Sensor management schemes are calculated to reduce target threat level assessment risk in this paper.Hidden Markov model and risk theory are combined to build the target threat level model firstly.Then the target thre...Sensor management schemes are calculated to reduce target threat level assessment risk in this paper.Hidden Markov model and risk theory are combined to build the target threat level model firstly.Then the target threat level estimation risk is defined.And the sensor management schemes are optimized with the smallest target threat level assessment risk.What’s more,the game theory is applied to calculate the optimal sensor management scheme.Some simulations are conducted to prove that the proposed sensor management method is effective.展开更多
It is accepted as a well-known fact that in different places on the Earth’s crust,a similar anthropogenic impact causes a dissimilar response.Seismic zoning maps are not designed to predict such geodynamic hazards as...It is accepted as a well-known fact that in different places on the Earth’s crust,a similar anthropogenic impact causes a dissimilar response.Seismic zoning maps are not designed to predict such geodynamic hazards as rock bursts,induced earthquakes,reactivation of tectonic faults,etc.,and therefore require careful adjustments in places of intense impact on the subsurface strata.In this regard,we consider the classification of the Earth’s crustal areas according to the degree of geodynamic hazard,i.e.its potential geodynamic response to anthropogenic intervention.This classification is based on the concept that there exists a critically stressed layer within the Earth’s crust.It is believed that such a critically stressed layer within the Earth’s crust extends from the Earth’s surface to a certain depth,and each point depends on the nature of the interaction between crustal blocks of different hierarchical levels.From this perspective,anthropogenic impact,such as mining operations,represents a direct impact upon the critically stressed zone.We recognize the hypothesis that the thicker the critical stressed rock layer,the stronger the response might be to anthropogenic intervention,as it has more accumulated energy.Four categories of geodynamic threat have been found and mapped.To verify this classification,the manifestations of the geodynamic hazards were studied.The intensity of geodynamic hazard increased from the first area to the fourth area.The phenomenon of large induced seismic events with hypocenters at great depths is explained on the basis of this theory,and could be associated with anthropogenic impacts from the surface directly on the regional zone of the critically stressed rock massif.The approach can be used to assess the geodynamic consequences of human exposure to the Earth’s crust.展开更多
针对协同干扰任务分配问题,提出一种基于改进遗传算法的协同干扰资源分配方法。采用基于熵权法的逼近理想解排序法(technique for order preference by similarity to an ideal solution,TOPSIS)对目标雷达在搜索模式与跟踪模式下进行...针对协同干扰任务分配问题,提出一种基于改进遗传算法的协同干扰资源分配方法。采用基于熵权法的逼近理想解排序法(technique for order preference by similarity to an ideal solution,TOPSIS)对目标雷达在搜索模式与跟踪模式下进行威胁等级评估;分析影响干扰机干扰效果的因素,建立协同干扰效益评估模型,并构建以多部干扰机总干扰效益为目标函数、单部干扰机干扰能力为约束条件的干扰资源分配模型;从增加精英保留操作、使用自适应参数等方面改进遗传算法,并对干扰资源分配模型进行寻优解算。仿真结果表明:改进遗传算法相比标准遗传算法运行速度明显提高,且具有更高的寻优概率,能较好地解决协同干扰资源分配问题。展开更多
文摘Sensor management schemes are calculated to reduce target threat level assessment risk in this paper.Hidden Markov model and risk theory are combined to build the target threat level model firstly.Then the target threat level estimation risk is defined.And the sensor management schemes are optimized with the smallest target threat level assessment risk.What’s more,the game theory is applied to calculate the optimal sensor management scheme.Some simulations are conducted to prove that the proposed sensor management method is effective.
基金partially used the materials obtained during grant implementation No.GК-1406(2009)of the Russian Ministry of Science and Education
文摘It is accepted as a well-known fact that in different places on the Earth’s crust,a similar anthropogenic impact causes a dissimilar response.Seismic zoning maps are not designed to predict such geodynamic hazards as rock bursts,induced earthquakes,reactivation of tectonic faults,etc.,and therefore require careful adjustments in places of intense impact on the subsurface strata.In this regard,we consider the classification of the Earth’s crustal areas according to the degree of geodynamic hazard,i.e.its potential geodynamic response to anthropogenic intervention.This classification is based on the concept that there exists a critically stressed layer within the Earth’s crust.It is believed that such a critically stressed layer within the Earth’s crust extends from the Earth’s surface to a certain depth,and each point depends on the nature of the interaction between crustal blocks of different hierarchical levels.From this perspective,anthropogenic impact,such as mining operations,represents a direct impact upon the critically stressed zone.We recognize the hypothesis that the thicker the critical stressed rock layer,the stronger the response might be to anthropogenic intervention,as it has more accumulated energy.Four categories of geodynamic threat have been found and mapped.To verify this classification,the manifestations of the geodynamic hazards were studied.The intensity of geodynamic hazard increased from the first area to the fourth area.The phenomenon of large induced seismic events with hypocenters at great depths is explained on the basis of this theory,and could be associated with anthropogenic impacts from the surface directly on the regional zone of the critically stressed rock massif.The approach can be used to assess the geodynamic consequences of human exposure to the Earth’s crust.
文摘针对协同干扰任务分配问题,提出一种基于改进遗传算法的协同干扰资源分配方法。采用基于熵权法的逼近理想解排序法(technique for order preference by similarity to an ideal solution,TOPSIS)对目标雷达在搜索模式与跟踪模式下进行威胁等级评估;分析影响干扰机干扰效果的因素,建立协同干扰效益评估模型,并构建以多部干扰机总干扰效益为目标函数、单部干扰机干扰能力为约束条件的干扰资源分配模型;从增加精英保留操作、使用自适应参数等方面改进遗传算法,并对干扰资源分配模型进行寻优解算。仿真结果表明:改进遗传算法相比标准遗传算法运行速度明显提高,且具有更高的寻优概率,能较好地解决协同干扰资源分配问题。
