page_title: Error analysis for the Global Positioning System
hierarchical_section_title: Error analysis for the Global Positioning System
caption_attribution_description: English: Artist's conception of GPS Block II-F satellite in Earth orbit. Français&#160;: Vue d'artiste d'un satellite GPS Block II-F sur orbite terrestre.
context_page_description: The analysis of errors computed using the Global Positioning System is important for understanding how GPS works, and for knowing what magnitude of errors should be expected. The Global Positioning System makes corrections for receiver clock errors and other effects but there are still residual errors which are not corrected. The Global Positioning System was created by the United States Department of Defense in the 1970s. It has come to be widely used for navigation both by the U.S. military and the general public.
  GPS receiver position is computed based on data received from the satellites. Errors depend on geometric dilution of precision and the sources listed in the table below.
context_section_description: The analysis of errors computed using the Global Positioning System is important for understanding how GPS works, and for knowing what magnitude of errors should be expected. The Global Positioning System makes corrections for receiver clock errors and other effects but there are still residual errors which are not corrected. The Global Positioning System (GPS) was created by the United States Department of Defense (DOD) in the 1970s. It has come to be widely used for navigation both by the U.S. military and the general public.
  GPS receiver position is computed based on data received from the satellites. Errors depend on geometric dilution of precision and the sources listed in the table below.
caption: Artist's conception of GPS Block II-F satellite in orbit
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