CAJ | 학술논문

采用了一种混合时频算法来克服传统时频算法ISAR成像时交叉项干扰问题，提高成像分辨率；提出了“数据分割-时频分析与采样-数据拼接”成像加速方法提高ISAR成像处理效率。应用强散射回波点目标某飞机模型做仿真实验。对比传统ISAR时频分析方法和本文方法成像表明：本方法成像质量高，关键细节清晰可见，基本消除了无交叉项干扰，时频分辨率高：成像加速算法较传统成像算法缩短了一半以上的成像处理时间，成像实时性得到了显著提升。
채용료일충혼합시빈산법래극복전통시빈산법ISAR성상시교차항간우문제，제고성상분변솔；제출료“수거분할-시빈분석여채양-수거병접”성상가속방법제고ISAR성상처리효솔。응용강산사회파점목표모비궤모형주방진실험。대비전통ISAR시빈분석방법화본문방법성상표명：본방법성상질량고，관건세절청석가견，기본소제료무교차항간우，시빈분변솔고：성상가속산법교전통성상산법축단료일반이상적성상처리시간，성상실시성득도료현저제승。
In order to overcome the cross-term interference of the traditional time-frequency calculation for the inverse synthetic aperture radar ( ISAR) , a hybridized Time-Frequency algorithm is presented to improve the imaging resolu-tion.Firstly, the imaging processing efficiency of ISAR is raised using a novel imaging speed method of the data seg-mentation, time-frequency analysis and sampling and data matching.Secondly, a model plane with the strong scatter-ing echo point target simulation experiment is carried out.Finally, the traditional ISAR frequency analysis and the new proposed method are compared.The experimental results show that the proposed method has the following advan-tages, such as high quality of image formation, more clearly dealing with key details, almost eliminating the effects of cross-term interference and high Time-Frequency resolution.Imaging speed algorithm shortens more a half time of the imaging processing than traditional one, and the real-time imaging is significantly increased.