基于尾迹极化SAR图像的舰船速度反演  

Ship Velocity Inversion Based on Polarized SAR Images of Ship Wakes

作　　者：范文娜 毕杨 翟维 刘坤 逯九利 FAN Wenna;BI Yang;ZHAI Wei;LIU Kun;LU Jiuli(School of Electronic Engineering,Xi'an Aeronautical University,Xi'an 710077)

机构地区：[1]西安航空学院电子工程学院,西安710077

出　　处：《舰船电子工程》2022年第6期76-79,共4页Ship Electronic Engineering

基　　金：西安航空学院校级基金项目(编号:2020KY0207);西安航空学院科研启动经费资助。

摘　　要：开展海上舰船目标的速度反演在海洋航运监测方面有着重要意义。针对舰船运动速度反演,论文首先针对舰船尾迹的全极化SAR图像特征开展仿真,探究不同极化下SAR图像中舰船尾迹特征的差异。进而结合基于尾迹的舰船速度反演方法,利用不同极化下的舰船尾迹SAR图像开展舰船速度反演,分析海况、舰船运动速度和极化对反演结果的影响。研究结果表明,同极化舰船尾迹SAR图像中能够较好地体现出尾迹波浪特征,而交叉极化图像难以体现出波浪特征,即便如此,不同极化下的尾迹SAR图像都可以用来实现舰船速度的高精度反演。Velocity inversion of ship targets is of great significance for ship monitoring in marine environments.Aiming at the inversion of ship velocity,this paper firstly simulates the characteristics of ship wake in fully polarized SAR images,and explores the differences of ship wake characteristics in SAR images under different polarities.Then,the ship velocity inversion method based on wake is used to analyze the effects of sea state,ship velocity and polarization on the ship velocity inversion results based on SAR images of ship wakes under different polarization conditions.Numerical results show that the wake wave characteristics can be better reflected in the co-polarized SAR images,but it is difficult to be reflected in the cross-polarized mode.Even so,the SAR image of ship wake under different polarizations can be used to achieve high precision inversion of ship velocity.

关 键 词：舰船尾迹 SAR图像 速度反演 全极化 

分 类 号：TN014[电子电信—物理电子学]