Abstract: Radar jamming system is an important combat equipment under complex electromagnetic environment.According to the difference of radar signal,jamming signal generation unit can generate the interference signal.The structure of jamming signal generation unit is expounded,and the design of frequency synthesis、variety frequency and DRFM synthesis has been realized.The key technology——the composite of direct digital frequency and aim frenqucy noise engendering unit have also been solved. The testing outcome shows that the jamming signal generation unit can satisfy the target demands of the system.

Key words: Signal, Generator, Frequency synthesizer, Frequency converter, DRFM synthesis