GNSS and GPS receivers technology:•    Heading support: A GNSS receiver with heading support can determine the direction (or angle) an object is facing. This is often achieved by using two GNSS antennas to compare the signals and calculate the heading.•    Base support: A GNSS receiver with base support can act as a "base station." It stays in a fixed position and provides correction data to other GNSS receivers (rovers) in the area to improve their accuracy.•    Corrections enabled: A corrections-enabled GNSS receiver can receive correction data (like from a base station or a network) to improve its positioning accuracy, often achieving centimeter-level precision.•    GNSS/INS: This type of GNSS receiver is integrated with an Inertial Navigation System (INS). The INS uses sensors (like accelerometers and gyroscopes) to help maintain accurate positioning even when satellite signals are weak or temporarily unavailable.•    Rover & base support: A GNSS receiver with rover and base support can operate in both modes: as a rover (moving unit that uses corrections) or as a base station (providing corrections to other rovers).•    Rover support: A rover-support GNSS receiver is designed to be a mobile unit that receives correction data from a base station to achieve high-precision positioning.•    Timing support: A GNSS receiver with timing support is used primarily to provide very accurate time synchronization for applications like telecommunications or power grids, rather than focusing on position accuracy.