Precise Orbit Determination of Global Navigation Satellite System of ...

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Chapter 9 Software and Simulation Results are always tracked at the ground tracking stations. Under this situation it can show the highest accuracy of dynamic orbit determination which can be achieved using Kalman filter. As a comparison, the results of the accuracy of dynamic orbit determination with the satellite visibility controlling (elevation mask=5°, 10° and 15°) are presented in the following figures. Figure 9-10 The Accuracy of Orbit Determination with Elevation Mask 5° Figure 9-11 The Accuracy of Orbit Determination with Elevation Mask 10° 118
Chapter 9 Software and Simulation Results Figure 9-12 The Accuracy of Orbit Determination with Elevation Mask 15° The accuracies of x, y, z coordinates of the dynamic orbit determination with the satellite visibility control (elevation mask=5°) are ±0.59, ±0.63, ±0.66 meters respectively. For elevation mask=10°, the accuracies of dynamic orbit determination are ±1.41, ±1.10, ±1.35 meters respectively. For elevation mask 15°, the accuracies of dynamic orbit determination are ±0.92, ±1.19, ±1.32 meters respectively (see Figure 9-10, Figure 9-11 and Figure 9-12). Obviously, due to the satellite visibility, the number of the tracking stations which take the measurements of the satellite is decreased during some arcs of the satellite and the accuracy of the orbit determination is reduced. The related PDOP of the orbit determination using these 8 ground tracking stations is shown in Figure 9-13. Figure 9-13 PDOP of the Orbit Determination with 8 Tracking Station Distribution (Elevation Mask 10°) The results of orbit determination of an IGSO satellite located at λ=60°, -10° are drawn in Figure 9-14 to Figure 9-17 (elevation mask 10°). 119
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PRECISE ORBIT DETERMINATION OF GLOB
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Summary GNSS-2 (Global Navigation S
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3.2.2.1 Principle..................
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9.3.3 The Effect of Distribution of
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Chapter 1 Introduction 1.2 Developm
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Chapter 2 Observations of Orbit Det
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Chapter 3 Orbit Tracking System and
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Chapter 4 Major Error Sources of Sa
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Chapter 5 Perturbation Models of IG
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Chapter 6 Algorithms of Orbit Deter
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Page 154 and 155: References Carpino M. (1995): SAEG
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Page 158 and 159: References Traquilla, J. M. and J.
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