Phenological tracking og agricultural feilds investigated by using dual polarimetry tanDEM-X images
Remote sensing plays a key role in monitoring and assessing environmental changes. Because of its special imaging characteristics such as high-resolution, capabilities to obtain data in all weather conditions and sensitivity to geometrical and dielectric properties of the features, Synthetic Apertur...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Copernicus Publications
2015-04-01
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| Series: | The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences |
| Online Access: | http://www.int-arch-photogramm-remote-sens-spatial-inf-sci.net/XL-7-W3/73/2015/isprsarchives-XL-7-W3-73-2015.pdf |
| Summary: | Remote sensing plays a key role in monitoring and assessing environmental changes. Because of its special imaging characteristics
such as high-resolution, capabilities to obtain data in all weather conditions and sensitivity to geometrical and dielectric properties of
the features, Synthetic Aperture Radar (SAR) technology has become a powerful technique to detect small scale changes related to
earth surface.SAR images contain the information of both phase and intensity in different modes like single, dual and full
polarimetric states which are important in order to extract information about various targets. In this study we investigate
phenological changes in an agricultural region using high-resolution X-band SAR data. The case study is located in Doroud region
of Lorestan province, west of Iran. The purpose is to investigate the ability of copolar and interferometric coherence extracted from
TanDEM-X dual polarimetry (HH/VV) in bistatic StripMap mode for tracking the phenological changes of crops during growing
season. The data include 11 images acquired between 12.06.2012 and 02.11.2012 and 6 images acquired between 30.05.2013 and
04.08.2013 in the CoSSC format. Results show that copolar coherence is almost able to follow phenological changes but
interferometric coherence has a near constant behaviour with fluctuations mainly related to baseline variations. |
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| ISSN: | 1682-1750 2194-9034 |