针对强机动目标跟踪模型难以准确匹配以及跟踪滤波器容易发散的问题,提出一种基于参数自适应变化的强机动目标跟踪算法。对“当前”统计Jerk(improved Jerk model based on current statistics,CS-Jerk)跟踪模型中的机动频率及加速度变...针对强机动目标跟踪模型难以准确匹配以及跟踪滤波器容易发散的问题,提出一种基于参数自适应变化的强机动目标跟踪算法。对“当前”统计Jerk(improved Jerk model based on current statistics,CS-Jerk)跟踪模型中的机动频率及加速度变化率的极大值进行自适应处理,同时将强跟踪滤波器(strong tracking filter,STF)中的单重时变渐消因子调整为自适应变化的多重时变渐消因子,从而实现对强机动目标更高精度的跟踪。仿真实验结果表明,该算法提高了对强机动目标的跟踪精度。展开更多
On the basis of introducing the fundamental theory and the basic analysis steps of the sub model method, the strength of the new engine complex assembly structure was analyzed according to the properties of the engin...On the basis of introducing the fundamental theory and the basic analysis steps of the sub model method, the strength of the new engine complex assembly structure was analyzed according to the properties of the engine structures, some of the key parts of the engine were analyzed with refined mesh by sub model method and the error of the FEM solution was estimated by the extrapolation method. The example showed that the sub model can not only analyze the comlex structures without the restriction of the software and hardware of the computers, but get the more precise analysis result also. This method is more suitable for the strength analysis of the complex assembly structure.展开更多
文摘针对强机动目标跟踪模型难以准确匹配以及跟踪滤波器容易发散的问题,提出一种基于参数自适应变化的强机动目标跟踪算法。对“当前”统计Jerk(improved Jerk model based on current statistics,CS-Jerk)跟踪模型中的机动频率及加速度变化率的极大值进行自适应处理,同时将强跟踪滤波器(strong tracking filter,STF)中的单重时变渐消因子调整为自适应变化的多重时变渐消因子,从而实现对强机动目标更高精度的跟踪。仿真实验结果表明,该算法提高了对强机动目标的跟踪精度。
文摘On the basis of introducing the fundamental theory and the basic analysis steps of the sub model method, the strength of the new engine complex assembly structure was analyzed according to the properties of the engine structures, some of the key parts of the engine were analyzed with refined mesh by sub model method and the error of the FEM solution was estimated by the extrapolation method. The example showed that the sub model can not only analyze the comlex structures without the restriction of the software and hardware of the computers, but get the more precise analysis result also. This method is more suitable for the strength analysis of the complex assembly structure.
