Study On Adaptability Of Typical Electromagnetic Environment Of Doppler Fuze

Electronic warfare is a major way to seize the initiative in the war of information. With the development of radio fuse, its position in the modern war is becoming increasingly important. With its unique advantages and characteristics Doppler system has been a hot research topic. As the the electromagnetic interference environment of fuze ia getting increasingly sophisticated, how to improve the anti-jamming performance of the fuse will become the emphasis of future research work.In this paper, three most typical Doppler systems were analyzed:continuous wave Doppler fuse, linear frequency modulation Doppler fuse and pulse Doppler fuse. Firstly, the author has theoretically analyzed its working principle and a complete simulation model was established based on simulation platform. Secondly, different interference types were simply categorized into repressive jamming and deceptive jamming. Observation was then made with regard to the anti-jamming performance of three systems. A simulation system will be established based upon the above analysis. Lastly, using the NI company’s RF Signal Processor, the simulation platform was built and various experiments were conducted in fuse jamming microwave anechoic chamber. A large number of experimental verification and data analysis were carried out for both continuous wave and linear FM Doppler system to test its jamming capability.A combination of theoretical analysis, simulation results and specific experiments were conducted. For the continuous wave Doppler fuse, it can be interfered by Sinusoidal AM and sweeping AM interference; for the FM Doppler fuse, sweeping AM interference can significantly influence the fuse. For the pulse Doppler fuse, periodic waveform AM interference could easily affect it. To irregular waveform interference, by increasing the power of the signal, the three kinds of fuse can be easily suppressed.