Overview of Anti-chaff Interference of Radio Fuze

Chaff formed by airborne chaff projectiles is a common interference faced by radio fuze of air-to-air missiles and air defense missiles, which seriously affects the effectiveness of missile guidance systems. Anti-chaff interference is an urgent problem for radio fuze. The study of anti-chaff interference of radio fuze can greatly enhance the operational performance of radio fuze. This paper firstly briefly describes the development status of chaff jamming, and then summarizes the research status of anti-chaff jamming methods for radio fuze. Then this paper introduces the anti-chaff jamming methods based on spectral spreading, polarization characteristics, Doppler difference, echo signal characteristics, machine learning and so on. Finally, it summarizes the problems faced by the anti-chaff jamming technology of radio fuze, and gives an outlook on its development prospect.