Every subscription based L-band correction service provides improved levels of accuracy and ensures consistent global performance. NovAtel CORRECT with PPP utilizes correction data from TerraStar. The TerraStar network provides continuous coverage worldwide, with 80 GNSS reference stations located around the globe and 3 widely-distributed Network Control Centers to deliver data over seven independent satellite beams. With full redundancy built in, the TerraStar network offers the most reliable source of L-band corrections in the marketplace.
TerraStar supplies data directly to the NovAtel GNSS receiver and offers two levels of positioning accuracy: TerraStar-C which delivers 4 centimetre-level positioning with instant re-convergence after short GNSS outages and TerraStar-L with horizontal position accuracy of 40 cm.
Today TerraStar services are being used by NovAtel customers in a wide range of applications including precision agriculture, ground-based vehicle mapping, surveying, and unmanned air and land-based applications. These users are selecting TerraStar services primarily because the same solution can be applied across global fleets of equipment and because no additional equipment is required beyond the GNSS receiver and antenna they are already using from NovAtel. For example, precision agriculture users know that TerraStar corrections will help them optimize row spacing in order to reduce costs from materials like seed and fertilizer. Unmanned applications can rely on TerraStar corrections to maintain a precise position regardless of where the vehicle is operating. While RTK and SBAS networks are available in many regions, NovAtel customers can rely on TerraStar services to push the boundaries of where precise GNSS positioning is possible. As the benefits of the global TerraStar services become more widely understood, the variety of applications taking advantage of these services will continue to grow.
Choosing between the various augmentation and correction options, including commercial L-band services, depends on the accuracy, cost and location requirements of the application. Masterson said, “In today’s market, it’s all about flexibility to choose the right accuracy and performance for the application.”