Anti DRFM Interference Design for Frequency Agile FM Fuze
The modern battlefield environment is becoming increasingly complex,and the digital radio frequency memory(DRFM)transmissive jamming technology posed a severe challenge to the battlefield survival capability of frequency-agile fuzes.Against the background that traditional frequency-agile fuzes were easily jammed by DRFM,the paper started from the aspect of demodulating wave shape periodicity of the fuze to carry out re-search on anti-DRFM jamming methods for frequency-agile fuzes.A general scheme for frequency-agile fuzes re-sistant to DRFM jamming was designed,which used m-state sequence encoding.A signal processing method for extracting harmonics by zero-padding FFT spectrum refinement and timing judgment was proposed.According to the overall design plan,the hardware circuit design and program development of the frequency-agile fuze sig-nal processing system were completed.The experimental results showed that the frequency-agile fuze anti-DRFM jamming method designed in the paper could significantly improve the anti-DRFM jamming performance while ensuring the precision of the fuze's interval.
FM fuzefrequency hopping parametersdigital RF storage interferencewaveform designfre-quency agility
万方数据
维普
