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OmniSTAR's "VBS" sub-meter service generates corrections in each user's GPS receiver that are optimized for the user's location. OmniSTAR-capable L1 GPS receivers output both high quality RTCM-104 corrections for external use, and differentially corrected Lat/Long/Height in NMEA format. The Graphic shows how the system operates.
- GPS
satellites
- Multiple OmniSTAR GPS Reference Sites
- Send
GPS corrections via lease line to
- Houston
Network Control Center where data corrections are checked and repackaged
for uplink to
- L-
Band Geostationary Satellite
- Typical Geostationary L-Band satellite footprint.
- Correction
data are received and applied real-time
The OmniSTAR HP and XP services operate is a similar manner, but require OmniSTAR-capable dual-frequency GPS receivers. By using L1/L2 atmospheric corrections and carrier phase techniques these service achieve even higher levels of accuracy.
Technical
Description
Service
Regions & Coverage Maps |
