Global Positioning System
Boeing’s Global Positioning System IIF enables customers to know and track where they are anywhere on the globe via a satellite link.
Precision location, timing
The Global Positioning System IIF is a current iteration of the GPS satellite, which Boeing began building in 1978. The company has constructed more than 40 GPS satellites that cumulatively have provided more than 540 years of on-orbit service. GPS satellites orbit some 12,000 miles above the Earth and comprise a worldwide timing and navigation system.
GPS Snapshot
Global Positioning System IIF: Flexible Capabilities
Atomic Clock
GPS satellites use atomic clocks to continuously transmit digital radio signals pertaining to the satellites’ exact time and location.
Military Grade
The GPS IIF has a robust military signal “M-code” and variable power for better resistance to jamming in hostile environments.
Flexible Capabilities
GPS IIF has a flexible design, which Boeing can upgrade for net-centric operations and advanced security.
Low-cost, sustainable
Boeing uses a commercial, off-the-shelf approach to integrate low-cost and proven capabilities into the GPS IIF design.
Milestones
Global Positioning System Technical Specifications
| Position Accuracy Requirement | 3-meter (on orbit performance exceeding next generation specification) |
| Mass at Launch | 3,600 lbs (1,633 kg) |
| Power | 1952 W, end of life |
| Solar Cells | High efficiency Gallium Arsenide |
| Dimensions | 99 in by 81 in by 71 in (251 cm by 206 cm by 180 cm) |
| New L5 Signal | 1176.45 MHz |
| Autonomous Operations | Up to 60 days |
Feature Stories
4th Boeing GPS IIF Space Vehicle Arrives at Florida Launch Site
February 28, 2013 in Space
GPS satellites circle Earth at a distance of 11,000 nautical miles. But one of the most important steps they take can be measured in single numbers.
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Building A Better GPS
January 10, 2013 in Space
Bringing innovations from Boeing’s airplane assembly lines to GPS satellite production, Boeing is helping to make GPS service available wherever whenever you need it.
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GPS IIF Quick Facts
- An on-orbit, reprogrammable processor receives software uploads for improved system operation.
- Innovative pulse-line manufacturing approach delivered IIF fleet of 12 to meet constellation sustainment schedule.
- Twelve-year design life provides long-term service and reduced operating costs.
- New L5 signal for safety-of-life transportation applications.
- GPS IIF satellites have increased signal power for civil applications.