Type:

Other

Description:

The Earth is not a perfect sphere, but is instead more like a slightly squashed sphere called an ellipsoid. Because of this, GPS receivers must use a correction model (called a geoid) to calculate true elevation above sea level. UNAVCO has prepared this explanation for both teachers and students to learn more about accuracy, scientific models, and how GPS receivers work.

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    Education Levels:

      Keywords:

      NSDL_SetSpec_380601,Geospatial,oai:nsdl.org:2200/20120302191334386T,Geodesy,Geoscience,NSDL

      Language:

      English

      Access Privileges:

      Public - Available to anyone

      License Deed:

      Creative Commons Attribution Non-Commercial Share Alike

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