雾霾对典型地物光谱曲线测量的影响分析

发布时间：2018-06-10 07:02

本文选题：雾霾 + 模拟　；参考：《光谱学与光谱分析》2017年05期

【摘要】：我国雾霾的发生时间成常年化趋势,且在几十年内都可能存在,雾霾对地物光谱曲线测量的影响是不可避免的,而反射率光谱是众多遥感参数反演的基础,因此定量分析雾霾对典型地物光谱曲线测量的影响是丞需解决的问题。本文以简易的雾霾模拟实验室为基础,实际测量了不同雾霾浓度(晴空,浓度分别为35,75,150)下植被、土壤和水泥地的反射率光谱,同时与室外太阳光照下同一样本进行了对比测量和分析。本文首次综合分析不同雾霾浓度对植被、土壤、水泥地等典型地物反射率光谱曲线测量的影响,对定量分析雾霾对遥感监测、应用的影响具有重要意义。主要的研究结论有:草坪、土壤、水泥地等主要地物测量的反射率光谱曲线在晴空时反射率值最高,反射率光谱曲线也最平滑,随雾霾颗粒物浓度的增加,各主要地物的反射率都呈降低趋势,但降幅都不尽相同,降幅没有明显的规律可循;雾霾对各主要地物测量的反射率的影响,在不同波段、不同含水量状况都不尽相同,因此利用统计规律消除雾霾影响有较大困难。雾霾对地物测量的光谱的影响仍需进一步深入研究。
[Abstract]:The occurrence time of smog in China is a perennial trend, and it may exist in several decades. The influence of smog on the spectral curve measurement of ground objects is inevitable, and reflectivity spectrum is the basis of the inversion of many remote sensing parameters. Therefore, quantitative analysis of the influence of smog on the spectral curve measurement of typical ground objects is a problem to be solved. Based on the simple smog simulation laboratory, the reflectance spectra of vegetation, soil and cement land were measured under different smog concentrations (clear sky, concentration of 35,75150). At the same time, the measurement and analysis of the same sample under outdoor sunlight were carried out. In this paper, the influence of different concentration of smog on spectral curve measurement of reflectance of typical ground objects such as vegetation, soil and cement is analyzed for the first time, which is of great significance for quantitative analysis of the influence of haze on remote sensing monitoring and application. The main conclusions are as follows: the reflectance spectral curves measured by lawn, soil, cement and other main objects are the highest in clear sky, and the reflectivity spectral curve is the smoothest, with the increase of the concentration of haze particles. The reflectivity of each major feature showed a decreasing trend, but the decrease was different and there was no obvious regularity to follow. The influence of smog on the reflectivity of each major ground object was different in different bands, and the water content was different in different bands. Therefore, it is difficult to eliminate the influence of smog by statistical law. The influence of smog on the spectral measurement of ground objects still needs further study.
【作者单位】：山东交通学院;上海交通大学;北京林业大学;
【基金】：国家自然科学基金项目(41101312,41230747) 山东省自然科学基金项目(ZR2015DM011) 国家留学基金委项目山东省高等学校优势学科人才团队培育计划(道路交通应急保障技术研究团队)资助
【分类号】：X513

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