| MOD09A1数据产品中缺失条带的插补方法 |
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| 引用本文： | 张鹏,刘勇.MOD09A1数据产品中缺失条带的插补方法[J].遥感技术与应用,2015,30(2):331-336. |
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| 作者姓名： | 张鹏 刘勇 |
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| 作者单位： | (兰州大学资源环境学院,甘肃 兰州730000) |
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| 基金项目： | 国家自然科学基金项目(41271360) |
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| 摘 要： | MODIS地表反射率产品(MOD09A1)是MODIS系列化数据产品中一项重要而基础性的产品。在实际应用中发现该数据产品中仍然继承了原始数据固有的条带缺失问题,且随着数据投影转换,缺失数据在表现为条带状的同时,表现出新的分布特点,以往的插补方法不再适用。利用MOD09A1数据集中描述MODIS数据获取和处理质量的QC数据逐一确定单个缺失像元的准确位置,采用其8邻域内的非缺失像元均值对缺失像元进行插补,在对非条带信息不产生影响的前提下实现了MOD09A1缺失条带的去除,从而确保了该产品数据的质量。选用不同年份不同天数的3景数据进行处理,并将模拟的条带缺失数据采用本文方法处理的结果与真实数据比较,以及将同一条带缺失数据采用不同方法处理的结果比较,结果显示本文方法对于MOD09A1数据条带去除优于以往的方法,并具有普适性和可靠性。
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| 关 键 词： | MODIS MOD09A1 条带缺失 QC 地表反射率 插值 |
An Interpolation Method for Stripe Missing in the Product MOD09A1 |
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| Zhang Peng,Liu Yong.An Interpolation Method for Stripe Missing in the Product MOD09A1[J].Remote Sensing Technology and Application,2015,30(2):331-336. |
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| Authors: | Zhang Peng Liu Yong |
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| Affiliation: | (College of Earth and Enviromental Sciences,Lanzhou University,Lanzhou 730000,China) |
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| Abstract: | MODIS surface reflectance product (MOD09A1) is an important and basic product among series data products of MODIS.However ,it is found that the data still carry on the problem of stripe missing from original data in practical applications.With projection transformation ,the missing data shows new patterns expect the stripe in original data,and the commonly used methodologies is no longer applicable to eliminate the stripe.This paper used QC data that describes the MODIS data acquisition and processing quality within MOD09A1 datasets to locate missing strip,and use smoothing algorithm with the correct pixels in eight neighborhood for interpolation.The data randomly selected to acquire at different times which is processed with the mehod presented in this paper,and all results are good that demonstrates the universality of the method. Different methods used previously and presented in this paper where are used with the same data,and the reswts demonstrate the latter is better.The de\|strping data generated from simulated stripe missing data with the method in this paper is campared with the ture data,and the difference between the two is very small.The result shows that the method for removal of strip missing is effective,and information of non\|stripe missing pixels is not effected. |
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| Keywords: | MODIS MOD09A1 Strip missing QC Surface reflectance Interpolation |
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