Synthetic Aperture Radar for Earth Observation from a Lunar Base: Performance and Potential Applications
Synthetic Aperture Radar for Earth Observation from a Lunar Base: Performance and Potential Applications
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DOI：
10.1109/taes.2010.5545172
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发表时间：
2010-08
影响因子：
4.4
通讯作者：
A. Moccia;A. Renga
中科院分区：
文献类型：
--
作者：
A. Moccia;A. Renga
从国际上重新对月球探测产生兴趣以及广泛记录的对在高重访频率和全球范围内对地球地壳动态进行超精确测量的需要出发，提出了月基干涉合成孔径雷达的想法。在介绍了合成天线编队模型和对地遥感月基雷达关键技术的基础上，进行了初步的系统设计和性能分析。定量的结果提出了可实现的分辨率和所需的雷达参数。虽然月基观测站需要技术解决办法和预算，这可能使其实现遥遥无期，但与目前计划的星载干涉测量系统相比，它提供的高度测量精度和频率是其他方法无法达到的。
Starting from the reborn international interest in lunar exploration and the widely documented need for hyper-accurate measurements of Earth crustal dynamics, at a high revisit frequency and on a global scale, the idea of a Moon-based interferometric synthetic aperture radar (SAR) is presented. After introducing models to describe synthetic antenna formation and discussing key issues of a Moon-based radar for Earth remote sensing, a preliminary system design and performance analysis are conducted. Quantitative results are presented in terms of achievable resolutions and needed radar parameters. Although the Moon-based observatory requires technical solutions and a budget that likely make its realization distant, a comparison with currently planned spaceborne interferometric systems shows that it offers height measurement accuracies at a level and with a frequency not achievable otherwise.