Monitoring Corn Crop Height and Growth Rate With Interferometric Coherence

IF 4.7 2区地球科学 Q1 ENGINEERING, ELECTRICAL & ELECTRONIC

IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing Pub Date : 2024-11-04 DOI:10.1109/JSTARS.2024.3491427

Mireia Mas;Antoni Broquetas;Xavier Fàbregas;Albert Aguasca;Jordi Llop;Jinglong Liu;Jordi J. Mallorquí Franquet;Arturo Villarroya-Carpio;Juan M. Lopez-Sanchez

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引用次数: 0

Abstract

Future radar Earth observation missions, with reduced revisit times, will offer the capability to obtain valuable data applicable to agriculture and meteorology. They will contribute to a better understanding of some observed changes that exhibit time scales much shorter than present satellite revisit times. In the context of the preparatory studies in support of future radar mission proposals with reduced revisit time, such as the geosynchronous HydroTerra, the HydroSoil facility has been set up for C-band radar continuous monitoring of crops with a time resolution of 10 min and a spatial resolution of 1 m ² . The data obtained for a corn crop observed along the life cycle has been analyzed to model radar backscattering dependence on crop development parameters. In this study, it is particularly noticeable that the interferometric coherence was measured over a 24-h interval, in contrast to previous studies. Coherence has shown a strong sensitivity to plant height and the phenological stage of the crop, which can be exploited to sense crop growth with radar measurements. However, due to the high density and size of the developed corn canopy, the relationship between coherence and crop height is limited to the first corn stages. For this reason, a new parameter named daily growth rate has been defined and found to be well correlated with the radar coherence.

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利用干涉相干监测玉米株高和生长速度

未来的雷达地球观测任务将缩短重访时间，从而有能力获得适用于农业和气象学的宝贵数据。它们将有助于更好地了解一些观测到的变化，这些变化的时间尺度比目前的卫星重访时间短得多。在为支持未来缩短重访时间的雷达飞行任务建议（如地球同步 HydroTerra）而进行的预备性研究方面，已经建立了 HydroSoil 设施，对作物进行 C 波段雷达连续监测，时间分辨率为 10 分钟，空间分辨率为 1 平方米。对所获得的玉米作物生命周期观测数据进行了分析，以模拟雷达后向散射与作物生长参数的关系。在这项研究中，特别值得注意的是，干涉相干性的测量间隔为 24 小时，这与以往的研究不同。相干性对作物的株高和物候期有很强的敏感性，可以利用雷达测量来感知作物的生长情况。然而，由于玉米冠层密度高、面积大，相干性与作物高度之间的关系仅限于玉米的最初阶段。因此，我们定义了一个名为日生长率的新参数，并发现它与雷达相干性有很好的相关性。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing 地学-成像科学与照相技术

CiteScore

9.30

自引率

10.90%

发文量

563

审稿时长

4.7 months

期刊介绍： The IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing addresses the growing field of applications in Earth observations and remote sensing, and also provides a venue for the rapidly expanding special issues that are being sponsored by the IEEE Geosciences and Remote Sensing Society. The journal draws upon the experience of the highly successful “IEEE Transactions on Geoscience and Remote Sensing” and provide a complementary medium for the wide range of topics in applied earth observations. The ‘Applications’ areas encompasses the societal benefit areas of the Global Earth Observations Systems of Systems (GEOSS) program. Through deliberations over two years, ministers from 50 countries agreed to identify nine areas where Earth observation could positively impact the quality of life and health of their respective countries. Some of these are areas not traditionally addressed in the IEEE context. These include biodiversity, health and climate. Yet it is the skill sets of IEEE members, in areas such as observations, communications, computers, signal processing, standards and ocean engineering, that form the technical underpinnings of GEOSS. Thus, the Journal attracts a broad range of interests that serves both present members in new ways and expands the IEEE visibility into new areas.