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TEST OF EQUI-SCATTERING MECHANISMS FOR POLINSAR APPLICATIONS WITH TANDEM-X

TEST OF EQUI-SCATTERING MECHANISMS FOR POLINSAR APPLICATIONS WITH TANDEM-X. Armando Marino Juan M. Lopez-Sanchez. Shane R. Cloude. AEL Consultants Cupar Scotland. University Institute of Computing Research (IUII) University of Alicante Spain. Motivations.

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TEST OF EQUI-SCATTERING MECHANISMS FOR POLINSAR APPLICATIONS WITH TANDEM-X

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  1. TEST OF EQUI-SCATTERING MECHANISMS FOR POLINSAR APPLICATIONS WITH TANDEM-X Armando Marino Juan M. Lopez-Sanchez Shane R. Cloude AEL Consultants Cupar Scotland University Institute of Computing Research (IUII) University of Alicante Spain

  2. Motivations • TanDEM-X has a small bistatic angle • We are interested in knowing if this bistaic angle can change significantly the scattering mechanisms. Courtesy of DLR

  3. Outlook • Development of an Equi-Scattering Mechanism (ESM) test for dual polarimetry (suitable for TanDEM-X) • Parameterization and Setting of threshold • Test on TanDEM-X data

  4. Quad vs Dual polarimetry

  5. Quad vs dualpolarimatry Dual pol Scattering vector Covariance matrix Example: lexicographic basis. Scattering vector Covariance matrix Reciprocity & monostatic Quad pol Example: lexicographic basis.

  6. ESM test

  7. Partial target detector: dual-pol Based on a coherence Independent on the overall amplitude : target to detect : perturbed target Total Power Gainfactor Power of target

  8. Change detector: Dual polarimetry

  9. Threshold settings: dual polarimetry

  10. What we want to do: Difference Detector We need to set RedR and T Definition of difference between the SM: Parameterisation in order to relate: Model Eigenvalues

  11. Parameterisation(1) Change of basis Polar coordinates in the new basis SM Partial vector vs SCR

  12. Parameterisation(2) We want to exploit a model to give a more direct interpretation Eigenvalues model with Final relationship

  13. Final Relationship SCR RedR

  14. Test on TanDEM-X data (Kryckland, Sweden)

  15. RGB RX Red: HH Blue: VV Green: HH-VV RGB TX ML 0.9 Detector Samples: 15x15 ENL: 63

  16. RGB RX RGB TX ML 0.98 Detector Samples: 15x15 ENL: 63

  17. 1 Eigenvalues Entropy RX TX 0 90 TX Alpha RX 0

  18. Test on TanDEM-X data (Wallerfing, Germany)

  19. RGB RX RGB TX ML 0.9 Detector Samples: 15x15 ENL: 63

  20. RGB RX RGB TX ML 0.98 Detector Samples: 15x15 ENL: 63

  21. 1 Eigenvalues Entropy RX TX 0 90 TX Alpha RX 0

  22. RGB RX RGB TX ML 0.9 Detector Samples: 15x15 ENL: 63

  23. RGB RX RGB TX ML 0.98 Detector Samples: 15x15 ENL: 63

  24. 1 Eigenvalues Entropy RX TX 0 90 TX Alpha RX 0

  25. Conclusions • A test for ESM was developed for dual polarimetric data • The test is independently of the overall amplitude • A parameterisation was developed in order to set the parameters • The algorithm was tested with TanDEM-X data • Future: To find a link between interferometric coherence and the test

  26. Thank you for your attention.

  27. RGB RX RGB TX ML 0.9 Detector Samples: 15x15 ENL: 63

  28. RGB RX RGB TX ML 0.98 Detector Samples: 15x15 ENL: 63

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