TU1.L10 - ERS-ENVISAT TANDEM CROSS-INTERFEROMETRY FOR MONITORING OF SEA ICE

653 views

Published on

0 Comments
0 Likes
Statistics
Notes
  • Be the first to comment

  • Be the first to like this

No Downloads
Views
Total views
653
On SlideShare
0
From Embeds
0
Number of Embeds
4
Actions
Shares
0
Downloads
10
Comments
0
Likes
0
Embeds 0
No embeds

No notes for slide
  • 21/07/09
  • 21/07/09
  • 21/07/09
  • 21/07/09
  • 21/07/09
  • TU1.L10 - ERS-ENVISAT TANDEM CROSS-INTERFEROMETRY FOR MONITORING OF SEA ICE

    1. 1. ERS-ENVISAT TANDEM CROSS-INTERFEROMETRY FOR MONITORING OF SEA ICE P. Pasquali(1), A. Cantone(1), M. Barbieri(1), and M. Engdahl(2) (1) sarmap s.a., Cascine di Barico, 6989 Purasca, Switzerland (2) ESA ESRIN, , Frascati, Italy
    2. 2. ERS-ASAR Cross-Interferometry (CinSAR) <ul><li>Very large baseline (~2km) to compensate the carrier frequencies shift </li></ul><ul><li>-> Very sensitive to height (2pi ~5m) </li></ul><ul><li>-> Coherence maintained for little slopes </li></ul><ul><li>Short acquisition interval (~30 minutes) </li></ul>
    3. 3. CInSAR processing results over glaciers Glaciers in east Greenland, Mount Gunnbjørn area
    4. 4. Use of existing DEMs over Antarctica Ramp GLAS/ICESat Ellipsoid
    5. 5. Use of existing DEMs over Antarctica Aster GDEM GTOPO-30 Ellipsoid
    6. 6. EET 2 nd campaign coverage over northern latitudes
    7. 7. Baffin area Flattened interferogram ASAR Amplitude
    8. 8. Grounded ice border? North-west passage, Northern Canada January 4 th January 7 th January 10 th
    9. 11. Beaufort area
    10. 12. Coregistering land or ice? ASAR amplitude ERS-2 / ASAR phase
    11. 14. Edges of homogeneous fringe frequency areas
    12. 17. Estimation of the displacement azimuth component ERS-2 / ASAR interferogram “ MAI” (Multi Aperture Interferogram) D. Bechor and H. A. Zebker, 2006, Measuring two-dimensional movements using a single InSAR pair, Geophys. Res. Lett.
    13. 18. Estimation of the displacement azimuth component
    14. 19. “ MAI” (Multi Aperture Interferogram) ERS-2 / ASAR interferogram
    15. 20. First results from EET 3 rd campaign over Antarctica
    16. 21. Conclusions <ul><li>EET CInSAR data have a great potential for monitoring sea ice dynamic </li></ul><ul><li>In case of large displacements, 2D components can be estimated from the data, with updated MAI strategies </li></ul><ul><li>Updated strategies for coregistration shall be exploited </li></ul><ul><li>Long segments processing is of great importance </li></ul>

    ×