Best Accuracy Land Use/Land Cover (LULC) Classification to Derive Crop Types Using Multitemporal, Multisensor, and Multi-Polarization SAR Satellite Images
When using microwave remote sensing for land use/land cover (LULC) classifications, there are a wide variety of imaging parameters to choose from, such as wavelength, imaging mode, incidence angle, spatial resolution, and coverage. There is still a need for further study of the combination, comparis...
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doaj-8affd6ee80794537acd7722a1ddcc7c92020-11-24T20:56:01ZengMDPI AGRemote Sensing2072-42922016-08-018868410.3390/rs8080684rs8080684Best Accuracy Land Use/Land Cover (LULC) Classification to Derive Crop Types Using Multitemporal, Multisensor, and Multi-Polarization SAR Satellite ImagesChristoph Hütt0Wolfgang Koppe1Yuxin Miao2Georg Bareth3Institute of Geography, University of Cologne, Albertus-Magnus-Platz, 50923 Cologne, GermanyAirbus Defence and Space, 88039 Friedrichshafen, GermanyDepartment of Plant Nutrition, China Agricultural University, Yuanmingyuan West Road No. 2, 100193 Beijing, ChinaInstitute of Geography, University of Cologne, Albertus-Magnus-Platz, 50923 Cologne, GermanyWhen using microwave remote sensing for land use/land cover (LULC) classifications, there are a wide variety of imaging parameters to choose from, such as wavelength, imaging mode, incidence angle, spatial resolution, and coverage. There is still a need for further study of the combination, comparison, and quantification of the potential of multiple diverse radar images for LULC classifications. Our study site, the Qixing farm in Heilongjiang province, China, is especially suitable to demonstrate this. As in most rice growing regions, there is a high cloud cover during the growing season, making LULC from optical images unreliable. From the study year 2009, we obtained nine TerraSAR-X, two Radarsat-2, one Envisat-ASAR, and an optical FORMOSAT-2 image, which is mainly used for comparison, but also for a combination. To evaluate the potential of the input images and derive LULC with the highest possible precision, two classifiers were used: the well-established Maximum Likelihood classifier, which was optimized to find those input bands, yielding the highest precision, and the random forest classifier. The resulting highly accurate LULC-maps for the whole farm with a spatial resolution as high as 8 m demonstrate the beneficial use of a combination of x- and c-band microwave data, the potential of multitemporal very high resolution multi-polarization TerraSAR-X data, and the profitable integration and comparison of microwave and optical remote sensing images for LULC classifications.http://www.mdpi.com/2072-4292/8/8/684land use classificationpolarimetric SARTerraSAR-xRadarsat-2EnvisatFORMOSAT-2radarmulti-sensorricecrop classification |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Christoph Hütt Wolfgang Koppe Yuxin Miao Georg Bareth |
spellingShingle |
Christoph Hütt Wolfgang Koppe Yuxin Miao Georg Bareth Best Accuracy Land Use/Land Cover (LULC) Classification to Derive Crop Types Using Multitemporal, Multisensor, and Multi-Polarization SAR Satellite Images Remote Sensing land use classification polarimetric SAR TerraSAR-x Radarsat-2 Envisat FORMOSAT-2 radar multi-sensor rice crop classification |
author_facet |
Christoph Hütt Wolfgang Koppe Yuxin Miao Georg Bareth |
author_sort |
Christoph Hütt |
title |
Best Accuracy Land Use/Land Cover (LULC) Classification to Derive Crop Types Using Multitemporal, Multisensor, and Multi-Polarization SAR Satellite Images |
title_short |
Best Accuracy Land Use/Land Cover (LULC) Classification to Derive Crop Types Using Multitemporal, Multisensor, and Multi-Polarization SAR Satellite Images |
title_full |
Best Accuracy Land Use/Land Cover (LULC) Classification to Derive Crop Types Using Multitemporal, Multisensor, and Multi-Polarization SAR Satellite Images |
title_fullStr |
Best Accuracy Land Use/Land Cover (LULC) Classification to Derive Crop Types Using Multitemporal, Multisensor, and Multi-Polarization SAR Satellite Images |
title_full_unstemmed |
Best Accuracy Land Use/Land Cover (LULC) Classification to Derive Crop Types Using Multitemporal, Multisensor, and Multi-Polarization SAR Satellite Images |
title_sort |
best accuracy land use/land cover (lulc) classification to derive crop types using multitemporal, multisensor, and multi-polarization sar satellite images |
publisher |
MDPI AG |
series |
Remote Sensing |
issn |
2072-4292 |
publishDate |
2016-08-01 |
description |
When using microwave remote sensing for land use/land cover (LULC) classifications, there are a wide variety of imaging parameters to choose from, such as wavelength, imaging mode, incidence angle, spatial resolution, and coverage. There is still a need for further study of the combination, comparison, and quantification of the potential of multiple diverse radar images for LULC classifications. Our study site, the Qixing farm in Heilongjiang province, China, is especially suitable to demonstrate this. As in most rice growing regions, there is a high cloud cover during the growing season, making LULC from optical images unreliable. From the study year 2009, we obtained nine TerraSAR-X, two Radarsat-2, one Envisat-ASAR, and an optical FORMOSAT-2 image, which is mainly used for comparison, but also for a combination. To evaluate the potential of the input images and derive LULC with the highest possible precision, two classifiers were used: the well-established Maximum Likelihood classifier, which was optimized to find those input bands, yielding the highest precision, and the random forest classifier. The resulting highly accurate LULC-maps for the whole farm with a spatial resolution as high as 8 m demonstrate the beneficial use of a combination of x- and c-band microwave data, the potential of multitemporal very high resolution multi-polarization TerraSAR-X data, and the profitable integration and comparison of microwave and optical remote sensing images for LULC classifications. |
topic |
land use classification polarimetric SAR TerraSAR-x Radarsat-2 Envisat FORMOSAT-2 radar multi-sensor rice crop classification |
url |
http://www.mdpi.com/2072-4292/8/8/684 |
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