基于环境一号卫星的气溶胶光学厚度反演技术研究  

Inversion of AOD Based on HJ-1 Satellite Data

作　　者：喻义勇[1] 陆晓波[1] 朱玉霞 

机构地区：[1]南京市环境监测中心站,江苏南京210013 [2]中科宇图天下科技有限公司,北京100101 [3]中科宇图(北京)资源环境科学研究院,北京100101

出　　处：《环境监测管理与技术》2015年第4期30-34,共5页The Administration and Technique of Environmental Monitoring

基　　金："十二五"国家科技支撑计划重大专项基金资助项目(2011BAK21B03);江苏省科技支撑计划"绿色青奥南京区域大气污染监控预警及应急关键技术应用性研究"基金资助项目(BE2012771)

摘　　要：基于环境一号卫星（HJ-1）遥感观测数据,采用改进的暗目标算法和深蓝算法分别对暗像元、亮像元地表的气溶胶光学厚度（AOD）进行反演,并将其结果与MOD04产品对比。结果表明：二者反演的AOD空间变化特征较一致,相关系数达0.874,HJ-1星反演结果有更高的空间分辨率。当AOD值〈0.2时,HJ-1星反演结果可靠性较低;当AOD值在0.2-0.8之间时,HJ-1星CCD相机反演气溶胶的结果与MOD04产品最相近,二者相对误差〈10%;当AOD值在0.8-1.5之间时,HJ-1星反演结果相对MOD04产品显著偏高;当AOD值〉1.5时,HJ-1星反演结果相对MOD04产品偏低。Based on the data of HJ-1 satellite,aerosol optical depth（ AOD） over dark pixel and light pixel land surfaces was inversed by dark dense vegetation（ DDV） method and deep blue algorithm（ DBA）,and was compared against MOD04. The results showed that the spatial variation of AOD from HJ-1 inversion and MOD04 was more consistent,the correlation coefficient reached 0. 874,the results of HJ-1 inversion has higher spatial resolution. When the AOD value was less than 0. 2,the reliability of HJ-1 inversion was low. When the AOD value was between 0. 2 and 0. 8,HJ-1 CCD camera aerosol retrieval results showed the most similar to that with MOD04,the relative error of the two was less than 10%. While the AOD value was between 0. 8 and 1. 5,HJ-1inversion results showed significantly higher than MOD04. When the AOD value was higher than 1. 5,HJ-1 inversion results were lower than that of MOD04.

关 键 词：卫星遥感 气溶胶光学厚度 暗像元算法 深蓝算法 

分 类 号：TP79[自动化与计算机技术—检测技术与自动化装置] P407.4[自动化与计算机技术—控制科学与工程]