Co-ordinate frame conventions
Measurements made by the INS are available in a number of different reference frames
for use in different applications.
IMU frame
The IMU reference frame used by the RT (shown in Figure 4), is popular with navigation
systems – where the positive X-axis points forwards, the positive Y-axis points right and
the positive Z-axis points down.
When making measurements required in the configuration files, measurements should be
made between the point of interest and the measurement origin shown in Figure 4. The
axes and measurement origin point are the same for all RT models.