The radar mounting calibration concerns the error correction in the horizontal alignment of the mounting position in the customers` railway system.
For the calibration our customers use the SmaRT Radar Tool App for measuring the mounting angle of radar sensors DRS05/#
and for calculating the corresponding calibration factors , to be multiplied in the on-board unit with the DRS05/# output (speed and distance increments).
The SmaRT App uses the acceleration sensor in the smartphone to obtain its orientation
relative to the direction of gravity. Beyond this function of COTS inclinometers, the app
guides the user. It indicates the direction to the device connector for the intended orientation
of the next measurement. It asks the user for the train/cab number and lets them take a
photo to document the orientation of the radar relative to the train (for identification of the
mounting position in case of two radars per cab) and of the train relative to the track (in case
of non-negligible track inclination). That allows in a later verification step to detect sign and
assignment errors. The result page presents measurement from several trains or dates with
a flexible search function.