Veripos Offshore PPP Services Improve Accuracy

March 11, 2015  - By
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Veripos, a supplier of high-precision GNSS positioning facilities to offshore and associated industries, has upgraded its Apex and Apex² precise point positioning (PPP) services.

The services now typically provide users with a horizontal position accuracy of better than 5 cm and 12 cm in the vertical at the two sigma (95 percent) confidence level.

The enhanced levels of performance, now available to all current users of Apex and Apex² without any need to upgrade, have been calculated from static data obtained in Aberdeen, Scotland, where Veripos is headquartered, as well as Houston, Texas, and Singapore. Veripos said that accuracies may vary with observing conditions, however.

The improved accuracy follows a major upgrade of the entire Veripos global reference station network for tracking all GNSS signals, together with introduction of new receivers and geodetic antennas for delivery of better measurement quality resulting from refinements to algorithms and software used to derive necessary GNSS orbit and clock corrections.

Designed to meet all offshore positioning and navigation applications, the dual-beam Apex and Apex² PPP services are relayed via seven geostationary communications satellites to ensure continuous availability and service redundancy while providing access to both GPS and GLONASS constellations. Positional accuracy is maintained regardless of user location, Veripos said.

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