广东肇庆地区SIR-C森林雷达后向散射特征分析

Analysis of Forest Radar Backscatter Mechanism for SIR-C Data at Zhaoqing Area of Guangdong Province

森林雷达后向散射特征的研究是森林微波遥感应用的重要前提。本文利用不连续树冠森林微波后向散射模型模拟了肇庆地区松树林的雷达后向散射特征，并与从ＳＩＲ－Ｃ图像提取的雷达后向散射特征进行对比，从而分析和探讨了该区松树的雷达后向散射机制。

It is very important to study forest radar backscattering mechanism for forest microwave remote sensing applications. ln this paper, we use the discontinuous canopy microwave backscattering model in conjunction with the ground truth measurements to model the radar backscatter behavior from pine forests at the Zhaoqing area, Guangdong Province. lt is very well for the model to predict the radar backscatter of pine stand at L-, and C-band, and the contribution from each of the scattering mechanisms to the total backscatter is calculated. The results are used to discuss the effect of the physical properties of the forest components on the radar backscatter. They are also used to show not only the backscatter but also the relative contribution from various scattering mechanisms that will help in the quantitative interpretation of SAR data. So the comparison of the backscatter coefficients from the model prediction and SIR-C data is done, and the radar backscatter mechanism of pine forests is analyzed and discussed.