Inversion of Solar-Induced Chlorophyll Fluorescence Using Polarization Measurements of Vegetation
-
Published:2021-05-01
Issue:5
Volume:87
Page:331-338
-
ISSN:0099-1112
-
Container-title:Photogrammetric Engineering & Remote Sensing
-
language:en
-
Short-container-title:photogramm eng remote sensing
Author:
Yao Haiyan,Li Ziying,Han Yang,Niu Haofang,Hao Tianyi,Zhou Yuyu
Abstract
In vegetation remote sensing, the apparent radiation of the vegetation canopy is often combined with three components derived from different parts of vegetation that have different production mechanisms and optical properties: volume scattering Lvol, polarized light Lpol,
and chlorophyll fluorescence ChlF. The chlorophyll fluorescence plays a very important role in vegetation remote sensing, and the polarization information in vegetation remote sensing has become an effective way to characterize the physical characteristics of vegetation. This study analyzes
the difference between these three types of radiation flux and utilizes polarization radiation to separate them from the apparent radiation of the vegetation canopy. Specifically, solar-induced chlorophyll fluorescence is extracted from vegetation canopy radiation data using standard Fraunhofer-line
discrimination. The results show that polarization measurements can quantitatively separate Lvol, Lpol, and ChlF and extract the solar-induced chlorophyll fluorescence. This study improves our understanding of the light-scattering properties of vegetation canopies and
provides insights for developing building models and research algorithms.
Publisher
American Society for Photogrammetry and Remote Sensing
Subject
Computers in Earth Sciences