1. IEEE IGARSS Vancouver, July 27, 2011 TEST OF EQUI-SCATTERING MECHANISMS FOR POLINSAR APPLICATIONS WITH TANDEM-X Armando Marino Juan M. Lopez-Sanchez University Institute of Computing Research (IUII) University of Alicante Spain Shane R. Cloude AEL Consultants Cupar Scotland

2. IEEE IGARSS Vancouver, July 27, 2011 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. IEEE IGARSS Vancouver, July 27, 2011 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. IEEE IGARSS Vancouver, July 27, 2011 Quad vs Dual polarimetry

5. IEEE IGARSS Vancouver, July 27, 2011 Quad vs dual polarimatry Covariance matrix Example: lexicographic basis. Scattering vector Covariance matrix Reciprocity & monostatic Example: lexicographic basis.

6. IEEE IGARSS Vancouver, July 27, 2011 ESM test

7. IEEE IGARSS Vancouver, July 27, 2011 Partial target detector: dual-pol Based on a coherence Independent on the overall amplitude Gain factor Power of target Total Power : target to detect : perturbed target

8. IEEE IGARSS Vancouver, July 27, 2011 Change detector: Dual polarimetry

9. IEEE IGARSS Vancouver, July 27, 2011 Threshold settings: dual polarimetry

10. IEEE IGARSS Vancouver, July 27, 2011 What we want to do: We need to set RedR and T Definition of difference between the SM: Parameterisation in order to relate: Difference Model Detector Eigenvalues

11. IEEE IGARSS Vancouver, July 27, 2011 Parameterisation(1) vs SM Partial vector Change of basis Polar coordinates in the new basis SCR

12. IEEE IGARSS Vancouver, July 27, 2011 Parameterisation(2) We want to exploit a model to give a more direct interpretation Eigenvalues model with Final relationship

13. IEEE IGARSS Vancouver, July 27, 2011 Final Relationship SCRRedR 000 555.58103.54.27 18 19.976.691.57 28 30.712.100.49 SCRRedR

14. IEEE IGARSS Vancouver, July 27, 2011 Test on TanDEM-X data (Kryckland, Sweden)

15. IEEE IGARSS Vancouver, July 27, 2011 Detector Samples: 15x15 ENL: 63 RGB TX ML 0.9 RGB RX Red: HH Blue: VV Green: HH-VV

16. IEEE IGARSS Vancouver, July 27, 2011 Detector Samples: 15x15 ENL: 63 RGB TX ML 0.98 RGB RX

17. IEEE IGARSS Vancouver, July 27, 2011 TX Alpha RX Eigenvalues Entropy RX 0 0 90 1

18. IEEE IGARSS Vancouver, July 27, 2011 Test on TanDEM-X data (Wallerfing, Germany)

19. IEEE IGARSS Vancouver, July 27, 2011 Detector Samples: 15x15 ENL: 63 RGB TX ML 0.9 RGB RX

20. IEEE IGARSS Vancouver, July 27, 2011 Detector Samples: 15x15 ENL: 63 RGB TX ML 0.98 RGB RX

21. IEEE IGARSS Vancouver, July 27, 2011 Alpha RX Eigenvalues Entropy RX TX 0 0 90 1

22. IEEE IGARSS Vancouver, July 27, 2011 Detector Samples: 15x15 ENL: 63 RGB TX ML 0.9 RGB RX

23. IEEE IGARSS Vancouver, July 27, 2011 Detector Samples: 15x15 ENL: 63 RGB TX ML 0.98 RGB RX

24. IEEE IGARSS Vancouver, July 27, 2011 Alpha RX Eigenvalues Entropy RX TX 0 0 90 1

25. IEEE IGARSS Vancouver, July 27, 2011 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. IEEE IGARSS Vancouver, July 27, 2011 Thank you for your attention.

27. IEEE IGARSS Vancouver, July 27, 2011 Detector Samples: 15x15 ENL: 63 RGB TX ML 0.9 RGB RX

28. IEEE IGARSS Vancouver, July 27, 2011 Detector Samples: 15x15 ENL: 63 RGB TX ML 0.98 RGB RX