基于尺度概率模型的目标回声不确定性研究
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摘要
针对水下目标信息不完备条件下回声仿真计算的可信度,提出一种基于目标尺度概率模型的水下回声计算不确定性方法。以Benchmark潜艇为例,将艇长和艇宽作为随机变量,建立二者的联合概率分布模型,利用快速多极边界元法结合概率分布模型计算潜艇回声频率响应函数及其概率。该方法能够定性给出不同尺度模型回声计算结果及其概率,对信息不完备条件下回声计算的可信度研究具有一定的参考意义。
An incertitude submarine echo simulation method based on scale probability distribution function(SPDF) has been presented for estimating simulation reliability. The two-dimensional joint distribution function were established by treating length and breadth of Benchmark submarine as random variables. And Fast Multi-pole Boundary Element Method(FMBEM) were used to calculate frequency response function of submarine echoes by combining with SPDF. The result of echo simulation and the probability in different scale models can be obtained by this method. And the method can provide a certain reference for submarine echo simulation reliability under the condition of incomplete information.
引文
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