现代雷达2025，Vol.47Issue(2)：1-20,20.DOI:10.16592/j.cnki.1004-7859.20241105004
星载高分宽幅Staggered SAR成像技术研究进展
Research Progress on Spaceborne High-resolution Wide-swath Staggered SAR Imaging Technology
摘要
Abstract
One of the future development trends in spaceborne synthetic aperture radar(SAR)is to have the capabilities for high-resolution and wide-swath imaging,but due to constraints imposed by minimum antenna area requirements,there is an inherent conflict between high-resolution and wide-swath imaging.To resolve this contradiction,various advanced SAR operational modes for high-resolution wide-swath imaging have been proposed.Among those,the Staggered SAR technique,which combines multiple elevation beams technology with variable pulse repetition frequency(PRF)technology,has emerged as a focal point of interest for scholars worldwide in the new generation of SAR systems.High-resolution wide-swath imaging is achieved by the multiple elevation beams technology using broad illumination and multi-channel echo reception in the range dimension;the variable pulse repetition interval(PRI)is used by the PRF technology to continuously shift the positions of blind areas,overcoming the fixed range gaps between sub-swaths caused by constant PRI and enabling gapless wide-swath imaging.Based on the spaceborne high-resolution wide range Staggered SAR system,the imaging modes,key technologies and derivative modes are analyzed in this paper,and a prospective outlook on future development trends is also offered.关键词
高分宽幅/Staggered合成孔径雷达/变脉冲重复间隔序列/多通道/合成孔径雷达成像Key words
high-resolution wide-swath/Staggered synthetic aperture radar(SAR)/variable pulse repetition interval(PRI)se-quence/multiple channels/SAR imaging分类
电子信息工程引用本文复制引用
齐欣,张云,刘子滔,马欣悦,姜义成..星载高分宽幅Staggered SAR成像技术研究进展[J].现代雷达,2025,47(2):1-20,20.基金项目
国家自然科学基金资助项目(61971163,62301191) （61971163,62301191）
北京强度环境联合创新基金资助项目(BQJJ202309) （BQJJ202309）
