MORRISON_IGARSS2011_TDR.ppt

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MORRISON_IGARSS2011_TDR.ppt

  1. 1. Tomographic Profiling (TP) IGARSS 2011 Vancouver A Scheme for Vertical Backscatter Profiling of Biogeophysical Targets at Constant Incidence Angles Keith Morrison 1 & John Bennett 2 1 Department of Informatics & Systems Engineering, Cranfield University, Shrivenham, UK [email_address] 2 Department of Electronic & Electrical Engineering, Sheffield University, Sheffield S1 3JD, UK
  2. 2. Tomographic Profiling IGARSS 2011 Vancouver Vertical backscatter profiles through biophysical and geophysical target volumes: - snow - ice - vegetation - forestry From a single pass, it provides: - retrieval of a set of images at different incidence angles - the incidence angle is constant at every point within an image PRESENTATION - Description of technique - Theory - Experimental examples
  3. 3. IGARSS 2011 Vancouver
  4. 4. IGARSS 2011 Vancouver
  5. 5. IGARSS 2011 Vancouver
  6. 6. IGARSS 2011 Vancouver xxxxxxx
  7. 7. IGARSS 2011 Vancouver xxxxxxx
  8. 8. IGARSS 2011 Vancouver xxxxxxx
  9. 9. IGARSS 2011 Vancouver xxxxxxx
  10. 10. IGARSS 2011 Vancouver r 1 r n Image region p d L D dx i i L - D dx P z
  11. 11. IGARSS 2011 Vancouver V s H s
  12. 12. IGARSS 2011 Vancouver i R θ syn r_res = c 2B x_res = Θ syn R = λ R 2 D cos i
  13. 13. IGARSS 2011 Vancouver V s i r_res V x_res V V s = r_res V + x_res V H s
  14. 14. IGARSS 2011 Vancouver V s nadir r_res V x_res V
  15. 15. IGARSS 2011 Vancouver V s r_res V x_res V H s i
  16. 16. IGARSS 2011 Vancouver Across-Track Resolution
  17. 17. IGARSS 2011 Vancouver V t = { R.(1-cos Ф ½ ) + r_res.cos Ф ½ ) }.cos i = Ф .R V t F Ф
  18. 18. IGARSS 2011 Vancouver TP Resolution with Incidence Angle: Airborne F-SAR X-band (9.6GHz, B =800MHz) L-Band (1.33GHz, B =150MHz) H=3000m D =300m Ф = 5º V = argmax { V s (p) , V t (p) } F = 260m
  19. 19. IGARSS 2011 Vancouver UAV L-band (1.33GHz,B=150MHz) H=300m D =100m Ф = 4º TP Resolution with Incidence Angle: UAV F = 20m
  20. 20. IGARSS 2011 Vancouver TP Resolution with Incidence Angle: UAV UAV X-band (9.6GHz,B=800MHz) H=300m D =100m Ф = 4º F = 20m
  21. 21. Experimental TP Application: Ground-Based <ul><li>GB-SAR System </li></ul><ul><ul><li>Forestry </li></ul></ul><ul><ul><li>Snowpack </li></ul></ul>IGARSS 2011 Vancouver
  22. 22. TP Imaging: Forest Canopy IGARSS 2011 Vancouver
  23. 23. IGARSS 2011 Vancouver
  24. 24. IGARSS 2011 Vancouver
  25. 25. IGARSS 2011 Vancouver HH VV VH 0 20 40 60
  26. 26. TP Imaging: Snowpack IGARSS 2011 Vancouver
  27. 27. IGARSS 2011 Vancouver 42cm X-Band TP Image
  28. 28. TP Imaging: Laboratory IGARSS 2011 Vancouver
  29. 29. IGARSS 2011 Vancouver Ku-band (17GHz, B =4GHz) H=2m, D =0.10m, Ф = 10º
  30. 30. Summary IGARSS 2011 Vancouver <ul><li>New Imaging Scheme: Tomographic Profiling (TP) </li></ul><ul><ul><li>Provides vertical backscatter profiles through biophysical and geophysical target volumes: </li></ul></ul><ul><li>- snow </li></ul><ul><li>- ice </li></ul><ul><li>- vegetation </li></ul><ul><li>- forestry </li></ul><ul><ul><li>From a single pass, it provides: </li></ul></ul><ul><li>- retrieval of a set of images at different incidence angles </li></ul><ul><li>- the incidence angle is constant at every point within an image </li></ul><ul><ul><li>Provided experimental results from ground-based field and laboratory measurements </li></ul></ul><ul><ul><li>Future work to see airborne demonstration </li></ul></ul>
  31. 31. TP Imaging: Resolution IGARSS 2011 Vancouver C-band (5GHz,B=1.75GHz) H=2-9m, D =0.2m, Ф = 30º

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