Abstract
With the improving development of the electronic and information technology and the complexity of the electromagnetic environment in the battlefield, the contest between the electronic jamming and the anti-interference is more and more fierce. The performance of anti-jamming of radar, which is kind of important sensor and data processer, has great meaning for its self-survival and battle performance. At the present stage, the imperious difficulty of anti-jamming of radar has been concentrated in the main lobe, as the anti-jamming in side-lobe has been beautifully restrained by sidelobe canceller and blanking. Combined with the typical scene of medium and short range air defense alerting, the method of anti-jamming in main-lobe is summarized in this paper from two sides: flexible anti-interference with single radar base and synergistic anti-interference with separated basis. The single one is introduced and analyzed from four dimensionality: time, frequency, space, polarization,then significance and the phase-coherent accumulation of the recombined-agility waveform across multi-dimension is emphasized. Besides, multi-based synergistic anti-interference is drawn forth from anti-blanket jamming and anti-deception jamming What’s more, combined with the thought of deep learning, cognition and distinguishing of interference is bring to anti-jamming system and the closed loop of anti-jamming processing is built.
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