Based on the analysis for the interception process of ship-to-air missile system to the anti-ship missile stream, the antagonism of ship-to-air missile and anti-ship missile stream was modeled by Monte Carlo method. T...Based on the analysis for the interception process of ship-to-air missile system to the anti-ship missile stream, the antagonism of ship-to-air missile and anti-ship missile stream was modeled by Monte Carlo method. This model containing the probability of acquiring anti-ship missile, threat estimation, firepower distribution, interception, effectiveness evaluation and firepower turning, can dynamically simulate the antagonism process of anti-ship missile attack stream and anti-air missile weapon system. The anti-ship missile's saturation attack stream for different ship-to-air missile systems can be calculated quantitatively. The simulated results reveal the relations among the anti-ship missile saturation attack and the attack intensity of anti-ship missile, interception mode and the main parameters of anti-air missile weapon system. It provides a theoretical basis for the effective operation of anti-ship missile.展开更多
The paper mainly studies the first attack probability (FAP) of an attacker level bombing anti-air radars through analyzing the radiant point orientation and attack (RPOA) process of attackers. Firstly, the searching t...The paper mainly studies the first attack probability (FAP) of an attacker level bombing anti-air radars through analyzing the radiant point orientation and attack (RPOA) process of attackers. Firstly, the searching target process is analyzed, and a corresponding target finding model is brought forward. Secondly, the target approaching process is concretely analyzed when the attacker levelly bombs the anti-air radar, and a corresponding target approaching model is presented. Finally, a demonstration is given to analyze the major factors in the model and prove its validity.展开更多
The organization of coordinated attack and the selection of aiming point which affect hit probability were analyzed for the countermeasures taken by the hostile submarines at two helicopters' coordinated attack.A ...The organization of coordinated attack and the selection of aiming point which affect hit probability were analyzed for the countermeasures taken by the hostile submarines at two helicopters' coordinated attack.A computational model of coordinated attack parameters,a model of submarine maneuver,and a model of noise jammer were established.Compared to single helicopter' torpedo attack,the coordinated attack of two helicopters can effectively increase the hit probability of torpedo and achieve the higher target detecting probability under counterwork condition.展开更多
反后门学习方法(anti-backdoor learning,ABL)在利用中毒数据集进行模型训练过程中能实时检测并抑制后门生成,最终得到良性模型。但反后门学习方法存在后门样本和良性样本无法有效隔离、后门消除效率不高的问题。为此,提出遗忘学习前置...反后门学习方法(anti-backdoor learning,ABL)在利用中毒数据集进行模型训练过程中能实时检测并抑制后门生成,最终得到良性模型。但反后门学习方法存在后门样本和良性样本无法有效隔离、后门消除效率不高的问题。为此,提出遗忘学习前置的反后门学习方法(anti-backdoor learning method based on preposed unlearning,ABLPU),在隔离阶段对训练样本增加提纯操作,达到有效隔离良性样本的目标,在消除阶段采用后门遗忘-模型再训练的范式,并引入遗忘系数,实现后门的高效消除。在CIFAR-10数据集上针对后门攻击方法BadNets,遗忘学习前置的反后门学习方法较反后门学习方法(基线方法)良性准确率提高1.21个百分点,攻击成功率下降1.38个百分点。展开更多
文摘Based on the analysis for the interception process of ship-to-air missile system to the anti-ship missile stream, the antagonism of ship-to-air missile and anti-ship missile stream was modeled by Monte Carlo method. This model containing the probability of acquiring anti-ship missile, threat estimation, firepower distribution, interception, effectiveness evaluation and firepower turning, can dynamically simulate the antagonism process of anti-ship missile attack stream and anti-air missile weapon system. The anti-ship missile's saturation attack stream for different ship-to-air missile systems can be calculated quantitatively. The simulated results reveal the relations among the anti-ship missile saturation attack and the attack intensity of anti-ship missile, interception mode and the main parameters of anti-air missile weapon system. It provides a theoretical basis for the effective operation of anti-ship missile.
文摘The paper mainly studies the first attack probability (FAP) of an attacker level bombing anti-air radars through analyzing the radiant point orientation and attack (RPOA) process of attackers. Firstly, the searching target process is analyzed, and a corresponding target finding model is brought forward. Secondly, the target approaching process is concretely analyzed when the attacker levelly bombs the anti-air radar, and a corresponding target approaching model is presented. Finally, a demonstration is given to analyze the major factors in the model and prove its validity.
文摘The organization of coordinated attack and the selection of aiming point which affect hit probability were analyzed for the countermeasures taken by the hostile submarines at two helicopters' coordinated attack.A computational model of coordinated attack parameters,a model of submarine maneuver,and a model of noise jammer were established.Compared to single helicopter' torpedo attack,the coordinated attack of two helicopters can effectively increase the hit probability of torpedo and achieve the higher target detecting probability under counterwork condition.
文摘反后门学习方法(anti-backdoor learning,ABL)在利用中毒数据集进行模型训练过程中能实时检测并抑制后门生成,最终得到良性模型。但反后门学习方法存在后门样本和良性样本无法有效隔离、后门消除效率不高的问题。为此,提出遗忘学习前置的反后门学习方法(anti-backdoor learning method based on preposed unlearning,ABLPU),在隔离阶段对训练样本增加提纯操作,达到有效隔离良性样本的目标,在消除阶段采用后门遗忘-模型再训练的范式,并引入遗忘系数,实现后门的高效消除。在CIFAR-10数据集上针对后门攻击方法BadNets,遗忘学习前置的反后门学习方法较反后门学习方法(基线方法)良性准确率提高1.21个百分点,攻击成功率下降1.38个百分点。
