Real-Time GNSS Ephemeris

Previously marketed as GPStream™ GRN, the real-time GNSS ephemeris service is the industry’s best and most compatible GNSS assistance data service. More than 40 mobile operators and device OEMs already rely on us to fuel their Assisted-GNSS location platforms.


Our reference network includes nearly 30 reference stations deployed across the world, and monitors  all GNSS satellites from the GPS, GLONASS, BeiDou and Galileo constellations. And because it is used extensively by carriers for E-911 service, our reference network has been designed with quadruple redundant views of each satellite and is delivered from carrier-grade, geo-redundant data centers.

Features & Benefits

Broad Industry Compatibility

We work closely with leading network infrastructure vendors and device OEMs to ensure full interoperability with their A-GNSS server platforms. The real-time GNSS ephemeris service comes in several out-of-the-box editions designed to support platforms such as Qualcomm QPoint, Ericsson, Nokia Solutions and Networks, TeleCommunications Systems, Polaris and others. We can easily adapt our solution to any existing 3rd party interface, or alternatively provide our own full featured and easy to integrate API. For legacy systems, assistance data is also available in industry standard RINEX file formats.


Backed by carrier-grade SLA

We designed our reference network with carrier grade resiliency to provide 99.999% SLA so it can be relied upon for emergency services such as E-911 and for every day and any type of Location-Based Services. Our reference sites, deployed in secure ISP facilities with redundant power and reliable connectivity, all tie into our geo-redundant data centers which are monitored 24×7 by our Operations team.


The real-time GNSS ephemeris service is not only the industry’s most compatible source of assistance data; it also forms the backbone for many of our other solutions. Since we monitor every satellite from every constellation, we also produce several other related products, including highly accurate long-term orbit and clock predictions, multi-GNSS maneouver notices, historical observation archives and real-time integrity notices. Feel free to contact us with any special needs you may have.