This paper describes several experiments related
to centimeter accurate positioning using the build-in GNSS
receiver and inertial measurement unit (IMU) of a dual-frequency
commercial smartphone. Using a choke-ring antenna platform to
shield the smartphone from the ground multipath we were able
to obtain a GNSS carrier phase (GPS+Galileo L1/L5) solution
with good fixed ambiguities and approx. 2 centimeter precision.
Furthermore, the GNSS antenna phase center (APC) within
the smartphone was determined. An Allan variance analysis
of the inertial measurement unit shows an unexpected good
gyro bias instability of approx. 15 deg/h. An integrated realtime
kinematic (RTK) GNSS+IMU solution was computed and
a heuristic sensitivity analysis was performed «
This paper describes several experiments related
to centimeter accurate positioning using the build-in GNSS
receiver and inertial measurement unit (IMU) of a dual-frequency
commercial smartphone. Using a choke-ring antenna platform to
shield the smartphone from the ground multipath we were able
to obtain a GNSS carrier phase (GPS+Galileo L1/L5) solution
with good fixed ambiguities and approx. 2 centimeter precision.
Furthermore, the GNSS antenna phase center (APC) within
the smar... »