (KARI(Korea Aerospace Research Institute))
Choi, Moonseok (Konkuk University)
Jang, JinHyeok (Konkuk University)
Heo, MoonBeom (KARI(Korea Aerospace Research Institute))
Lee, Young Jae (Konkuk University)
Publication Information
Journal of the Korean Society for Aeronautical & Space Sciences / v.45, no.9, 2017 , pp. 757-765 More about this Journal
Abstract
GNSS (Global Navigation Satellite System) Position Accuracy depends on pseudo-range measurement and DOP (Dilution Of Precision) which indicates about navigation satellite geometry. Pseudo-Range has many error sources such as satellite clock, orbit, ionosphere, troposphere, multipath and so on. For the improvement of the accuracy, user can use corrected pseudo-range in DGPS (Differential Global Positioning System), which is one of the relative positioning methods. But, stationary station is needed in relative positioning. In case of DOP, Signal reception environment is important. If receiver sets in the center of city, it could be interrupted reception by buildings. This environment leads to decrease the number of visible satellites and to increase DOP. This paper proposes the concept of GNSS positioning with virtual satellites which have usable VRM (Virtual Range Measurement). Via virtual satellites and VRM, users could get an accurate position. Especially referred virtual satellites constellation has an effect on vertical error.
Keywords
GNSS; Pseudo-Range; DOP; Virtual Satellite; Virtual Range Measurement;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
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