iGPS : Integrated Nav & Com Augmentation of GPS
iGPS : Integrated Nav & Com Augmentation of GPS
iGPS : Integrated Nav & Com Augmentation of GPS
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Copyright © 2010 Boeing. All rights reserved.<br />
BOEING PROPRIETARY<br />
Boeing’s Innovations on Iridium:<br />
A “Transit-like” <strong>Nav</strong>igation <strong>Augmentation</strong> <strong>of</strong> <strong>GPS</strong><br />
Physical Attributes <strong>of</strong> Enhanced <strong>Nav</strong>igation<br />
Strategic Innovation AN&SS / AN&TS BDS | Phantom Works<br />
• Enhanced Electronic Signals<br />
• Loud Precision Time Xfer, FDOA <strong>Nav</strong> & WB TDOA<br />
• Spatial Diversity <strong>of</strong> Satellites<br />
• 1-3 satellites in view<br />
• LEO High Doppler/Rapid Geometry Change<br />
• Built-in <strong>Com</strong>ms & Datalink Global Backbone<br />
• Higher power, similar frequency relative to <strong>GPS</strong><br />
Iridium Background<br />
• Primary Purpose: Global, Micro-Aperture<br />
<strong>Com</strong>munication<br />
• User Base: Military, Civil, and <strong>Com</strong>mercial<br />
• Over 300,000 subscribers as <strong>of</strong> 2008<br />
• Constellation Size: 66 Satellites<br />
• Altitude: Low Earth Orbit (LEO)<br />
• Boeing is Engineering and Operations Subcontractor to<br />
Iridium<br />
• “Iridium NEXT” repopulation contracting underway<br />
BOEING PROPRIETARY<br />
<strong>i<strong>GPS</strong></strong> Iridium<br />
Enhancements<br />
Time Transfer<br />
FDOA <strong>Nav</strong><br />
TDOA <strong>i<strong>GPS</strong></strong><br />
6<br />
Creating the First Global <strong>Integrated</strong> <strong>Nav</strong>-<strong>Com</strong> System<br />
6
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