3. June 2024 © Copyright 2024, PROCEQ SA 19
5.2 Cross polarized line scan (GP8800)
By aligning the receiver and the transmitter, which means rotating the antenna with a 90° angle,
the detection of deeper objects shadowed by upper shallow objects (especially longitudinal
targets such as ramping pipes or ducts) becomes easier as explained in Figure 16.
Figure 16: Cross polarization principle
The GP8800 is equipped with an antenna with the ability to be cross-polarized changing the
orientation (90° rotation as per Figure 17) and the encoder wheel mounting (see Figure 11).
The cross-polarized line scan may unveil the presence of deeper/hidden objects.
Figure 17: GP8800 Cross polarization setting