GPS Geodetic Reference System WGS 84
GPS Geodetic Reference System WGS 84
GPS Geodetic Reference System WGS 84
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<strong>GPS</strong> <strong>Reference</strong> Frame<br />
• World <strong>Geodetic</strong> <strong>System</strong> 19<strong>84</strong> (<strong>WGS</strong> <strong>84</strong>)<br />
― <strong>Reference</strong> for Positioning and Navigation<br />
― Aligned to International Terrestrial <strong>Reference</strong> Frame (ITRF)<br />
― Consistent with international standards<br />
― Supports <strong>GPS</strong> Operational Control Segment (OCS)<br />
Stations<br />
NGA<br />
<strong>GPS</strong><br />
OCS<br />
Orbit<br />
Process<br />
International<br />
GNSS Service<br />
<strong>GPS</strong><br />
Users<br />
• <strong>GPS</strong> <strong>Reference</strong>s <strong>WGS</strong> <strong>84</strong><br />
– Interoperability requires relationship between <strong>WGS</strong> <strong>84</strong> and other<br />
GNSS reference systems<br />
Approved for Public Release 09-478<br />
2
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