Direction Finding of BPSK Signals Using Time-Modulated Array

A direction-finding algorithm by the time-modulated array (TMA) is proposed for binary phase shift keying (BPSK) signals. In the proposed scheme, only two antenna elements and a single RF channel are required, and the switch period has no relation with the symbol period of the BPSK signal. Numeric simulations are provided to examine the performance of the proposed scheme, and a two-element TMA test platform is constructed to verify its effectiveness.