Research progress in polarization spectroscopy in the inversion of agronomic parameters of field crops

doi:10.3969/j.issn.1004-1524.20231352

Acta Agriculturae Zhejiangensis ›› 2024, Vol. 36 ›› Issue (11): 2596-2604.DOI: 10.3969/j.issn.1004-1524.20231352

• Biosystems Engineering • Previous Articles Next Articles

Research progress in polarization spectroscopy in the inversion of agronomic parameters of field crops

XU Chenyi¹(), YANG Jiaxin¹, JIN Zhongyu¹, YU Fenghua¹^,²^,^*()

1. College of Information and Electrical Engineering, Shenyang Agricultural University, Shenyang 110866, China
2. Key Laboratory of Intelligent Agricultural Technology of Liaoning Province, Shenyang 110866, China

Received:2023-12-02 Online:2024-11-25 Published:2024-11-27

Abstract

Abstract:

The polarization spectrum information of field crops is utilized through polarization remote sensing technology to partially eliminate the specular reflection in the spectral data of field crops, thereby enhancing the accuracy of crop condition detection using spectral technology. This study reviews key technologies for acquiring and processing polarization spectral remote sensing data of field crops, as well as quantitative inversion of crop growth information. It outlines the fundamental research methods of polarization spectrum technology in crop monitoring, summarizes the characteristics of crop polarization spectra, and analyzes recent developments in the quantitative inversion of agronomic parameters using polarization spectra in field crops. This review aims to present the potential applications of polarization spectrum in field crop research from different perspectives, providing a reference for future studies in polarization spectral detection of field crops.

Key words: polarization, crop, radiative transfer, agricultural remote sensing, spectrum

CLC Number:

XU Chenyi, YANG Jiaxin, JIN Zhongyu, YU Fenghua. Research progress in polarization spectroscopy in the inversion of agronomic parameters of field crops[J]. Acta Agriculturae Zhejiangensis, 2024, 36(11): 2596-2604.

Figures/Tables 2

Fig.1 pBRDF geometric relationship diagram n, Normal vector; s, Direction vector of the light source, representing the incident direction of the light; α, Incident angle,it refers to the angle between the light and the normal line; θi, Incident angle, it refers to the angle between the incident light and the surface normal;θr, Reflection angle; β, Other specific angles or angle differences; dEi, Differential incident energy; dLr, Differential reflection radiance; φi, Azimuth of the incident light in the horizontal plane; φr, The azimuth of the reflected light in the horizontal plane.

Fig.2 Two parts of radiation from the leaf received by the sensor

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Research progress in polarization spectroscopy in the inversion of agronomic parameters of field crops

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