Analysis on GPS PDOP Peaks in Signal-Blockage Simulations
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초록
We determined Global Positioning System (GPS) satellite visibilities in signal-blockage simulations and then analyzed Position Dilution of Precision (PDOP) fluctuations obtained from those simulated satellite geometries. PDOP values under harsh signal-blockage simulation conditions become very high compared to those calculated with real observations. Especially when the number of observed satellites is four, which is the minimum requirement for GPS positioning, PDOP values instantaneously reached several hundreds or even several tens of thousands. It was also found that the volume of the tetrahedron composed with four satellites decreases significantly. When the correlation of the tetrahedron volume and PDOP was analyzed, we reached the following conclusions: PDOP values less than 4 can be acquired when the volume is larger than 103.2 × 1019 m3, and PDOP values increase beyond 50 when the volume is less than 6.0 × 1019 m3.
Abstract
We determined Global Positioning System (GPS) satellite visibilities in signal-blockage simulations and then analyzed Position Dilution of Precision (PDOP) fluctuations obtained from those simulated satellite geometries. PDOP values under harsh signal-blockage simulation conditions become very high compared to those calculated with real observations. Especially when the number of observed satellites is four, which is the minimum requirement for GPS positioning, PDOP values instantaneously reached several hundreds or even several tens of thousands. It was also found that the volume of the tetrahedron composed with four satellites decreases significantly. When the correlation of the tetrahedron volume and PDOP was analyzed, we reached the following conclusions: PDOP values less than 4 can be acquired when the volume is larger than 103.2 × 1019 m3, and PDOP values increase beyond 50 when the volume is less than 6.0 × 1019 m3.
참고문헌 (7)
- Dutt, V. B. S. S. I., "Investigation of GDOP for Precise user Position Computation with all Satellites in view and Optimum four Satellite Configurations", J. Ind. Geophys. Union, 13, pp.139~148 (2009)
- Hofmann-Wellenhof, B., "GNSS - Global Navigation Satellite Systems: GPS, GLONASS, Galileo & more" (2008), Springer Wien
- Kim, H.-I., "Development of Integrated Global Navigation Satellite System Simulator for Evaluation of Positioning Availability and Accuracy Improvement", MS, pp.2009
- Byeong-Mun Gwon, "Satellite Visibility Analysis According to Gps Antennas for Satellite Launcher", Journal of the Korean Society for Aeronautical & Space Sciences, 31(9), pp.129~136 (2003), The Korean Society for Aeronautical & Space Sciences[DOI]
- 이호석, "신호차폐 시뮬레이션 환경에서의 통합 GPS", GLONASS 이중차분 상대측위 정확도 분석, 2012, pp.36(6), 429~435[DOI]
- R. Santerre, "Geometry of GPS dilution of precision: revisited", GPS Solutions, 21(4), pp.1747~1763 (2017), Springer Science and Business Media LLC[DOI]
- Tahsin, M., "Analysis of DOP and its preciseness in GNSS position estimation", 2015 International conference on electrical engineering and information communication technology (ICEEICT), pp.1~6 (2015)