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Modulation transfer function analysis of the moderate resolution imaging spectroradiometer (MODIS) on the TERRA satellite.

机译:TERRA卫星上中分辨率成像光谱仪(MODIS)的调制传递函数分析。

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摘要

The Modulation Transfer Function (MTF) is a standard measure of imaging systems performance. This work addresses determination of the MTF for the Moderate Resolution Imaging Spectroradiometer (MODIS) Earth remote sensing system on NASA's TERRA satellite. Reliable characterization of the MODIS MTF requires using as many sources of information as possible for evaluation. In this research a model, pre-launch and on-orbit measurements are used to develop a consistent characterization of the MTF. The on-orbit characterization is implemented using two approaches. The first is cross-track temporal monitoring using data derived from the SpectroRadiometric Calibration Assembly (SRCA). The second is using a two-image approach in which the reference is Landsat-7 Enhanced Thematic Mapper (ETM+) and Advanced Spaceborne Thermal Emission and Reflection Radiometer (ASTER). This characterization of the MTF is used to evaluate the effect on science products, the Normalized Difference Vegetation Index (NDVI) and the Enhanced Vegetation Index (EVI), and includes partial MTF correction (MTFc) as a way to improve the accuracy. This work has produced the following significant results: (1) A model for the pre-launch MODIS MTF. (2) Automatic image registration using the geolocation data. (3) Cross-track on-orbit MTF are comparable to the pre-launch MTF for bands 1, 2, 6 and 29. (4) In-track on-orbit MTF indicate that it is lower for bands 1 and 2 (in most cases), and comparable for bands 6 and 29, in reference to the pre-launch MTF.
机译:调制传递函数(MTF)是成像系统性能的标准度量。这项工作解决了NASA TERRA卫星上中等分辨率成像光谱仪(MODIS)地球遥感系统的MTF的确定问题。 MODIS MTF的可靠表征要求使用尽可能多的信息源进行评估。在这项研究中,模型,发射前和在轨测量被用于开发MTF的一致特征。在轨表征是使用两种方法实现的。第一个是使用从光谱辐射校准组件(SRCA)导出的数据进行跨轨时间监视。第二种是使用双图像方法,其中参考为Landsat-7增强型专题测绘仪(ETM +)和先进的星载热发射和反射辐射计(ASTER)。 MTF的这种特征用于评估对科学产品,归一化差异植被指数(NDVI)和增强植被指数(EVI)的影响,并包括部分MTF校正(MTFc)作为提高准确性的一种方式。这项工作产生了以下重要成果:(1)用于MODIS MTF预启动的模型。 (2)使用地理位置数据自动注册图像。 (3)1、1、2、6和29频段的跨轨在轨MTF与发射前MTF相当。(4)1、1、2频段的轨内在轨MTF表示较低(在(大多数情况下),并与发布前的MTF相比,在第6和第29频段具有可比性。

著录项

  • 作者

    Rojas, Francisco.;

  • 作者单位

    The University of Arizona.;

  • 授予单位 The University of Arizona.;
  • 学科 Engineering Electronics and Electrical.; Remote Sensing.
  • 学位 Ph.D.
  • 年度 2002
  • 页码 156 p.
  • 总页数 156
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 无线电电子学、电信技术;遥感技术;
  • 关键词

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