空天预警研究学报2025，Vol.39Issue(6)：398-403,6.DOI:10.3969/j.issn.2097-180X.2025.06.002
基于等效斜视模型的SAR动目标成像方法
SAR moving target imaging method based on equivalent squint model
陈一畅 1刘昊翔 2周乐 1贾航川3
作者信息
- 1. 空军预警学院,武汉 430019
- 2. 93251部队,黑龙江 齐齐哈尔 161005
- 3. 94028部队,陕西 咸阳 712201
- 折叠
摘要
Abstract
Aiming at the challenges of difficult phase correction and stringent focusing conditions in synthetic aperture radar(SAR)moving target echoes,this paper proposes a moving target imaging method based on an equivalent squint model.Firstly,by utilizing the principle of relative motion,the target motion parameters are equivalently converted into SAR squint angle modulation parameters.Then,the squint imaging algorithm is used to process the echoes,and by taking the minimization of image entropy as objective function to globally search for the optimal solution within the equivalent parameter space.Finally,by analyzing the differences in the influence of the two-dimensional velocity of the target on imaging,the parameter search step size is optimized to enhance ef-ficiency.Simulation results validate the effectiveness of this method,and also provide a globally optimal and adaptable solution for single-channel SAR moving target imaging.关键词
合成孔径雷达/动目标成像/图像熵/斜视角Key words
synthetic aperture radar(SAR)/moving target imaging/image-entropy/squint angle分类
信息技术与安全科学引用本文复制引用
陈一畅,刘昊翔,周乐,贾航川..基于等效斜视模型的SAR动目标成像方法[J].空天预警研究学报,2025,39(6):398-403,6.
