Measurement of Direction of Arrival for Radar Application

This paper presents theoretical and experimental results of a RF direct technique to determine the directions of arrival (DOA) of multiple radio frequency (RF) signals from an array of antennas with an array of six-port reflectometers (SPR). The DOAs will be used for tracking multiple targets in a duplex radar system at 2GHz. This simple and original receiver system, allows to determine the directions of arrival of differents signals, detected from different targets with only 4 samples.