Article: How GNSS Works

By Mike Ball / 28 Apr 2020

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OxTS xNAV200 GNSS-aided INS OxTS, a developer of inertial sensing solutions for UAVs (unmanned aerial vehicles) and robotics, has published an in-depth article explaining the principles of GNSS (Global Navigation Satellite Systems). GNSS is a term that encompasses all of the various satellite-based positioning systems, such as GPS.

Read the full article on OxTS’ website here

The article covers:

  • The main GNSS currently in use or under development around the world, including GPS, GLONASS, BeiDou and Galileo
  • How GNSS antennas and receivers work
  • The orbital segment of GPS, including the L1 and L2 carriers
  • Ground-based GPS control stations
  • How GPS receivers calculate position
  • The information encoded in a GPS signal
  • How GPS receivers track and work out the range to satellites
  • SPS measurement and differential corrections (DGPS)
  • Real-Time Kinematic (RTK) accuracy improvement

Global navigation satellite systems are an essential component of navigation and positioning technologies for UAVs, UGVs (unmanned ground vehicles), USVs (unmanned surface vehicles) and other robotic platforms. To find out more, read the full article on OxTS’ website.

Posted by Mike Ball Mike Ball is our resident technical editor here at Unmanned Systems Technology. Combining his passion for teaching, advanced engineering and all things unmanned, Mike keeps a watchful eye over everything related to the unmanned technical sector. With over 10 years’ experience in the unmanned field and a degree in engineering, Mike’s been heading up our technical team here for the last 8 years. Connect
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