Study on laser-encoding scheme to antagonize active jamming abstract

To solve the laser active interfering problem in high repetition frequency, answering-deception and the laser synchronization retransmission, this paper proposes a laser-encoding scheme based on the analysis of counteractive jamming mechanism. This scheme overlays the random signal into the finite random encoding basis to enhance the concealment of laser detecting signal, to increase the decipher difficulty, and then to improve the anti-answering-deception-jamming ability of the system. In addition, a randomly changed phase is adopted to make the features of detecting signal waveform clearly different from the high repetition frequency jamming, and therefore to decrease the possibility the detecting signal confused by the high repetition frequency jamming. Moreover, a real-time gate and the first sequence matching recognition method are utilized in this scheme to eliminate the influence of the repeater jammer. As a result, a new laser-encoding method is proposed aiming at the antijamming of laser guidance ammunition, which is proved effectively in resistance high repetition frequency jamming, answering-deception, and synchronization retransmission jamming.