Mechanisms and system design of satellite interferometric Synthetic Aperture Radar altimeter
Mechanisms and system design of satellite interferometric Synthetic Aperture Radar altimeter
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DOI：
10.1109/iita-grs.2010.5603760
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发表时间：
2010-10
期刊：
影响因子：
--
通讯作者：
Xu Xi-yu;Liu He-guang;Yang Shuang-bao
中科院分区：
文献类型：
--
作者：
Xu Xi-yu;Liu He-guang;Yang Shuang-bao
星载雷达高度计在微波遥感中发挥着重要作用，但其分辨率低的缺点制约了其性能和在非海面上的应用。合成孔径技术可以提高高度计的沿航迹分辨率，而干涉测量技术可以提高高度计的跨航迹分辨率。虽然这两种技术在侧视雷达中已经得到了很好的应用，但对天底视雷达的相关研究还很不够。综述了合成孔径高度计和干涉式高度计的发展背景。然后分析了干涉合成孔径高度计（INSAA）的工作原理，设计了一组典型的INSAA系统参数，重点研究了相位包络问题和基线长度问题。
Satellite radar altimeter plays an important role in microwave remote sensing, but its performance and applications on non-ocean surfaces are constrained by its poor resolution. The along-track resolution of altimeters can be improved by the synthetic aperture technology, while the cross-track resolution can be improved by the interferometric technology. Although these two technologies are well-established in side-looking radars, relevant studies on nadir-looking radar are rather inadequate. This paper reviewed the backgrounds of the synthetic aperture altimeter and interferometric altimeter. Then the mechanisms of the INterferometric Synthetic Aperture Altimeter (INSAA) are analyzed, and a set of typical INSAA system parameters are designed, especially on the phase-wrapping problem and baseline-length issue.