Target persistence filter for multi-frequency automotive radar system

摘要: A Doppler control circuit for a CW or pulse radar system monitoring not only the phase shift between echo signals from several targets but also amplitude difference and to further tune particular target among one more which return. The can be used in state of art type systems. In system, continuously generated signal is repeatedly transmitted at different frequencies time division fashion define succession transmit receive frames. frames are divided into plurality interval windows with selected being detect received frequencies. remaining subsystems system. rate reference frequency determine closing (positive negative), while two range direction. persistence environment filter prevents giving false alarms due short duration echoes resulting birds wayside objects.