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| Matlab环境下去 MODIS L1B 数据的“蝴蝶结”效应 |
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李 振1, 黄海军2
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1.中国科学院海洋研究所 中国科学院研究生院;2.中国科学院海洋研究所
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| 基金项目:国家海洋局908专项项目 |
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| Using Matlab to Remove the Bowtie Effect of MODIS O1B Data |
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LI Zheng1, HUANG Haijun2
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1.Institute of Oceanology Chiness Academy of Seiences Graduate School of Chinese Academy of Sciences;2.Institute of Oceanology Chiness Academy of Seiences
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| Abstract: |
| The Bowtie effect occurs in MODIS Level 1B data,and is stored in Hierarchical Data Format (HDF)in formal.The Bowtie effect can not be removed before geometry calibration,so that Bowtie effect should be removed before geometry calibration.Modistools,amodule incorporated the ENVI environment in order to process the first level MODIS data,was developed by R&D Scanex,for removing the Bowtie effect.However,the module has two defects:it can be used only to manipulate integer data; and more than 50%data value would b e changed if the Modistools is used to manipolate integer typed MODIS data.We use a non-Ephemeris method to remove the effect,by using the Matlab numerical computing environment. The method has less pixels shifting and value changing problems |
| Key words: The Bowtie effect occurs in MODIS Level 1B data,and is stored in Hierarchical Data Format (HDF)in formal.The Bowtie effect can not be removed before geometry calibration,so that Bowtie effect should be removed before geometry calibration.Modistools,amodul |
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