利用加权平均法进行多轨MODIS数据拼图  

A Method Using Adding Priority Average for Mosaic Imagery with MODIS Multitrack Data

作　　者：叶晶[1] 严卫[1] 李志明 

机构地区：[1]解放军理工大学气象学院 [2]空军95871部队

出　　处：《遥感信息》2007年第1期41-43,80,I0005,共5页Remote Sensing Information

摘　　要：极轨卫星多轨拼图是极轨卫星业务应用的一项重要内容。目前业务运行中对图像重叠区域采用直接覆盖法[1]、取最大值或取平均值等方法。本文针对EOS-MODIS定标定位预处理后数据,在经纬度投影变换、重采样和插值等过程基础上,引入加权平均法并将其与直接覆盖法、取最大值、取平均值等方法作了对比实验。结果表明,加权平均法是极轨卫星多轨拼图的有效方法,可应用于EOS-MODIS的多轨拼图业务工作中。The polar orbital satellite multitrack mosaic imagery is an important part in the operational application of polar orbital satellite. Regarding to the existing methods in the operational image mosaic, such as replacing、taking max value and taking average, this paper introduces the method of weighted average, and makes comparison to those three methods on the basis of pre-processing、geographic Lat/Lon projection、sampling and interpolation. It is shown from the comparison that adding priority average is an effective method for polar orbital satellite mosaic imagery and has the capacity for operational application.

关 键 词：极轨卫星多轨拼图 等经纬度投影 加权平均 

分 类 号：P237.3[天文地球—摄影测量与遥感]