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Summary of Proposal LAN1301

TitlePSI & TomoSAR stack fusion over Las Vegas
Investigator Balz, Timo - Wuhan University, LIESMARS
Team Member
Dr. Zhang, Lu - Wuhan University, LIESMARS
Prof. Liao, Mingsheng - Wuhan University, LIESMARS
Summary

The data from the proposed test area in Las Vegas will be used to develop and implement methods for the combination of PSI results from different orbits. The combination of results from different orbits allows the separation of the deformation vectors in horizontal and vertical direction, whereas PSI results from a single orbit only show deformations in the line-of-sight direction. The combination of results from different orbits requires a calibration of the results due to the different reference points and different master images. The same is true for the combination of the results from TomoSAR processing.

The visualization of the results and of the deformation is important for the decision making process. Typically, the decisions makers are not experts in SAR and InSAR and they are normal not aware of the concept of line-of-sight deformations. A combined visualization can help here tremendously, not only because the horizontal and vertical deformation vectors can be separated, but also because the results are almost complete and almost shadow-free. This, although seeming to be trivial, can make a big difference in the acceptance of the technology by non-experts.

Las Vegas is an ideal test site, because there is a large data stack already available, because the water vapor content in the atmosphere is comparably low and stable, and because our project partners already worked on the data set, giving us the opportunity to exchange results more easily and to co-develop our algorithms.

The project is funded by the National Natural Science Foundation of China (no. 41174120) and by the 863-Program of China (no. 2011000176145).

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DLR 2004-2016