合成孔径雷达森林树高和地上生物量估测研究进展

微波遥感具有一定的穿透性,能够与森林内部的散射体发生相互作用,从而获得指示森林垂直方向的参数,被认为在森林垂直结构参数估测方面具有很大的潜力。PolSAR、InSAR、PolInSAR、多基线InSAR以及多基线PolInSAR技术的发展进一步拓展了微波遥感在林业中的应用,为森林垂直结构参数估测提供了可行的解决方案。首先总结了森林垂直结构剖面的层析提取方法;然后重点阐述了林下地形、森林树高以及森林地上生物量的微波遥感估测方法;最后就森林垂直结构参数估测研究中存在的问题及其发展趋势进行了分析。

A Review on Forest Height and Above\|ground Biomass Estimation based on Synthetic Aperture Radar

Microwave remote sensing could interact with forest internal scatterers,because of its penetrability.So it could provide the parameters indicating forest vertical direction and be considered to have the potential to estimate forest vertical structure parameters.With the rapid development of the InSAR,PolInSAR,multi\|baseline InSAR and multi\|baseline PolInSAR technologies,the application in forestry for microwave remote sensing has been extended,provides a feasible solution to forest vertical structure parameters estimation.Firstly,the methods of extracting forest vertical structure profile based on the technology of tomography are summarized.Then,the methods for estimating topography,forest height and forest above\|ground biomass are described.Finally,the existential problems and research trends for forest vertical structure parameters estimation are analyzed.