基于FSV技术的复杂水面目标电磁散射评估研究

Evaluation of Electromagnetic Scattering from Complex Surface Targets Based on FSV

针对计算电磁学仿真与试验结果评估,特征选择性验证技术(FSV)已经发展成为一种专家模拟意见的新技术。基于雷达散射截面积RCS这一电磁散射特征量,可以用计算机仿真与实船试验手段得到,仿真和试验这两类散射数据集可展现出趋势和量级两个方面的相似性。本文给出了一种结合FSV针对复杂水上目标散射问题适用性的基本评估尝试,本评估研究将美国密歇根湖的典型风驱谱模型引入粗糙湖面的电磁散射计算之中,JONSWAP海谱模型则被用于计算粗糙海面的散射。研究结果表明,FSV技术在舰船复合散射数据评价中具有较好的应用价值。

Feature Selection Verification (FSV) has been developed as a new technique for simulating expert opinions on the evaluation of computational electromagnetic simulation and test results.Based on the Radar Cross Section (RCS),which is the characteristic of electromagnetic scattering,the two kinds of scattering data sets can show the similarity in trend and magnitude.In this paper,an attempt to evaluate the applicability of FSV to the scattering problem of complex water targets is presented.A typical wind-driven spectrum model from Lake Michigan is introduced into the calculation of electromagnetic scattering from rough lake surface,Jonswap sea spectrum model is used to calculate the scattering from rough sea surface.The results show that the FSV technique has a good application value in the evaluation of ship composite scattering data.