First Demonstration of Agriculture Height Retrieval With PolInSAR Airborne Data
First Demonstration of Agriculture Height Retrieval With PolInSAR Airborne Data
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DOI：
10.1109/lgrs.2011.2165272
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发表时间：
2012-03
影响因子：
4.8
通讯作者：
J. Lopez-Sanchez;I. Hajnsek;J. David;Ballester-Berman
中科院分区：
文献类型：
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作者：
J. Lopez-Sanchez;I. Hajnsek;J. David;Ballester-Berman
德国航空航天中心（DLR）利用实验合成孔径雷达（E-SAR）系统在L波段以干涉重复-通过模式采集的一组三幅四极成像仪图像，与AgriSAR 2006活动同时进行，首次利用机载数据演示了通过基于极化合成孔径雷达干涉测量（PolInSAR）的技术从农作物中反演植被高度。尽管低频率的数据，因此提供了一个弱的响应，从植被体积与地面相比，准确的估计植被高度在字段一级已经获得了冬季油菜和玉米田。同样的程序不产生有效的估计小麦，大麦，甜菜领域由于不匹配的物理模型中采用的反演和特定的作物条件在收购之日。这些结果显示了干涉测量和偏振测量为某些农业监测实践提供的信息的价值。
A set of three quad-pol images acquired at the L-band in interferometric repeat-pass mode by the German Aerospace Center (DLR) with the Experimental SAR (E-SAR) system, in parallel with the AgriSAR2006 campaign, has been used to provide, for the first time with airborne data, a demonstration of the retrieval of vegetation height from agricultural crops by means of polarimetric SAR interferometry (PolInSAR)-based techniques. Despite the low frequency of the data, hence providing a weak response from the vegetation volume in contrast to the ground, accurate estimates of vegetation height at field level have been obtained over winter rape and maize fields. The same procedure does not yield valid estimates for wheat, barley, and sugar beet fields due to a mismatch with the physical model employed in the inversion and to the specific crop condition at the date of acquisition. These results show the value of the information provided by both interferometry and polarimetry for some agriculture monitoring practices.