1. Electronic Engineering Institute, Hefei, Anhui 230037, China;
2. The 38th Institution of China Electronics Technology Group Corporation, Hefei, Anhui 230037, China
The conventional jamming approaches with dimensional singularity fail to gain jamming efficiency against space-time adaptive processor (STAP) in spatial-temporal domain.Therefore,a scattered-wave long duration sweeping frequency jamming method is proposed.In this method the scattered wave signal,which is generated by utilizing sweeping frequency signal scattering with Doppler bandwidth to certain locations from jammers,is employed to counter STAP radar.With this method,the jamming signal acquires space-time coupling feature and is continuous in space domain so that it cannot be identified or suppressed by STAP radar.The proposed method makes different Doppler frequencies between pulses hinder the radar from extracting signal Doppler frequency to occupy degree of freedom in processors.The simulation shows that the power spectrum of jamming signals can cover the whole spatial-temporal domain,leading to serious losses in the degree of freedom and improvement factor of STAP.The simulation result indicates the availability of the approach.
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2017, Vol. 45 
