Multipath Radio Propagation in a UAV Test Range

Multipath takes place when a radio wave propagates and reaches to the receiver from many directions. It is a result of bouncing of electromagnetic radiation caused by the environments of the intended path of propagation and is unavoidable in a practical scenario. The impact of multipath propagation may lead to certain degree of undesirable signal distortion in the wireless data communication to a UAV. The paper discusses various constituents and parameters in a test range that influence the operation of several radio data links in different frequencies.