关于太空载多态合成孔径雷达的相位同步方法的审查
Qiang Lin1,2, Shiqiang Li1,2, Weidong Yu1,2
1Department of Space Microwave Remote Sensing System, Aerospace Information Research Institute, Chinese Academy of Sciences, Beijing 100190, China.
Sensors (Basel, Switzerland)
|May 25, 2024
概括
多静态合成光圈雷达 (SAR) 系统需要在不同卫星上的发射器和接收器之间精确的相位同步. 本综述涵盖了微波链路和基于数据的同步方法,这对于分布式SAR应用至关重要.
科学领域:
- 遥感 遥感 遥感 遥感
- 信号处理 信号处理
- 雷达系统 雷达系统
背景情况:
- 多静态合成光圈雷达 (SAR) 提供了诸如灵活基线和增强分类等优势.
- 分布式SAR系统由于振荡器频率偏移而面临相位同步方面的挑战.
- 精确的相位同步对于多态SAR性能至关重要.
研究的目的:
- 对多态SAR系统的现有相同步技术进行审查.
- 突出了分布式SAR中相同步的重要性.
- 提供当前和未来同步技术的概述.
主要方法:
- 基于直接微波链接的同步技术的审查.
- 基于数据的估计算法对同步技术的审查.
- 分析频率偏移对SAR信号的影响.
主要成果:
- 阶段同步是多态SAR的一个关键挑战.
- 阶段同步有两种主要方法:直接微波链接和基于数据的算法.
- 这些方法解决了由频率偏移引起的调制相位错误.
结论:
- 阶段同步对于有效的多态SAR操作至关重要.
- 直接链接和基于数据的方法都是实现同步的可行方法.
- 未来的研究应该专注于推进分布式SAR的同步技术.
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