冬小麦后向散射特性的测量分析与模拟研究  

Measurement Analysis and Simulation of Backscattering Properties of Winter Wheat

作　　者：陈彦[1] 徐春亮[1] 贾明权[1] 芦海平[1] 刘增灿[1] 童玲[1] 

机构地区：[1]电子科技大学自动化工程学院,成都610054

出　　处：《电子科技大学学报》2009年第5期707-711,共5页Journal of University of Electronic Science and Technology of China

基　　金：国家自然科学基金(40871160)

摘　　要：利用L、S、C、X等4波段陆基微波散射计对冬小麦后向散射系数进行了测量,并采集了生物量、叶面积指数和土壤含水量等相关参数。介绍了冬小麦后向散射系数测量方法及相关实验装置,对不同时间、不同种植方向、不同极化状态下获得的数据进行分析比较,重点讨论了生物量、高度以及生长周期对地物后向散射系数的影响。基于水云模型和IEM模型对冬小麦后向散射特性进行模拟,并反演了土壤含水量,反演结果与实测结果相符。The introduction of inversion of soil moisture content, Simulating backscattering coefficients of winter wheat based on Water Cloud and IEM model and methods to measuring backscattering coefficients of winter wheat is proposed. In order to test the inversion result and the measure result, the backscattering coefficients of winter wheat were measured by FM-CW Ground-based Scattermeter at L-band, S-band, C-band, and X-band, the LAI, biomass, soil moisture contents and so on relevant coefficients were gathered, the date on condition that the different time and different wave band and different polarized were compared, the different factors, such as incidence angle, polarization and wave length, that affect backscattering coefficients are discussed. The inversion of soil moisture content is indential the experiment results.

关 键 词：后向散射系数 微波遥感 散射计 土壤含水量 冬小麦 

分 类 号：TP7[自动化与计算机技术—检测技术与自动化装置]