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FDTD modelling of a realistic room for through‐the‐wall radar applications
Author(s) -
Chamma Walid A.
Publication year - 2009
Publication title -
international journal of numerical modelling: electronic networks, devices and fields
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.249
H-Index - 30
eISSN - 1099-1204
pISSN - 0894-3370
DOI - 10.1002/jnm.703
Subject(s) - finite difference time domain method , radar , multistatic radar , bistatic radar , computer science , remote sensing , radar imaging , acoustics , geology , optics , telecommunications , physics
Abstract This study describes the use of the finite‐difference time‐domain (FDTD) method to investigate the capabilities and limitations of a ultra wideband (UWB) radar system for detecting a human model target inside a realistic room. A 0.8 ns pulse at a centre frequency of ƒ 0 =1.1 GHz is used. The room is modelled with all its components (water and heating pipes, windows, electrical outlets, brick walls, barred windows, etc.). The radar set‐up is also modelled to simulate a realistic system. The performance of the UWB radar is examined by generating two‐dimensional images of the room interior with the human body model included. This is done by considering monostatic and multistatic radar scenarios where responses are recorded and processed using the time‐domain back‐projection method. Images obtained using the FDTD modelling detected the human body model at the correct location inside the room. As expected, the multistatic radar set‐up provided a cleaner image than that of the monostatic radar set‐up due to greater diversity in aspect angle. Copyright © 2008 Crown in the right of Canada. Published by John Wiley & Sons, Ltd.