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太空中散射SAR成像模式设计:从理论到实施

Yufan Song1,2, Hui Bi1,2, Fuxuan Cai1,2

  • 1College of Electronic and Information Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing 211106, China.

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PubMed
概括
此摘要是机器生成的。

稀缺的SAR成像模式通过降低脉冲重复率来增强横幅覆盖率和图像质量,解决现代太空雷达系统的数据挑战.

关键词:
灯束位置的位置.设计模式设计模式稀疏的SAR成像技术使用.合成光圈雷达 (SAR) 是一种合成光圈雷达.

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科学领域:

  • 遥感 遥感 遥感 遥感
  • 信号处理 信号处理

背景情况:

  • 太空中合成孔径雷达 (SAR) 系统在分辨率和覆盖范围之间面临着权衡.
  • 高分辨率宽带成像在数据采集,存储和传输方面存在挑战.
  • 稀疏信号处理为改善SAR系统性能提供了潜在的解决方案.

研究的目的:

  • 系统地引入太空稀疏SAR成像模式的设计方案.
  • 用雷达方程和设计的稀疏模式来分析系统性能.
  • 介绍一种稀疏的SAR成像方法,用于高质量的图像重建.

主要方法:

  • 基于传统模式设计稀疏模式光束位置.
  • 计算系统性能分析的基本参数.
  • 采用基于混合规范规范化的稀疏SAR成像方法.

主要成果:

  • 设计的稀疏模式通过减少脉冲重复率 (PRF) 而无需硬件更改来实现更广泛的覆盖范围.
  • 减少PRF显著降低了系统数据速率.
  • 混合规范规范化有效地解决了近距离模糊信号比率 (AASR) 问题.

结论:

  • 太空中的稀疏SAR成像模式为高分辨率的广地球观测提供了可行的解决方案.
  • 拟议的方法可以实现更广泛的覆盖范围和降低数据速率,同时保持图像质量.
  • 稀少的SAR成像与混合规范规范化克服了传统SAR系统的局限性.