Synthetic-aperture radar (SAR) systems are widely used for monitoring vegetation and forested environments. Those that offer large-scale coverage, short revisiting times, and an under-foliage wave-penetration capability have been broadly employed to extract information about the forest structure. Similarly, 3D forest structures that serve as important indicators of productivity and biomass levels can be efficiently estimated using the SAR tomography (TomoSAR) processing technique through multibaseline (MB) image acquisition. This article provides an overview of the main developments in forest TomoSAR during the past two decades.

中文翻译：

---

森林 SAR 层析成像：原理和应用

合成孔径雷达 (SAR) 系统广泛用于监测植被和森林环境。那些提供大范围覆盖、短重访时间和树叶下波穿透能力的技术已被广泛用于提取有关森林结构的信息。同样，作为生产力和生物量水平重要指标的 3D 森林结构可以通过多基线 (MB) 图像采集使用 SAR 断层扫描 (TomoSAR) 处理技术进行有效估计。本文概述了过去二十年森林 TomoSAR 的主要发展。