Direction Finding for BPSK with In-band Interference Based on Amplitude Comparison Method

In this paper, a novel amplitude comparison method for direction finding (DF) aiming to Binary Phase Shift Keying (BPSK) with cyclostationarity analysis is proposed to overcome the in-band interference problem in this paper. By using the cyclostationary characteristic, the ratio information of amplitude can be accurately extracted without being interfered by the aliasing spectrum and the direction of desired signal can also be effectively estimated. The experimental systems, with antennas working at 2.44GHz and 5.8GHz respectively, are constructed to verify the feasibility of the proposed method.