Three Dimensional Sar Tomography in Shanghai Using High Resolu- Tion Space-borne Sar Data

In this paper, we will demonstrate three-dimensional tomographic reconstruction of space-borne highresolution SAR data using Shanghai as our test site. The high density of high-rise buildings in Shanghai leads to a rather complicated backscattering regime, which is difficult to handle with conventional interferometric processing. For the tomographic signal reconstruction, we use three different reconstruction methods: Singular Value Decomposition (SVD), Truncated SVD, and Wiener-SVD. We tested all three methods on simulated and real SAR data. In our experiments, we can demonstrate that SVD works only in a few cases. TruncatedSVD and Wiener-SVD deliver better results.