Forward-Looking Ultra-Wideband Synthetic Array Imaging

Forward-Looking Ultra-Wideband Synthetic Array Imaging

Wang, J. (TU Delft Microwave Sensing, Signals & Systems)

Yarovoy, Alexander (promotor)

Delft University of Technology

2018-04-05

The expansion of microwave imaging applications in various fields proposes increasingly higher requirements (including spatial resolution, dynamic range, and signal-to-noise ratio) for microwave imaging systems. To achieve high-quality imaging, microwave imaging systems generally exploit spatial-, frequency- and polarization-diversities to probe objects of interest for information extraction. In practice, they are implemented by using array-, wideband/Ultra-wideband (UWB)-and polarimetry-techniques. So properly exploring these techniques is of great importance to design an advanced microwave imaging system. A motivation for the research presented in the thesis is to develop a ground penetrating radar (GPR) system to predict hazards ahead of tunnel boring machines (TBM) during tunnel excavation. In this circumstance, GPR antennas are mounted on the cutter-head of a TBM. With the rotation of the TBM cutter-head, GPR antennas collect electromagnetic (EM) signals over a synthetic circular aperture, which leads to the Radial-scanned Synthetic Aperture Radar (RadSAR). The rotation of the antenna array benefits the formation of the RadSAR but makes it distinct from traditional SAR modalities as well.

microwave imaging
Synthetic Aperture Radar
Full Polarimetry
Rotated antenna array
signal fusion
array design
Ultra-wide band (UWB)
Ground penetrating radar

https://doi.org/10.4233/uuid:a2dacf4c-c10f-4800-81ca-5cf7e55be736

978-94-028-1007-3

Institutional Repository

doctoral thesis

© 2018 J. Wang