火力与指挥控制2024，Vol.49Issue(9)：18-24,7.DOI:10.3969/j.issn.1002-0640.2024.09.003
基于逆Radon变换的圆迹SAR三维成像算法
Circular SAR 3D Imaging Algorithm Based on Inverse Radon Transform
摘要
Abstract
With the increasing application demand for synthetic aperture radar(SAR),the imaging mode of circular SAR appears,which solves the problem that the traditional linear trajectory SAR can only obtain two-dimensional slant distance images,and has higher application potentials in topographic mapping,building extrac-tion,disaster assessment and other fields.The existing circular SAR three-dimensional imaging algorithm still has such problems as large computation load and complex implementation,etc.through the combination of the slant distance geometric analysis of the circular SAR model and the echo signal model,the wave-number domain compensation function is designed,and the range compression curve is corrected to the sine curve with zero base-line.The inverse Radon transform is used to realize the two-dimensional focus of the sinusoidal curve of the tar-get.By stacking the two-dimensional imaging results of each height plane,three-dimensional imaging of the tar-get is realized.Finally,the imaging quality of the proposed algorithm is analyzed by simulation,and the effective-ness of 3-D imaging of the proposed algorithm is verified.关键词
圆迹SAR/逆Radon变换/三维成像/算法Key words
circular SAR/inverse Radon transform/3D imaging/algorithm分类
电子信息工程引用本文复制引用
车俐,欧阳龙华,蒋留兵..基于逆Radon变换的圆迹SAR三维成像算法[J].火力与指挥控制,2024,49(9):18-24,7.基金项目
国家自然科学基金(61561010) （61561010）
广西创新驱动发展专项基金(桂科AA21077008) （桂科AA21077008）
"广西无线宽带通信与信号处理重点实验室2022年主任基金(GXKL06220102,GXKL06220108) （GXKL06220102,GXKL06220108）
八桂学者专项经费基金(2019A51) （2019A51）
桂林电子科技大学研究生教育创新计划基金资助项目(2022YXW07,2022YCXS080,2023YCXS022) （2022YXW07,2022YCXS080,2023YCXS022）
