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Fundamentals Of Surveying2D

Global Positioning System (GPS) - Theory & Concepts - G P S D O P

Principles, segments, methods, coordinate systems, and error sources in GPS surveying.

Open the complete lesson

GPS Satellite Geometry (DOP) Simulator

Observe how satellite distribution affects Positional Dilution of Precision (PDOP).

ClusteredWidely Spaced

Geometry Quality

Estimated PDOP:1.4
Rating:Excellent

A larger highlighted area in the skyplot indicates better satellite geometry, resulting in a lower (better) PDOP value. Clustered satellites yield high uncertainty in position.

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