红外与毫米波学报2018，Vol.37Issue(1)：80-86,7.DOI:10.11972/j.issn.1001-9014.2018.01.015
玉米光谱变分模态分解及其铜铅污染的VMD-CR-ED测度模型
Spectral variational mode decomposition and VMD-CR-ED model on measuring vopper and lead pollution of corn
摘要
Abstract
The monitoring of heavy metal pollution in crops is one important application of hyperspectral remote sensing study.Heavy metal pollution can cause spectral distortion of crop,but the crop spectra of different pollution degrees still have very high similarity in shape,so one of the key problems in monitoring its distortion is how to extract the weak difference information between similar spectra.In this study,a VMD-CR-ED measurement model was established by introducing the variational mode decomposition (VMD) theory into weak change monitoring of spectral information and combining with the continuum removal (CR) and euclidean distance (ED) methods.The model was proved to be superior in distinguishing the different pollution degrees of corn leaves by compared with SA and SCC.At the same time,the correlation between VMD-CR-ED model and eight characteristic sub-bands of corn leaf spectrum was analyzed.Finally,based on the test data,it is proved that the VMD-CR-ED measurement model is feasible and reliable in the monitoring of copper and lead pollution of crops.关键词
光谱分析/变分模态分解/污染监测模型/农作物/铜铅重金属Key words
spectral analysis/Variational Mode Decomposition/pollution monitoring model/crop/copper and lead heavy metal分类
信息技术与安全科学引用本文复制引用
杨可明,孙彤彤,张伟,程龙,王晓峰..玉米光谱变分模态分解及其铜铅污染的VMD-CR-ED测度模型[J].红外与毫米波学报,2018,37(1):80-86,7.基金项目
国家自然科学基金项目(41271436)Supported by the National Natural Science Foundation of China (41271436) （41271436）
