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Tomographic Profiling (TP)

Tomographic Profiling (TP). 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 k.morrison@cranfield.ac.uk

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Tomographic Profiling (TP)

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  1. Tomographic Profiling (TP) A Scheme for Vertical Backscatter Profiling of Biogeophysical Targets at Constant Incidence Angles Keith Morrison1& John Bennett2 1Department of Informatics & Systems Engineering, Cranfield University, Shrivenham, UK k.morrison@cranfield.ac.uk 2Department of Electronic & Electrical Engineering, Sheffield University, Sheffield S1 3JD, UK IGARSS 2011 Vancouver

  2. Tomographic Profiling 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 IGARSS 2011 Vancouver

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  6. xxxxxxx IGARSS 2011 Vancouver

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  10. L D dx i i z P dx L - D d rn r1 p Image region IGARSS 2011 Vancouver

  11. Vs Hs IGARSS 2011 Vancouver

  12. x_res = Θsyn R = λR 2Dcosi r_res = c 2B i θsyn R IGARSS 2011 Vancouver

  13. Hs i r_resV Vs x_resV Vs = r_resV + x_resV IGARSS 2011 Vancouver

  14. r_resV x_resV nadir Vs IGARSS 2011 Vancouver

  15. i r_resV x_resV Hs Vs IGARSS 2011 Vancouver

  16. Across-Track Resolution IGARSS 2011 Vancouver

  17. Ф Vt F Vt = { R.(1-cosФ½) + r_res.cosФ½) }.cosi = Ф.R IGARSS 2011 Vancouver

  18. TP Resolution with Incidence Angle: Airborne V = argmax {Vs (p) , Vt (p) } F-SAR X-band (9.6GHz, B=800MHz) L-Band (1.33GHz,B=150MHz) H=3000m D=300m Ф=5º F = 260m IGARSS 2011 Vancouver

  19. TP Resolution with Incidence Angle: UAV UAV L-band (1.33GHz,B=150MHz) H=300m D=100m Ф=4º F = 20m IGARSS 2011 Vancouver

  20. TP Resolution with Incidence Angle: UAV UAV X-band (9.6GHz,B=800MHz) H=300m D=100m Ф=4º F = 20m IGARSS 2011 Vancouver

  21. Experimental TP Application: Ground-Based • GB-SAR System • Forestry • Snowpack IGARSS 2011 Vancouver

  22. TP Imaging: Forest Canopy IGARSS 2011 Vancouver

  23. IGARSS 2011 Vancouver

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  25. HH 60 0 20 40 VV VH IGARSS 2011 Vancouver

  26. TP Imaging: Snowpack IGARSS 2011 Vancouver

  27. X-Band TP Image 42cm IGARSS 2011 Vancouver

  28. TP Imaging: Laboratory IGARSS 2011 Vancouver

  29. Ku-band (17GHz,B=4GHz) H=2m, D=0.10m, Ф=10º IGARSS 2011 Vancouver

  30. Summary • New Imaging Scheme: Tomographic Profiling (TP) • Provides 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 • Provided experimental results from ground-based field and laboratory measurements • Future work to see airborne demonstration IGARSS 2011 Vancouver

  31. TP Imaging: Resolution C-band (5GHz,B=1.75GHz) H=2-9m, D=0.2m, Ф=30º IGARSS 2011 Vancouver

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