Abstract
In this paper, an advanced joint jammer with deceptive jamming and blanket jamming is proposed for countering linear frequency modulated (LFM) radar. Multiple preceded and hysteretic false targets are produced by convolution operation and the blanket jamming is obtained by modulating the intercepted hostile radar signal according to pseudo-random sequences. The jamming algorithm is implemented on the platform of digital radio frequency memory (DRFM) which mainly consists of a high-performance FPGA of Virtex-6 series, a high speed ADC and a wideband DAC. The design of DRFM platform is presented in detail. Comparing to conventional jammer, our proposed jammer design is capable of obtaining deceptive and blanket jamming effects. Theoretical analyses and engineering implementation have verified the validity and effectiveness of the proposed jamming idea.
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