Tomosar Executive summary

 Project Title:

Metode pentru Imbunatatirea Masuratorilor Radar cu Apertura Sintetica 4-dimensionale (Enhancing 4-dimensional Synthetic Aperture Radar Measurements )


 Contracting Authority: 

Unitatea Executiva pentru Finantarea Invatamantului Superior, a Cercetarii, Dezvoltarii si Inovarii (UEFISCDI)





 Project Code: 



 Contract Number:





During the past years SAR space missions have grown in practical importance, as ESA Sentinel-1 is preparing to serve the scientific community with open access to data. SAR Interferometry uses coherent waves’ properties for the computation of digital elevation models, but suffers from limitations introduced by the temporal and spatial decorrelation of the surface that lead to the necessity of new methods for earth deformation over large time intervals. In this context we propose to implement a 4D coherent processor for SAR data that consists of two parts: a module for persistent scatterer analysis and an extension to tomography. The processor aims not only at measuring the variation, direction and velocity of the displacements, but also to increase the precision regarding 3D reconstruction. The designed algorithms aim at advanced parameter estimation in order to lower the influence of artifacts. For this reason, we need to establish a theoretic framework in order to evaluate the applicability of tomographic algorithms in multiple scattering cases. Moreover, tomography techniques will also be employed for detection of multiple targets inside the resolution cell. The results will be compared to those obtained by using the more classical methods of PSI. Furthermore, the problem of phase quality will be addressed. The implemented processor will be used to model phase induced errors and compute a quality of the measured phase based on existing interferometric products.

 Executive summary - example

Deformation map for Valencia Harbor

Project Objectives:


1. To develop SAR tomography algorithms and to integrate SAR technology with SAR tomography

2. To develop a tomographic model that estimates the SAR system response

3. To bring contributions to atmospheric efects estimation

4. To integrate Permanent Scatterers Interferometry with SAR tomography

5. To test, validate and demonstrate results