A jamming technique against sar based on inter-pulse subsection randomly-shift-frequency and its application1

In order to ensure the safety of intelligence in important place, a jamming method against SAR based on inter-pulse subsection randomly-shift-frequency technique is brought forward. This technique can produce several noise-like jamming swathes in range direction, whose number is determined by the number of inter-pulse subsection. And, the position and width of the swathe are determined by frequency shifted. It can be concluded from the experiments that the number of subsections can´t exceed 5; the centre of the shift-frequency can´t exceed B_r / 2 and the scope of the shift-frequency can´t exceed B_r / 4. In allusion to the phenomena of focusing on jamming technique but application, the application model of this technique brought forward in this paper is established, which followed the implement steps and method of this technique. The availability and advantage of this method is proved in the simulation experiments.