合成孔径雷达三维成像技术及特点评述

An Overview of Three-Dimensional Imaging Technology and Technical Characteristics of SAR

常规合成孔径雷达只能实现二维高分辨率成像,无法得到景物的高度信息。与其他技术结合的合成孔径雷达可以实现三维高分辨成像,逐渐成为研究热点。介绍了干涉SAR(InSAR)、双/多基地SAR、复杂路径SAR以及阵列SAR等几种不同的SAR三维成像模式,对它们的技术特点以及发展的重点问题进行了分析,可为新体制的合成孔径雷达三维成像技术提供参考。

Conventional synthetic aperture radar （SAR） can realize two-dimensional imaging, but can not gain height information of the scene. SAR combined with other technologies can achieve three dimensional imaging of high resolution and becomes a hotspot gradually. Several types of three dimensional SAR including interferometric SAR （InSAR）, bistatic/muhistatic SAR, complex path SAR and array SAR are introduced. And the technical characteristics and corresponding problems about their development are analyzed, which can provide reference for the new three dimensional imaging technology of SAR.