Research on Anti-interference Radio Frequency Coding Method Based on Millimeter Wave Radar

With the large-scale use of vehicle-mounted millimeter-wave radars, the problem of mutual interference between radars has been unavoidable. According to the working characteristics of vehicle-mounted millimeter wave radar, this paper proposes a radio frequency encoding method to solve the problem of mutual interference between radars. The encoding method is based on the two-phase modulation function of the millimeter wave radio frequency chip. When transmitting the radar signal, the phase of each signal cycle is encoded, and the signal is decoded according to the set encoding rules during reception to achieve the purpose of suppressing interference.