Assessment of georeferencing methods on MODIS Terra/Aqua and VIIRS NPP satellite images in Vietnam
| Autor: | Dominique Laffly, Pham Van Ha, Astrid Jourdan, Pascal Klein, Bui Quang Hung, Nguyen Thi Nhat Thanh |
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| Rok vydání: | 2018 |
| Předmět: |
Visible Infrared Imaging Radiometer Suite
010504 meteorology & atmospheric sciences 0211 other engineering and technologies Satellite broadcasting 02 engineering and technology 01 natural sciences AERONET Georeference Environmental science Satellite Moderate-resolution imaging spectroradiometer 021101 geological & geomatics engineering 0105 earth and related environmental sciences Remote sensing |
| Zdroj: | KSE |
| Popis: | In this study, several georeferencing methods such as Polynomial, Thin Plate Spline (TPS) and geolocation transformations are applied on satellite images over Vietnam areas from Moderate Resolution Imaging Spectroradiometer (MODIS) sensor aboard Terra/Aqua satellites and Visible Infrared Imaging Radiometer Suite (VIIRS) sensor aboard the Suomi National Polar-orbiting Partnership (NPP) satellite. In comparison with global administrative areas data, the georeferenced images of TPS function have a better fitting than Polynomial function. In addition, the experimental results highlighted the effect of georeferencing methods on satellite aerosol optical depth (AOD) data in which TPS function produce a higher quality than Polynomial function on both MODIS Terra/Aqua and VIIRS AOD images. Validation results indicated strong correlation between AERONET AOD and TPS georeferenced images (R2 = 0.739, 0.537 and 0.596 for MODIS Terra, MODIS Aqua and VIIRS AOD, respectively) meanwhile these correlations of Polynomial are lower (R2 = 0.596, 0.443 and 0.475 for MODIS Terra, MODIS Aqua and VIIRS AOD, respectively). The correlations between MODIS AOD and VIIRS AOD images are also affected by georeferencing methods. The average of these correlations on TPS georeferenced images is 0.72 meanwhile mean correlation of Polynomial is 0.51. This study focused on the assessment of georeferencing methods and highlighted the effect of these methods on the quality and correlation of satellite AOD images. |
| Databáze: | OpenAIRE |
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