Abstract
The PolSAR calibration ensures that the relationship between the SAR observations and the target characteristics on the ground are consistent and resembles the theoretical estimation which in turn improves the overall data quality. Essentially, calibration prevents the propagation of uncertainty into further analysis to characterise the target. In this study, the UAVSAR L-Band data of Rosamond dry lake bed has been calibrated. The calibration of amplitude and phase are carried out with the help of the corner reflector array present in the Rosamond site. The dataset is further calibrated for the crosstalk and channel imbalance using the Quegan’s distortion model. Since the crosstalk distortion model requires an accurate estimation of the covariance matrix, the optimal kernel size for the its computation is selected based on the distortion model behaviour with varying window sizes. Furthermore, the effectiveness of the calibration process has been studied using polarimetric signatures and other statistical measures.
Original language | English |
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Title of host publication | XXIV ISPRS Congress, Commission I 2020 |
Editors | N. Paparoditis, C. Mallet, F. Lafarge, S. Hinz, R. Feitosa, M. Weinmann, B. Jutzi |
Place of Publication | Nice |
Publisher | International Society for Photogrammetry and Remote Sensing (ISPRS) |
Pages | 369-374 |
Number of pages | 6 |
DOIs | |
Publication status | Published - 3 Aug 2020 |
Event | XXIVth ISPRS Congress 2020 - Virtual Event, Nice, France Duration: 4 Jul 2020 → 10 Jul 2020 Conference number: 24 http://www.isprs2020-nice.com |
Publication series
Name | ISPRS Annals of the Photogrammetry, Remote Sensing and Spatial Information Sciences |
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Publisher | Copernicus |
Volume | V-1-2020 |
ISSN (Print) | 2194-9042 |
Conference
Conference | XXIVth ISPRS Congress 2020 |
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Abbreviated title | ISPRS 2020 |
Country/Territory | France |
City | Nice |
Period | 4/07/20 → 10/07/20 |
Internet address |