电波科学学报2025，Vol.40Issue(1)：124-131,8.DOI:10.12265/j.cjors.2024040
海面转向舰船尾迹的电磁散射建模与SAR成像模拟
Electromagnetic scattering modeling and SAR image simulation of a turning ship wake on sea surface
摘要
Abstract
Aiming at electromagnetic scattering modeling and SAR imaging simulation of the turning ship wake on rough sea surfaces,a composite model of the turning ship wake on sea surface is constructed based on the Kelvin ship wake generation theory and linear sea surface model.With faceted two-scale model,the coherent and incoherent scattering components of a facet are calculated using Kirchhoff approximation and perturbation model,respectively,and the scattering coefficients of each resolution cell in imaging scene are thus obtained using the faceted two-scale model.The scattering coefficient and SAR system impulse response function are convolved to obtain the echo signal of the imaging scene illuminated antenna beam,while a two-dimensional focused SAR image of the scene is obtained by using ωK imaging algorithm to focus the raw SAR echo signal.A comparison is made between simulated wake SAR images and TerraSAR-X measured SAR images,and the results show good similarity between the two images,verifying the effectiveness of electromagnetic scattering modeling and SAR imaging simulation the faceted two-scale model utilized in this paper.关键词
舰船尾迹/面元双尺度模型/合成孔径雷达(SAR)成像/SAR聚焦成像Key words
ship wake/faceted two-scale model/synthetic aperture radar(SAR)imaging/SAR focused imaging分类
信息技术与安全科学引用本文复制引用
杨鹏举,贾浩文,吴瑞..海面转向舰船尾迹的电磁散射建模与SAR成像模拟[J].电波科学学报,2025,40(1):124-131,8.基金项目
国家自然科学基金(62061048,62461054) （62061048,62461054）
陕西省重点研发计划(2023-YBGY-254) （2023-YBGY-254）
