Differential Correction Sources: SBAS, RTK Base Stations, and Real-time GNSS Networks

We get a lot of questions about how to improve in-the-field accuracy with GNSS equipment.  Many new or less-experienced users suspect that when a device is marketed to provide 10 cm or 1 cm level accuracy, that it provides that right out of the box.  When you pay a pretty penny for a high-end machine […]

Satellites Galore! What We Launch Into Space and GPS Modernization

Today there are hundreds of satellites orbiting Earth.  A portion of those are Global Navigation Satellite Systems (GNSS) like GPS (USA), GLONASS (Russia), Galileo (European Union), and COMPASS or BeiDou (China).  But there are many other reasons governments and commercial interests want to put birds in the sky: imagery capture, communications, television broadcasting, weather monitoring, intelligence […]

Galileo Officially Launched

The European Space agency has begun launching fully operational satellites for their Galileo GNSS. After nearly a decade of experimentation and testing the European Space Agency (ESA) will launch two fully operational Galileo system satellites. The launch date was originally set for 8/21/14 but was delayed 24 hours due to weather conditions at the launch […]

GLONASS Gone and Back Again

On April 1st GPS users experienced an unprecedented event; the full operational loss of the Russian GNSS constellation commonly referred to as GLONASS.   As detailed in the GPS World article “GLONASS Gone . . . Then Back” the GLONASS system experienced a total disruption. Elecdata received many calls from users around the country stating […]