摘要
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。
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 1SAR image obviously.
出处
《通信学报》
EI
CSCD
北大核心
2013年第8期70-75,共6页
Journal on Communications
基金
国家自然科学基金资助项目(61143008)
国家高新技术研究发展计划("863"计划)基金资助项目(2011aa01a204)~~
