光学精密工程2025，Vol.33Issue(17)：2734-2743,10.DOI:10.37188/OPE.20253317.2734
沙氏激光雷达植物叶绿素荧光探测与验证
Detection and validation of plant chlorophyll fluorescence employing Scheimpflug lidar
摘要
Abstract
Accurate monitoring of plant chlorophyll content is essential for agricultural management and physiological research.Traditional methods typically require contact measurements,are time-consuming,and cannot readily capture three-dimensional structural information.To address these limitations,a fluo-rescence LiDAR system(SLiDAR)based on the Scheimpflug principle was developed for non-contact,high-precision measurement of chlorophyll fluorescence,enabling simultaneous acquisition of fluorescence spectra and three-dimensional(3D)structure.The SLiDAR employs a continuous-wave 450 nm laser and a tilted CMOS sensor architecture.Normalization of the red-channel fluorescence signal by the blue-chan-nel elastic scattering signal was implemented to suppress environmental interference and enhance signal-to-noise ratio(SNR).Validation against a handheld chlorophyll meter(SPAD-502PLUS)for various leaf samples demonstrated a strong linear correlation(R²>0.98),confirming reliable chlorophyll fluorescence retrieval and millimeter-level spatial resolution at ranges of 5-10 m.The results indicate that the fluores-cence SLiDAR offers high spectral sensitivity and spatial resolution,enabling efficient,non-destructive in-direct monitoring of chlorophyll content via fluorescence measurements.This approach provides an innova-tive technical solution for assessing plant physiological status,with potential for enhanced applicability in agricultural remote sensing through multi-wavelength excitation and algorithmic optimization.关键词
沙氏激光雷达/荧光成像/三维点云/叶绿素荧光Key words
Scheimpflug LiDAR/fluorescence imaging/3D point cloud/chlorophyll fluorescence分类
电子信息工程引用本文复制引用
阚若冉,郑可欣,杨淑清,梅亮..沙氏激光雷达植物叶绿素荧光探测与验证[J].光学精密工程,2025,33(17):2734-2743,10.基金项目
中央高校基本科研业务费资助项目(No.DUT25RC(3)039) （No.DUT25RC(3）
辽宁省"兴辽英才"计划资助项目(No.XLYC2203185) （No.XLYC2203185）
