Statistical Modeling of Submarine Target Strength Based on Distribution Function
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摘要: 为弥补潜艇目标强度确定性预报模型的不足, 开展了标准潜艇的目标强度统计建模研究, 以更好地满足实际工程应用的要求。建立基于Parzen窗估计的目标强度密度函数模型; 为获得该密度函数模型统一、简洁的表达式, 分别基于常用的分布函数模型对目标强度分布的估计结果进行最优拟合; 并对χ2分布模型进行改进, 得到χ2三参数分布模型。通过误差比较可知, 改进的χ2三参数分布模型可较好地描述潜艇目标强度分布特征, 所建立的统计建模方法及得到的模型参数可为潜艇目标的仿真提供参考。Abstract: Statistical modeling of benchmark submarine target strength(TS) is performed to cover the shortage of deterministic forecast model. A TS density function model is established by Parzen window estimation. Then to get an unified and succinct expression of the density function model, typical distribution function models are used for optimal fitting of TS estimation. Ultimately an improved χ2 distribution model with three parameters is established. Errors comparison indicates that this improved χ2-distribution model can describe the submarine TS reasonably. This study may provide a reference for submarine target simulation
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Key words:
- benchmark submarine /
- target strength /
- statistical modeling /
- χ2-distribution
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