数字农科院2.0

Agricultural Application Prospect of Fully Polarimetric and Quantification S-Band SAR Subsystem in Chinese High-Resolution Aerial Remote Sensing System

文献类型： 外文期刊

作者： Liu Y.;Wang L.;Zhu S.;Zhou X.;Liu J.;Xie B.

作者机构：

关键词： agricultural application;calibration;fully polarimetric SAR;quantitative

期刊名称： Sensors

ISSN： 1424-8220

年卷期： 2024 年 24 卷 1 期

页码：

收录情况： SCIE（2024版） ; ; EI（2024版）

摘要： The synthetic aperture radar (SAR) is a type of active radar that can obtain polarization scattering information of ground objects, which is an important supplement to optical remote sensing. This paper designs a high-precision quantitative SAR system that combines radiation and polarization calibration processing to achieve a subtle perception of the changes in soil moisture and straw coverage. In Yushu, Jilin, we conducted the first S-band agricultural remote sensing application experiment. The backscattering coefficient was measured under different water content and straw coverage conditions, and the results showed that the backscattering coefficient increased by about 2 dB and 6 dB, respectively. We estimated that the soil water content increased by about 0.01 cm3/cm3, which was consistent with the theoretical analysis. The polarization scattering characteristics also showed significant differences under different straw coverage. The results indicated that S-band quantitative SAR had an excellent response ability to water content and straw coverage, which provided a technical basis for further radar agricultural applications in the future. © 2023 by the authors.

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