Road Sign Safety Identification through the Use of a Mobile Survey System

Techniques are described in the following paper to incorporate a GPS with an IMU sensor to produce more accurate positions and attitude dynamics for geo-reference images of roadways. An Extended Kalman Filter (EKF) provides the possibility to integrate values from the two sources whilst minimizing errors to provide an accurate trajectory of the vehicle. Preliminary tests have shown that the use of GPS aided INS approaches in the mobile mapping system can provide high bandwidths for the vehicles kinematics and facilitates the generation of three dimensional topographic position. The results demonstrate that low cost MEMS IMU/GPS is a feasible solution.