Pine Forest Height Inversion Using Single-Pass X-Band PolInSAR Data
Pine Forest Height Inversion Using Single-Pass X-Band PolInSAR Data
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DOI：
10.1109/tgrs.2007.907602
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发表时间：
2008
影响因子：
8.2
通讯作者：
F. Garestier;P. Dubois-Fernandez;K. Papathanassiou
中科院分区：
文献类型：
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作者：
F. Garestier;P. Dubois-Fernandez;K. Papathanassiou
在X波段利用HH和HV通道的单通道极化合成孔径雷达干涉测量（PolInSAR）数据集对稀疏松林进行了研究。这些第一个初步的结果表明，相关的相位中心提出了一个显着的垂直分离（约6米），允许通过在冠层中的间隙渗透。森林参数反演使用随机体积在地面（RVoG）模型进行评估和适应在这个频率。通过假定较高的平均消光系数（1.6（dB/m）左右），可以较准确地反演森林高度。根据森林高度地面测量，穿透深度估计约为4米。最后，使用sublook分解进行时频分析，以增加极化相位中心的垂直分离。因此，RVoG反演性能得到改善，并穿透深度，这是更好地按照以前的工作（2米的顺序）被发现。本文已经表明，松树林的高度反演是可能的，使用PolInSAR X波段数据和性能更依赖于森林密度比在较低的频率。
A sparse pine forest is investigated at X-band on a single-pass polarimetric synthetic aperture radar interferometry (PolInSAR) data set using HH and HV channels. These first preliminary results show that the associated phase centers present a significant vertical separation (about 6 m) allowed by penetration through gaps in the canopy. Forest parameter inversion using the random volume over ground (RVoG) model is evaluated and adapted at this frequency. The forest height can be retrieved accurately by supposing a high mean extinction coefficient (around 1.6 (dB/m). The penetration depth is estimated to be around 4 m, based on the forest height ground measurements. Finally, a time-frequency analysis using a sublook decomposition is performed to increase the vertical separation of the polarimetric phase centers. As a consequence, RVoG-inversion performance is improved, and a penetration depth that is in better accordance with a previous work (of the order of 2 m) is found. This paper has shown that the height inversion of a pine forest was possible using PolInSAR X-band data and that the performance was more dependent on the forest density than at lower frequencies.