光学学报, 2016, 36 (7): 0729002, 网络出版: 2016-07-08  

任意体目标激光波束的散射场量统计矩及非相干分量比

Statistical Moment and Incoherent Component Ratio of Laser Beam Scattering from Targets with Arbitrary Shapes
作者单位
1 西安理工大学自动化与信息工程学院, 陕西 西安 710048
2 咸阳师范学院物理与电子工程学院, 陕西 咸阳712000
3 陕西学前师范学院物理与电子技术系, 陕西 西安 710100
摘要
推导了任意体目标高斯波束的散射场量本征统计矩。以椭球体目标为例,通过数值方法研究体目标在激光波束入射下,三种不同材料的单站散射场量互相关函数、协方差及其非相干散射分量比。数值计算椭球类目标非相干散射分量比随散射角的变化情况,结果表明:目标非相干分量在总散射分量中的比重较小,目标姿态、表面材料及其粗糙度对其散射场量非相干分量比有影响,粗糙面越光滑,非相干分量比越小;金属类材料比非金属镀漆材料的非相干分量比小;具有缩比关系的目标散射场量的非相干分量比的分布趋势基本相同,仅其数值略微有些差别。
Abstract
Under a Gaussian beam incidence, the fundamental statistical moments of Gaussian beam scattering fields from targets with arbitrary shapes are derived. Taking an ellipsoid-shaped target as an example, the correlation function, covariance, and incoherent component ratio of the scattering fields in three different materials are studied by the numerical method. The variation of the incoherent component ratio of the ellipsoidal target with the scattering angle is numerically obtained. The results show that the incoherent component takes only a small proportion of the total scattering components. The target pose, surface material and its roughness have influence on the incoherent component ratio. The smoother the rough surface is, the smaller the incoherent component ratio is. The incoherent component ratio of metal material is smaller than that of non-metallic painting material. The incoherent component ratio of the scattered field from the scaled target has a similar distribution with the above, except for some difference in value.

王明军, 柯熙政, 李应乐, 吴鹏飞. 任意体目标激光波束的散射场量统计矩及非相干分量比[J]. 光学学报, 2016, 36(7): 0729002. Wang Mingjun, Ke Xizheng, Li Yingle, Wu Pengfei. Statistical Moment and Incoherent Component Ratio of Laser Beam Scattering from Targets with Arbitrary Shapes[J]. Acta Optica Sinica, 2016, 36(7): 0729002.

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