火力与指挥控制2025，Vol.50Issue(10)：23-29,7.DOI:10.3969/j.issn.1002-0640.2025.10.003
基于Keystone变换的圆弧SAR成像算法
ArcSAR Imaging Algorithm Based on Keystone Transform
摘要
Abstract
Arc synthetic aperture radar(ArcSAR)can achieve azimuthal wide-range imaging,but azimuthal focussing is more challenging due to its intricate motion trajectory.In order to obtain the ideal imaging effect,an imaging algorithm applicable to the ArcSAR system is proposed by analyzing the geometric model and signal model of the system and introducing the Keystone transform.The algorithm first performs pulse compression,then performs the Keystone transform,which corrects some of the distance migration,and finally implements residual distance migration correction and azimuthal processing in the 2D frequency domain.The experimental results show that the proposed algorithm is able to realize the imaging of point targets,and the overall performance is better than the 2D frequency domain imaging algorithm,the RD algorithmand the fast imaging algorithm.关键词
圆弧合成孔径雷达(ArcSAR)/成像算法/Keystone变换/目标识别Key words
arc synthetic aperture radar(ArcSAR)/imaging algorithm/Keystone transform/target recognition分类
信息技术与安全科学引用本文复制引用
蒋留兵,唐亦文,车俐..基于Keystone变换的圆弧SAR成像算法[J].火力与指挥控制,2025,50(10):23-29,7.基金项目
国家自然科学基金(61561010) （61561010）
广西创新驱动发展专项项目(AA21077008) （AA21077008）
广西无线宽带通信与信号处理重点实验室2022年基金(GXKL06220102,GXKL06220108) （GXKL06220102,GXKL06220108）
(2019A51) （2019A51）
桂林电子科技大学研究生教育创新计划基金(2022YXW07,2023YXW02) （2022YXW07,2023YXW02）
桂林电子科技大学研究生教育创新计划基金资助项目(2022YCXS080) （2022YCXS080）
