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当前位置: 首页 > 文章 > 基于全极化Radarsat-2数据的苹果园平均树高估算模型 森林工程 2017,33 (2) 45-49+55
Position: Home > Articles > Average Tree Height Estimation Model of Apple Orchard Based on Fully Polarized Radarsat-2 Data Forest Engineering 2017,33 (2) 45-49+55

基于全极化Radarsat-2数据的苹果园平均树高估算模型

作  者：
贾永倩;王振锡;瞿余红;丁雅;李擎
单  位：
新疆农业大学
关键词：
Radarsat-2;苹果;树高
摘  要：
以新疆阿克苏地区红旗坡农场"冰糖心"苹果为研究对象,采用全极化Radarsat-2数据和实测果园的郁闭度,计算出植被实际雷达后向散射系数,并分别分析HH、VV和CROSS极化雷达后向散射系数和实际雷达后向散射系数与树高的相关关系,构建水云模型、指数和二次项模型反演苹果园的树高。反演结果表明:水云模型的最佳拟合模型为HH极化方式,R~2为0.116 8,实际雷达后向散射系数所建立的指数模型、二次项模型以VV极化的效果最好,R~2分别为0.811 3和0.795 4。
译  名：
Average Tree Height Estimation Model of Apple Orchard Based on Fully Polarized Radarsat-2 Data
作  者：
Jia Yongqian;Wang Zhenxi;Qu Yuhong;Ding Ya;Li Qing;College of Forestry and Horticulture,Xinjiang Agricultural University;Key Laboratory of Forestry Ecology and Industry Technology in Arid Region,Education Department of Xinjiang;
关键词：
radarsat-2;;apple;;tree height
摘  要：
The apple species with rock candy heat of Hongqi Po farm in Xinjiang Aksu region was taken as the research object in this study. The actual radar backscatter coefficients of the vegetation were calculated based on the Radarsat-2 data of all polarizations and the canopy density of the orchard. The HH,VV,CROSS polarimetric radar backscatter coefficients and the correlation relationships between actual radar backscatter coefficient and tree height were analyzed. The water cloud model,index and quadratic term model were established to predict the tree height of apple orchard. The results showed that the best fitting model of water cloud was HH polarization mode,with R~2 of 0. 116 8. The exponential model established by actual radar backscatter coefficient and the quadratic model with VV polarization were of the best effect,with R~2 of 0. 811 3 and 0. 795 4,respectively.

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