太空中高分辨率宽带SAR系统和成像方法的最新发展
Ruizhen Song1,2, Wei Wang1,2, Weidong Yu1,2
1Department of Space Microwave Remote Sensing System, Aerospace Information Research Institute, Chinese Academy of Sciences, Beijing 100090, China.
Sensors (Basel, Switzerland)
|September 28, 2024
概括
在太空中的合成光圈雷达 (SAR) 中实现高分辨率宽扫描 (HRWS) 是一个挑战. 本综述详细介绍了用于先进HRWS SAR成像的近距离多通道,数字光束成形和PRI变异技术.
科学领域:
- 遥感 遥感 遥感 遥感
- 电气工程 电气工程
- 信号处理 信号处理
背景情况:
- 在太空中运载的合成光圈雷达 (SAR) 系统面临的局限性是,在同时实现高向分辨率和宽带宽度时,它们面临着限制.
- 最小的天线面积限制使得传统的SAR无法达到高分辨率的广图像 (HRWS) 成像.
- 现有的HRWS SAR成像技术包括近距离多通道,数字光束成形 (DBF) 和脉冲重复间隔 (PRI) 变化.
研究的目的:
- 提供对三个关键 HRWS SAR 成像技术的最新发展进行全面的审查.
- 分析关键的HRWS SAR参数,并介绍基本的SAR概念.
- 为这些先进的SAR技术提供对比,挑战和解决方案的见解.
主要方法:
- 详细介绍了近距离多通道,数字光束成形 (DBF) 和脉冲重复间隔 (PRI) 变化技术.
- 解释核心原则,经典的技术细节,以及每种技术的最新进展.
- 讨论的HRWS SAR成像方法的比较分析.
主要成果:
- 这篇论文介绍了HRWS SAR成像技术的结构概述,从基本概念发展到复杂的技术细节.
- 它强调了与每个研究技术相关的挑战和相应的解决方案.
- 提供了比较的见解,以区分阿齐木斯多通道,DBF和PRI变化方法的优缺点.
结论:
- 该审查巩固了有关先进HRWS SAR成像技术的当前知识.
- 它提供了关于HRWS SAR技术正在进行的发展和未来方向的观点.
- 这篇论文是空间SAR领域的研究人员和工程师的宝贵资源.
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