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The NASA Global Differential GPS System (GDGPS) and The ...

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Terrestrial <strong>and</strong><br />

airborne users<br />

Fully operational since<br />

2000<br />

For more information<br />

see:<br />

http://www.gdgps.net/<br />

<strong>NASA</strong>’s <strong>Global</strong> <strong>Differential</strong> <strong>GPS</strong> <strong>System</strong><br />

L<strong>and</strong> lines<br />

Iridium<br />

Inmarsat<br />

GD<strong>GPS</strong> Operations Center<br />

Frame<br />

Internet<br />

GD<strong>GPS</strong> real time network<br />

<strong>NASA</strong>’s <strong>Global</strong> <strong>Differential</strong> <strong>GPS</strong> <strong>System</strong><br />

Uplink<br />

TDRS<br />

Broadcast<br />

<strong>NASA</strong><br />

Space users<br />

Y. Bar-Sever - 2

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