Research On Key Technologies Of Jamming For Weapon Guidance Data Link

Weapon guidance data link is the lifeline of guided weapons and the multiplier to improve the integrated operational effectiveness of guided weapons.Due to the narrow beam,burst and directional characteristics of the weapon guidance data link,it poses a severe test for the counterparty to carry out reconnaissance and jamming.This paper proposes some new jamming methods based on the characteristics of weapon guidance data link and new theoretical technology.The main research contents are as follows:(1)This paper analyzes the key problems of jamming in the typical red-blue scenario,including target vulnerability,jamming strategy,jamming time,jamming deployment,etc.Finally,the visualization model of weapon guidance data link jamming is constructed based on STK.(2)Aiming at the problem that the weapon guidance data link directional narrow beam and the platform high-speed maneuver can not be interfered with,the airspace blockade jamming of the weapon guidance data link based on tracking alignment is studied.AGIMM algorithm based on fuzzy logic and maneuvering detection is proposed to calibrate jamming beam.Compared with the adaptive mesh interacting multiple model algorithm and the interacting multiple model algorithm,the FLMD-AGIMM algorithm reduces the position tracking error by at least 7.1% and 16.2% under different conditions.When the motion attitude of the target is stable,the algorithm can accurately predict the trajectory of the target within 80 s in the future and ensure the real-time alignment of the jamming beam.(3)From the perspective of studying the pulse jamming of channel coding and the difficulty in choosing the pulse jamming parameters,an efficient pulse jamming decision algorithm based on reinforcement learning is proposed.This algorithm only needs to try1/24 of the jamming strategy space to learn the optimal jamming action,and the effectiveness of jamming is taken into account.In the trial-and-error stage,the effective jamming rate of 72% can be guaranteed.(4)From the point of view of frame synchronization smart jamming of weapon guidance data link,aiming at the problem that it is difficult to jam the forward burst signal of weapon guidance data link,a smart jamming method of weapon guidance data link based on frame synchronization identification and precise guidance is proposed.Under the condition of little data and 4% bit error rate,the method can guarantee more than 80%frame synchronous recognition rate,and the average jamming power required by the smart jamming method is lower than that of the Gaussian noise jamming method.