The Apogee-D from SBG Systems is an all-in-one IMU/GNSS that embeds an RTK- and PPP-ready GNSS receiver for applications where space is critical but high performance required. MEMS based, it comes with one or two antennas.
The unit is fitted with very-low-noise gyroscopes, has high resistance to vibrations and has an internal Extended Kalman Filter that fuses inertial and GNSS data in real time for enhanced position and orientation measurements in harsh environments (bridges, tunnels, forests etc).
With features that include 0.008° roll and pitch over 360°, 0.015° heading when connected to GPS/GNSS, and 5 cm heave and 2 cm delayed heave, it is suitable for applications such as mobile mapping, hydrography and aerial surveying.