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尾流飞行风险概率拓扑图的构建方法

DOI: 10.13700/j.bh.1001-5965.2013.0533, PP. 1044-1054

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Abstract:

考虑尾流遭遇情形下的不确定性与随机性因素,利用蒙特卡洛法对三维空间内的每个尾流遭遇点进行大数据量的仿真实验,提取了尾流遭遇情形下的三维极值参数,验证了一维的极值参数符合广义极值(GEV)分布;提出了三维极值参数的四参数变权重Copula(FPAVWCopula)模型,拟合优度检验的结果表明FPAVWCopula具有比其他Copula更高的精度;利用FPAVWCopula对尾流场内每个网格采样点上的三维极值参数进行了辨识,计算出了尾流空间的风险概率指标分布情况;在此基础上对尾流风险概率拓扑在不同发展阶段的结构特征进行了分析,构建了可视化的二维及三维风险概率结构图,可用来研究尾流场内的风险规避策略及算法.所提方法及思路亦可对其他内外部环境因素影响下的飞行风险概率评估及拓扑结构可视化等热点研究方向提供参考.

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