电波科学学报2024，Vol.39Issue(2)：271-279,9.DOI:10.12265/j.cjors.2023108
基于电磁散射模型的海上舰船双基SAR图像仿真
Bistatic SAR simulation of ships in marine environments via EM scattering models
摘要
Abstract
Synthetic aperture radar(SAR)plays an important role in remote sensing and target detection and identification of the terrain and marine environments.Compared with a monostatic SAR,a bistatic SAR can observe the scene from different directions by adjusting the position of transmitter and receiver,therefore,the simulation and analyses of bistatic SAR images of ships in marine environments can provide methods and means for feature understanding,detection and recognition of noncooperative targets,which is of great significance in target detection and recognition.For this purpose,based on the facet-based simplified small slope approximation(FBS-SSA)with geometrical optics and physical optics(GO/PO)hybrid method,this paper proposes a simulation method for bistatic SAR of a composite ship-ocean scene,and SAR images of maritime ships are simulated.The effects of ship orientation,coordinates of the transmitter and the receiver,polarization,sea state on radar images are analyzed.The results indicate that the bistatic angles,polarization and ship orientations have effects on SAR images.Therefore,SAR image features from different angles can be obtained by changing the radar angle,which benefits the recognition of ships in marine environments.In addition,shadow features in SAR images can also serve as an auxiliary mean for ship recognition.关键词
合成孔径雷达(SAR)/电磁散射/目标识别/双基地/图像仿真Key words
synthetic aperture radar(SAR)/electromagnetic scattering/target recognition/bistatic configuration/image simulation分类
信息技术与安全科学引用本文复制引用
范文娜,李金星,张民..基于电磁散射模型的海上舰船双基SAR图像仿真[J].电波科学学报,2024,39(2):271-279,9.基金项目
国家自然科学基金(62201443) （62201443）
陕西省教育厅专项科研计划(22JK0427) （22JK0427）
西安航空学院校级基金(2020KY0207) （2020KY0207）
