多基线干涉层析SAR提取森林树高方法研究  

Approach for Forest Height Extraction Using Multi-baseline Interferometric Tomographic SAR

作　　者：李文梅[1,2] 陈尔学[1] 李增元[1] 

机构地区：[1]中国林业科学研究院资源信息研究所,北京100091 [2]南京邮电大学地理与生物信息学院,江苏南京210046

出　　处：《林业科学研究》2014年第6期815-821,共7页Forest Research

基　　金：863计划重点项目课题(2011AA120402);国家973计划项目课题(2013CB733404)

摘　　要：应用瑞典Raminstorp研究区Bio SAR 2007 P-波段多基线In SAR数据,研究了基于多基线干涉SAR数据的层析方法,成功提取了可代表森林垂直结构信息的雷达后向散射功率垂直分布信息,并基于该信息提取了树高。应用地面实测样地对树高提取精度进行了检验,结果表明:HH极化树高提取精度最高(R2为0.65,RMSE为2.35 m,相关系数为0.80),HV其次,VV最差。Applying P-band multibaseline InSAR data from BioSAR 2007 campaign in Raminstorp test site in Sweden by Multi-baseline Interferometric Tomographic SAR （MBInTomo SAR） technique to extract forest vertical structure information and estimate forest height from them,and validating the forest height with in situ data.The resuhs showed that the values of R^2 were 0.65,0.55,0.34,the values of RMSE were 2.35 m,3.27 m,5.13 m and the values of correlation coefficient （R） were 0.80,0.74,0.58 among the estimated forest heights using HH,HV and VV MBInTom SAR and Lidar H80,respectively.The conclusion is that the P-band multi-baseline InSAR data can beused for forest vertical structure information extraction and forest height estimation.And traditional forest scattering model and forest height estimation approach may not be suitable for P-band.

关 键 词：多基线干涉层析SAR 森林垂直结构 树高 Capon频谱分析 

分 类 号：S771.8[农业科学—森林工程]