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Speed Interference Suppression for PD Radar Based on Adaptive Dictionary

机译：Speed Interference Suppression for PD Radar Based on Adaptive Dictionary

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摘要

Random pulse initial phase (RPIP) signal isa kind of agility waveform which is commonly usedin pulse Doppler (PD) radar. Although RPIP has themerit of restraining velocity deception jamming effectively,its efficiency is restricted under the conditionof strong interference. To make the RPIP signal fullyplay the anti-jamming performance, this paper proposeda speed interference suppression method based onadaptive dictionar that separates the target echo fromthe strong jamming signal with good sparsity. First,the prior knowledge of strong interference signal isobtained by the technique of peak detection which iscombined with the dual channel processing. Second,the quasi-Karhunen-Loeve transform (Q-KLT) basis ofinterference signal is constructed based on the priorknowledge, and the approximate Q-KLT basis of targetsignal is constructed by the way of dictionary learning,and those signals can be obtained from the adaptive dictionaryby the algorithm of base tracking (BP). Finally,the effectiveness of the proposed method is verified bynumerical simulation, which proves that the method canensure a lower Doppler sidelobe in the strong interferencescene, which confirmed that it has a good antivelocitydeception performance.

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