Satellite distribution. Precision positioning using GNSS technology depends on the accuracy of pseudo-range measurements the one hand and the geometric configuration of the available satellites on the other hand. Integer value is called DOP (Dilution of Precision, accuracy variance). There are used a few sub-DOP parameters: • GDOP: Geometric DOP (position in space, including time-shift); • PDOP: Spatial DOP (position in space); • HDOP: Horizontal DOP (position in the horizontal component);
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Sources: Draft Kpis, Test Specification and Methodology, Draft Kpis, Test Specification and Methodology