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Processing of  MEMPHIS mmW multi-baseline InSAR data Christophe Magnard, Erich Meier and David Small Remote Sensing Laboratories Department of Geography University of Zurich, Switzerland www.rsl.ch Honolulu, July 30, 2010 Helmut Essen and Thorsten Brehm Fraunhofer-Institut für Hochfrequenzphysik und Radartechnik FHR Wachtberg, Germany www.fhr.fgan.de
Overview ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],1/15
MEMPHIS SAR system (I) ,[object Object],[object Object],[object Object],MEMPHIS 35 GHz antenna 2/15 Platform C-160 Transall Available frequencies 35 and 94 GHz (Ka- and W- bands) Bandwidth 800 MHz (stepped frequency chirp) PRF 1500 Hz Typical velocity 75 m/s Typical near range distance 1.5 km Flying altitude 300 – 1000 a.g.l. Depression angle 20 °  – 35° Typical scene dimension 600 m swath width x 3000 m azimuth length
MEMPHIS SAR system (II) ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],3/15
Data focusing ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],Ka-band SAR image (resolution 0.2 m) 4/15 range azimuth
Multi-baseline processing (I) ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],1  H. Essen, T. Brehm, S. Boehmsdorff, U. Stilla, “Multibaseline Interferometric SAR at Millimeterwaves, Test of an Algorithm on Real Data and a Synthetic Scene”,  Proceedings of SPIE , vol. 6746, Sept 2007. 2  C. Magnard, E. Meier, M. Rüegg, T. Brehm, H. Essen, “High Resolution Millimeter Wave SAR Interferometry”,  Proceedings of the IEEE International Geoscience and Remote Sensing Symposium IGARSS , pp. 5061 – 5064, Barcelona, July 2007. 5/15
Multi-baseline processing (II) ,[object Object],[object Object],[object Object],[object Object],[object Object],1  P. Lombardo, F. Lombardini, “Multi-baseline SAR Interferometry for Terrain Slope Adaptivity”,  IEEE Proc. Nat. Radar Conf. 1997 , pp. 196-201, New York, May 1997. 2  C.W. Chen, “Statistical-Cost Network-Flow Approaches to Two-Dimensional Phase Unwrapping for Radar Interferometry”,  PhD Dissertation , Department of Electrical Engineering, Stanford University, 2001. 6/15
Phase to digital surface model conversion ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],1  P. Rosen, S. Hensley, I. Joughin, F. Li, S. Madsen, E. Rodriguez, R. Goldstein, “Synthetic Apertur Radar Interferometry”,  Proceedings of the IEEE , vol. 88, no. 3, pp. 333-381, March 2000. 2  D. Small, C. Werner, D. Nüesch, “Baseline modelling for ERS-1 SAR interferometry”,  Proceedings of the IEEE International Geoscience and Remote Sensing Symposium IGARSS , vol. 3, pp. 1204-1206, Tokyo, August 1993. 7/15
Correction of azimuth phase undulations (I) ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],1  P. Prats, J.J. Mallorqui, “Estimation of azimuth phase undulations with multisquint processing in airborne interferometric SAR images”,  IEEE Transactions on Geoscience and Remote Sensing , vol. 41, no. 6, pp. 1530-1533, 2003. 2  P. Prats, A. Reigber, J.J. Mallorqui, “Interpolation-Free Coregistration and Phase-Correction of Airborne SAR Interferograms”,  IEEE Geoscience and Remote Sensing Letters , vol. 1, no. 3, pp. 188 - 191, 07/2004. 8/15
Correction of azimuth phase undulations (II) ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],9/15
Correction of azimuth phase undulations (III) Interferogram without phase correction Interferogram with phase correction 10/15 range azimuth range azimuth +   +   0 -   -  
Experimental results ,[object Object],[object Object],Aerial imagery  ©  swisstopo 11/15
Experimental results 12/15 1'239'830 1'238'030 2'703'980 2'704'650 590 m 520 m
Experimental results 13/15 1'239'830 1'238'030 2'703'980 2'704'650 +5 m -5 m 0 m +5 m -5 m 0 m
Experimental results ,[object Object],[object Object],[object Object],[object Object],[object Object],14/15
Discussion ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],15/15
Thank You!

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FR2.L09 - PROCESSING OF MEMPHIS MILLIMETER WAVE MULTI-BASELINE INSAR DATA

  • 1. Processing of MEMPHIS mmW multi-baseline InSAR data Christophe Magnard, Erich Meier and David Small Remote Sensing Laboratories Department of Geography University of Zurich, Switzerland www.rsl.ch Honolulu, July 30, 2010 Helmut Essen and Thorsten Brehm Fraunhofer-Institut für Hochfrequenzphysik und Radartechnik FHR Wachtberg, Germany www.fhr.fgan.de
  • 2.
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  • 11. Correction of azimuth phase undulations (III) Interferogram without phase correction Interferogram with phase correction 10/15 range azimuth range azimuth +  +  0 -  - 
  • 12.
  • 13. Experimental results 12/15 1'239'830 1'238'030 2'703'980 2'704'650 590 m 520 m
  • 14. Experimental results 13/15 1'239'830 1'238'030 2'703'980 2'704'650 +5 m -5 m 0 m +5 m -5 m 0 m
  • 15.
  • 16.