CAJ | 학술논문

为了解决在平流层环境下，ISAR 成像过程中存在微动成分时对成像的干扰问题，提出了一种基于不变矩的微动目标二维平流层ISAR成像算法。该算法首先利用不变矩工具对不同子孔径的回波分量进行分类，然后将影响成像质量的数据进行分离，最后利用分离后的数据进行子孔径拼接成像。该方法处理过程简单，实时性强，并能明显改善成像效果。
위료해결재평류층배경하，ISAR 성상과정중존재미동성분시대성상적간우문제，제출료일충기우불변구적미동목표이유평류층ISAR성상산법。해산법수선이용불변구공구대불동자공경적회파분량진행분류，연후장영향성상질량적수거진행분리，최후이용분리후적수거진행자공경병접성상。해방법처리과정간단，실시성강，병능명현개선성상효과。
To resolve the micromotion in the HAPS(high altitude platform station) ISAR system, the invariant moment method for ISAR imaging with micro parts was proposed. Firstly, invariant moment tool was applied to classify the echoes of different sub-aperture, and then the sub-aperture echoes reducing the quality of image was separated. Finally the remaining echoes were used to do sub-aperture splicing imaging. From the simulation results, the algorithm is proved to be simple and can improve the quality of ISAR image obviously.