Abstract:

The chaff screen jamming construction in the sea battlefield environment is easy to lead to self-defense jamming failure due to the insufficient consideration of wind direction, wind speed, and other factors and the lack of relevant quantitative models. To address this problem, a new chaff screen jamming construction method is proposed. On the basis of the analysis of the chaff screen jamming mechanism, the jamming scene model is constructed, including the missile movement model, the ship movement model, and the chaff screen morphological model. With comprehensive consideration of the effectiveness of jamming and the depletion of resources, the idea of using the gray wolf algorithm to obtain the chaff screen jamming construction scheme is proposed. The corresponding constraints (shielding effectiveness constraint, centroid drag validity constraint, and jamming ability constraint), objective function and replenishment strategy are constructed, and the gray wolf algorithm is improved by logistic chaotic mapping and reverse learning strategy. The following conclusions are drawn through the simulation case analysis. The proposed chaff screen jamming construction method has a fast optimization rate and can ensure that ships can always carry out effective self-defense jamming during the entire confrontation process. The chaff screen axis constructed at the initial moment is basically perpendicular to the bullet axis and the chaff screen center of mass is basically near the bullet axis. The wind direction and wind speed have less influence on the self-defense jamming effect. The initial bullet distance mainly affects the amount of chaff and the initial anti-ship missile attack direction has a more obvious impact on the self-defense jamming effect, which is the best when attacking from the rear of the ship and the worst when attacking from the bow.

Key words: chaff screen, gray wolf algorithm, jamming scene model, morphological model, replenishment strategy