LAUSR

A direction-finding technique based on time-modulated arrays (TMAs) is presented. Signals radiated/received by the TMAs with moving phase centre suffer from the Doppler effect and the shifted frequency is direction-dependent. This interesting property allows TMAs to be used for direction finding. A radar bearing system using the TMA is proposed. Performance of the new direction-finding technique is discussed and compared with conventional techniques. Numerical results show that this method is effective and provides reconfigurable angle-searching range and bearing accuracy. It is proved to be a flexible bearing method qualified for different detection requirements just by changing the time schemes of the TMAs.