CMRT09

Stilla, Uwe

Bibliographic data

Monograph

Persistent identifier:: 856955019

Author:: Stilla, Uwe

Title:: CMRT09

Sub title:: object extraction for 3D city models, road databases, and traffic monitoring ; concepts, algorithms and evaluation ; Paris, France, September 3 - 4, 2009 ; [joint conference of ISPRS working groups III/4 and III/5]

Scope:: X, 234 Seiten

Year of publication:: 2009

Place of publication:: Lemmer

Publisher of the original:: GITC

Identifier (digital):: 856955019

Illustration:: Illustrationen, Diagramme, Karten

Language:: English

Usage licence:: Attribution 4.0 International (CC BY 4.0)

Publisher of the digital copy:: Technische Informationsbibliothek Hannover

Place of publication of the digital copy:: Hannover

Year of publication of the original:: 2016

Document type:: Monograph

Collection:: Earth sciences

Chapter

Title:: RAY TRACING AND SAR-TOMOGRAPHY FOR 3D ANALYSIS OF MICROWAVE SCATTERING AT MAN-MADE OBJECTS S. Auer, X. Zhu, S. Hinz, R. Bamler

Document type:: Monograph

Structure type:: Chapter

CMRT09: Object Extraction for 3D City Models, Road Databases and Traffic Monitoring - Concepts, Algorithms, and Evaluation future. To not only compare the position of the peaks but also the shape of the reflection profile, the elevations of the simulated point scatterers (see Fig. 12) were fed into the tomographic analysis assuming the same imaging configuration as for the real TerraSAR-X data. As can be seen from Fig. 14, the profile matches very well with the tomographic results from real data (Fig. 13). This example provides a validation of the SAR simulator in the third dimension by comparing to the tomographic analysis result using the TerraSAR-X data. In a further step, it can also be used for validation of tomographic algorithms by simulating the complex valued measurements of a data stack with different baseline distributions. 4 Figure 13: reflectivity function extracted from TerraSAR-X data by SAR-Tomography; intensity peaks estimated at heights of 3 m and 22.5 m Simulated tomographic profite from poor provided by SAR emulation Figure 14: reflectivity function estimated from simulated data extracted from simulator by SAR-Tomography. 4. SUMMARY AND OUTLOOK In this paper, a concept and its prototype implementation for 3D analysis of reflection effects has been presented. 3D model scenes are sampled by ray tracing techniques for providing necessary output data in azimuth, slant-range and elevation. Elevation slices are determined by pixel selection in reflectivity maps in the azimuth-range plane. Comparison of simulated data with real SAR data for a selected urban scene provided promising results. Further studies will have to show whether simulated elevation data may also support the geometrical analysis of more complex 3D urban scenes since visual interpretation of the simulation results is expected to become more complicated due to the increased number of visible building features. Meanwhile, the SAR estimator will be extended for the purpose of validation of tomographic algorithms. 5. REFERENCES Adam, N.; Eineder, M.; Yague-Martinez, N.; Bamler, R., 2008. High Resolution Interferometric Stacking with TerraSAR-X. Proceedings ofIGARSS 08, Boston, USA Auer, S.; Hinz, S.; Bamler, R., 2008. Ray Tracing for Simulating Reflection Phenomena in SAR Images. Proceedings ofIGARSS 08, Boston, USA Balz, T. 2006. Real-Time SAR Simulation of Complex Scenes Using Programmable Graphics Processing Units. Proceedings of the ISPRS TCVII Mid-term Symposium Ferretti, A.; Prati, C.; Rocca, F, 2001. Permanent scatterers in SAR interferometry. IEEE Transactions on Geoscience and Remote Sensing, 39, 8-20 Fomaro, G.; Serafmo, F.; Soldovieri, F., 2003. Three- dimensional focusing with multipass SAR data. IEEE Transactions on Geoscience and Remote Sensing, 41, 507-517 Franceschetti, G.; Iodice, A.; Riccio, D.; Ruello, G., 2003. SAR raw signal simulation for urban structures. IEEE Transactions on Geoscience and Remote Sensing, 41, 1986- 1995 Franceschetti, G.; Migliaccio, M.; Riccio, D., 1995. The SAR simulation: an overview. Geoscience and Remote Sensing Symposium, 1995. IGARSS '95. 'Quantitative Remote Sensing for Science and Applications', International, 3, 2283-2285 vol.3 Glassner, A. S., 2002. An Introduction to Ray Tracing. Morgan Kaufmann, 329 Kampes, B. M., 2006. Radar Interferometry - Persistent Scatterer Technique. Springer, 213 Mametsa, H. J.; Rouas, F.; Berges, A.; Latger, J, 2001. Imaging Radar simulation in realistic environment using shooting and bouncing rays technique. Proceedings of SPIE: 4543. SAR Image Analysis, Modeling and Techniques IV, Toulouse Nannini, M.; Scheiber, R.; Moreira, A., 2008. On the Minimum Number of Tracks for SAR Tomography. Proceedings of IGARSS 08, Boston, USA Reigber, A.; Moreira, A., 2000. First demonstration of airborne SAR tomography using multibaseline L-band data. IEEE Transactions on Geoscience and Remote Sensing, 38, 2142- 2152 Whitted, T., 1980. An improved illumination model for shaded display. Commun. ACM, 23, 343-349 Zhu, X.; Adam, N.; Bamler, R., 2008. First Demonstration of Space-borne High Resolution SAR Tomography in Urban Environment Using TerraSAR-X Data. Proceedings of CEOS SAR Workshop on Calibration and Validation 162

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