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大气污染定量遥感方法及其在长江三角洲的应用

Keywords: 大气污染人为气溶胶卫星遥感象元信息分解混浊度散射率

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Abstract:

分析了人为气溶胶的光学特性和卫星遥感象元信息构成的物理机制,并对象元信息概化为土壤、植被、水分等基本信息组分和污染气溶胶信息按一定方式的非线性集合,采用多波段卫星遥感数据,建立象元信息组合联立方程组进行象元信息分解,从TM卫星数据直接定量提取以象元为单元的区域大气人为气溶胶混浊度,实验结果表明,所提取的污染信息精度满足要求,应用该方法对长江三角洲地区1984年和1997年的污染情况进行探测,结果表明该地区污染范围和强度均在快速增长。

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