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.
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.