Three-dimensional Radar imaging of distributed media

16 febbraio 2017
16 febbraio 2017

H. 2:30 pm
Location: Room Garda, Polo Scientifico e Tecnologico "Fabio Ferrari", edificio Povo 1, Povo (Trento)

  • Stefano Tebaldini, Politecnico di Milano

Abstract:

Aperture Radar (SAR) Tomography (TomoSAR) is a microwave imaging technology to recover the 3D structure of the illuminated scene by flying a Radar sensor along multiple trajectories. At microwave regime, electromagnetic waves are capable of penetrating into natural media that are non-transparent at optical frequencies, for example vegetation, snow, ice, and sand. This feature makes TomoSAR sensitive to the vertical structure of those media, hence providing a substantial advantage over optical sensors.
The downside is that TomoSAR signal processing involves a number of challenging aspects as compared to conventional 2D SAR focusing, such as: 3D migration, focusing in the presence of propagation velocity variations, sub-wavelength data-based retrieval of platform position.
The aim of this talk is to present different aspects relative to tomographic SAR imaging and its applications, such as:

  • Basic imaging principles
  • Advanced signal processing
  • Polarimetry & Tomography
  • Added value for forestry, snow-pack and glacier remote sensing
  • Possibilities for spaceborne tomography

Stefano Tebaldini, Ph.D., received the master degree in Telecommunication Engineering and the Ph.D. degree from Politecnico di Milano in 2005 and 2009, respectively. Since 2005, he has been with the Digital Signal Processing Research Group at Politecnico di Milano. He has held the position of permanent researcher at the Dipartimento di Elettronica, Informazione e Bioingegneria at Politecnico di Milano since 2011. He currently teaches the course “Signals and Systems for Remote Sensing” at Politecnico di Milano.
His activities in the field of Radar and SAR processing include the following topics: 2D and 3D SAR imaging; Spaceborne and airborne SAR processing; Polarimetric SAR Tomography; Multi-pass SAR Interferometry; SAR system calibration. His experience in tomographic and polarimetric analysis of natural media includes boreal, temperate, and tropical forests, ice sheets, glaciers, snow, and was largely acquired during ESA studies in support of the BIOMASS and SAOCOM-CS missions.
He is the author of several scientific publications on peer-reviewed international journals.
He was invited as lecturer at ESA’s Advanced Course on Radar Polarimetry and ESA’s Advanced Training Course on Land Remote Sensing.

Contact person regarding this talk:
Lorenzo Bruzzone
lorenzo.bruzzone [at] unitn.it