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| Citation: | Hu Dingsheng, Qiu Xiaolan, Lei Bin, Xu Feng. Analysis of Crosstalk Impact on the Cloude-decomposition-based Scattering Characteristic[J]. Journal of Radars, 2017, 6(2): 221-228. doi: 10.12000/JR16129
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Analysis of Crosstalk Impact on the Cloude-decomposition-based Scattering Characteristic
doi: 10.12000/JR16129
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Abstract
Crosstalk is not only one of the main error sources in the polarimetric SAR system, but is also an indicator for evaluating calibration performance. In this paper, to determine the impact of crosstalk on land cover classification, we first retrieve the mathematical relation expressions between crosstalk and the Cloude-decomposition-based scattering characteristic. Then, we verify our theoretical conclusions in a semi-physical simulation based on Radarsat-2 polarimetric data for different land covers. Finally, we perform H/a/Wishart classification on the experimental data. From the ratio curve of pixels labeled differently under changing crosstalk, we can determine the crosstalk requirement that will meet the needs of specific applications. -
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References
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Figure 1. H-
$\alpha $ - Figure 2. The Pauli decomposition maps for all datasets
- Figure 3. The changing of scattering center on the H-$\alpha $ plane under different crosstalk, red represents the urban area, yellow represents the agricultural field, blue represents the estuary scene, and green represents the forest area
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Figure 4. The
$H/\alpha /{\rm{Wishart}}$ -
Figure 5. The bias of
$H/\alpha /{\rm{Wishart}}$