PRODUCTS COMPANY SALES SUPPORT NEWS » TERRASTAR® TERRASTAR® Septentrio has implemented TERRASTAR® global high accuracy DGNSS positioning service and GNSS Precise Point Positioning service in its GNSS receivers, providing our customers access to decimeter accuracy even in the most remote areas, without the need for ground infrastructure. About TERRASTAR® TERRASTAR® operates, maintains and controls its own network of GNSS reference stations and the associated infrastructure to ensure maximum operational reliability of its augmentation services for land precise positioning. This gives TERRASTAR® full control and the ability to respond rapidly to customer requirements and advances in technology. The services are widely applicable by professionals in key areas of the land positioning industry. Including: Agriculture Survey, Construction, GIS, Mapping and Mining Airborne Near shore Dredging Land Oil and Gas Exploration, Production TERRASTAR-D® The TERRASTAR-D® service is a precise positioning service designed to deliver decimeter-level position accuracy, globally. The service is based on Precise Point Positioning (PPP) - a technique where all GNSS system errors are removed or minimized by direct calculation, precise modeling or estimation. PPP consists of a single set of corrections to the satellite orbits and clocks, allowing position accuracy to be maintained regardless of user location. Measurement precision is achieved by using both L1 and L2 carrier phase observations, along with C/A and P-Code measurements. The use of dual-frequency GNSS hardware at the user end allows the calculation and removal of local ionosphere errors, while troposphere delays are estimated within the calculation. Other sources of error, including ocean loading, earth tides and phase windup are also modeled. TERRASTAR-D® is a GPS and GLONASS service that provides a truly global, seamless, high-accuracy position, which is robust and effective in all locations on the globe. TERRASTAR-M® The TERRASTAR-M® service is a GNSS augmentation service designed for users who need reliable, accurate position with a high level of integrity. Based on L1 carrier and C/A code observations, TERRASTAR-M® provides meter-level position accuracy by calculating pseudo-range corrections using a single difference technique for both GPS and GLONASS satellites. Correction data is delivered seamlessly by high power satellite broadcasts, worldwide. careers contact us login register terms & conditions About GNSS design: shakkei.com Headquarters: Septentrio nv, Greenhill Campus, Interleuvenlaan 15G, 3001 Leuven, Belgium | Phone +32 (0)16 300 800 | Fax +32 (0)16 221 640 US Office: 20725 Western Avenue, Suite #144, Torrance, CA 90501 | Phone: +1 (888) 655-9998 | Fax: +1 (310) 541-8257