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Global Differential GPS System
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Automatic Precise Positioning Service

The table below summarizes the expected positioning accuracy of this service (cm, 3D RMS) for a data files spanning 24 hours with at 1 Hz.

User type Latency
Near Real Time
(1 minute - 24 hours)
> 1 day
Stationary (dual frequency)
< 5 cm
~1 cm
Mobile (dual frequency)
< 15 cm
< 5 cm
Airborne (dual frequency)
< 20 cm
< 10 cm
 
Stationary (single frequency*)
~20 cm
~10 cm
Mobile (single frequency*)
~50 cm
~25 cm
Airborne (single frequency*)
~50 cm
~25 cm
*Note, the ionosphere is a major error source in positioning single frequency users. In the low latitude, and during ionospheric storms the positioning error may be worse than the typical case depicted here.

Real-time GNSS
Products & Services
Precise, Global, Reliable
- Embedded Autonomous Ephemeris Prediction (AEP) software
- Orbit & Clock Corrections
- Orbit & Clock States
- Broadcast Ephemeris & Almanac
- Complete 50 bps Navigation Message
- Global Ionospheric (TEC) Maps
- Raw Measurements
- Predicted Orbit & Clock States
- Integrity & Performance Monitoring
- Global Virtual Reference Network
- Assisted GPS Data
- Assisted GLONASS Data
- GLONASS corrections, orbit and clocks

- Automatic Precise Positioning Service
- GREAT ALERT
- Consulting
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