Abstract:Frequency modulation and amplitude compensation of interruptedly received LFM signals are studied to precede a false target group based on interrupted T/R jamming system. The distribution of a false target group can be controlled by frequency modulation with received signal based on group delay of matched filter for LFM waveform. Amplitude loss caused from frequency mismatch and interrupted receiving is compensated respectively, so that the false target group can suppress the true target on amplitude to make effective jamming against radar. Finally, numerical simulations verify the analysis.