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quisition over
lysis.
EM over Las
ational algo-
meters. Not
etrical decor-
| the standard
olocalization
he Permanent
In the paper
1 Raw DEMs
>en enhanced
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enhanced co-
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a theoretical
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International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, Volume XXXIX-B7, 2012
XXII ISPRS Congress, 25 August — 01 September 2012, Melbourne, Australia
Figure 8: Three dimensional visualization of the DEM over Las
Vegas for an industrial area experimentally generated using the
NL-InSAR technique.
Figure 9: Master channel amplitude of the high resolution spot-
light acquisition acquired over Las Vegas on the 25th September,
2011.
Figure 10: Radargrammetric control map for the Raw DEM op-
erationally processed. The black area corresponds to the phase
unwrapping error, spanning the 24% of the scene.
construction takes its origin from the side looking geometry of the
radar sensors. Issues like layover and shadow remain unsolved
in the single aspect case. Their effect in the DEM are a height
slope and a wrong geolocation for the layover case and a random
height for the shadow one. The use of ascending and descend-
ing tracks helps to resolve the shadowing effect, while the use
of tomographic techniques could resolve the layover case. Thus,
only the use of multi aspect data or a stack of acquisitions would
help the three dimensional reconstruction. In any case, the urban
Raw DEMS generated by the TanDEM-X mission allow the map-
ping of single buildings with a great amount of details, being then
77
Figure 11: Radargrammetric control map for the Raw DEM ex-
perimentally processed.
useful in all the applications requiring a municipal mapping.
ACKNOWLEDGEMENTS
The TanDEM-X project is partly funded by the German Federal
Ministry for Economics and Technology (Foerderkennzeichen 50
EE 1035). This work is part of the Tomopolis project, founded by
the Deutsches Zentrum fuer Luft und Raumfahrt e.V. Raumfahrt-
Agentur.
REFERENCES
Bamler, R.; Interferometric stereo radargrammetry: absolute
height determination from ERS-ENVISAT interferograms, Geo-
science and Remote Sensing Symposium (IGARSS), 2000 IEEE
International, vol.2, pp.742-745
Breit, H.; Fritz, T.; Balss, U.; Niedermeier, A.; Eineder, M.;
Yague-Martinez, N.; Rossi, C.; Processing of Bistatic TanDEM-
X data, Geoscience and Remote Sensing Symposium (IGARSS),
2010 IEEE International, pp.2640-2643, Honolulu, 25-30 July
2010
Deledalle, C.-A.; Denis, L.; Tupin, E; NL-InSAR: Nonlocal In-
terferogram Estimation, Geoscience and Remote Sensing, IEEE
Transactions on, vol.49, no.4, pp.1441-1452, April 2011
Fritz, T.; Rossi, C.; Yague-Martinez, N.; Rodriguez-Gonzalez F.;
Lachaise, M.; Breit, H.; Interferometric Processing of TanDEM-
X Data, Geoscience and Remote Sensing Symposium (IGARSS),
2011 IEEE International, Vancouver, July 24-29, 2011
Rizzoli, P; Brautigam, B; Krauss, T; Martone, M., Krieger, G.;
Relative Height Error Analysis of TanDEM-X Elevation Data,
ISPRS J. Photogramm. Remote Sens., under review, 2012
Rossi, C.; Fritz, T.; Breit, H.; Eineder, M.; First Urban
TanDEM-X RawDEM Analysis, Joint Urban Remote Sensing
Event (JURSE), pp.65-68, 11-13 April 2011
Rossi, C.; Rodriguez Gonzalez, F.; Fritz, T.; Yague Martinez N.;
Eineder, M.; Calibrated TanDEM-X Raw DEM Generation, IS-
PRS J. Photogramm. Remote Sens., under review, 2012
Vasile, G.; Trouv, E.; Ciuc, M. and Buzuloiu, V.; General
adaptive-neighborhood technique for improving synthetic aper-
ture radar interferometric coherence estimation, J. Opt. Soc. Am.
A 21, 1455-1464, 2004
Yague-Martinez, N.; Eineder, M.; Brcic, R.; Breit, H.; Fritz, T.;
TanDEM-X Mission: SAR Image Coregistration Aspects, Syn-
thetic Aperture Radar (EUSAR), 2010 8th European Conference
on, Aachen, 7-10 June 2010
