Various types of models including engineering models and evolution models have been developed to understand space debris environment since 1960s. Evolution model, consisting of a set of supporting models such as Launc...Various types of models including engineering models and evolution models have been developed to understand space debris environment since 1960s. Evolution model, consisting of a set of supporting models such as Launch Model, Breakup Model and Atmosphere Model, can reliably predicts the evolution of space debris environment. Of these supporting models, Breakup Model is employed to describe the distribution of debris and debris cloud during a explosion or collision case which is one of the main factors affecting the amount of total space debris. An analytical orbit debris environment model referred to as the "Particles In Boxes" model has been introduced. By regarding the orbit debris as the freedom particles running in the huge volume, the sources and sinks mechanism is established. Then the PIB model is expanded to the case of multiple species in multiple tier system. Combined with breakup model, the evolution of orbit debris environment is predicted.展开更多
经典随机耦合模型在对电子设备的电磁脉冲效应进行预测时,边界条件设置在无穷远处,存在短迹线效应问题.采用设置辐射阻抗短迹线调制系数的方法,建立了二端口波混沌腔体短迹线随机耦合模型(Short-Orbit Random Coupling Model,SORCM),统...经典随机耦合模型在对电子设备的电磁脉冲效应进行预测时,边界条件设置在无穷远处,存在短迹线效应问题.采用设置辐射阻抗短迹线调制系数的方法,建立了二端口波混沌腔体短迹线随机耦合模型(Short-Orbit Random Coupling Model,SORCM),统计分析了目标点处感应电压的均方根误差随短迹线最大长度的变化关系.在不同的频段范围内,将SORCM计算结果的统计特性和实验结果进行了对比分析,验证了所建立模型的正确性.和经典随机耦合模型相比,SORCM的计算结果更加接近实测结果,可用于复杂电子设备电磁脉冲效应的预测和分析.展开更多
文摘Various types of models including engineering models and evolution models have been developed to understand space debris environment since 1960s. Evolution model, consisting of a set of supporting models such as Launch Model, Breakup Model and Atmosphere Model, can reliably predicts the evolution of space debris environment. Of these supporting models, Breakup Model is employed to describe the distribution of debris and debris cloud during a explosion or collision case which is one of the main factors affecting the amount of total space debris. An analytical orbit debris environment model referred to as the "Particles In Boxes" model has been introduced. By regarding the orbit debris as the freedom particles running in the huge volume, the sources and sinks mechanism is established. Then the PIB model is expanded to the case of multiple species in multiple tier system. Combined with breakup model, the evolution of orbit debris environment is predicted.
文摘经典随机耦合模型在对电子设备的电磁脉冲效应进行预测时,边界条件设置在无穷远处,存在短迹线效应问题.采用设置辐射阻抗短迹线调制系数的方法,建立了二端口波混沌腔体短迹线随机耦合模型(Short-Orbit Random Coupling Model,SORCM),统计分析了目标点处感应电压的均方根误差随短迹线最大长度的变化关系.在不同的频段范围内,将SORCM计算结果的统计特性和实验结果进行了对比分析,验证了所建立模型的正确性.和经典随机耦合模型相比,SORCM的计算结果更加接近实测结果,可用于复杂电子设备电磁脉冲效应的预测和分析.
