The feasibility of Ultra Wide Band (UWB) through the wall surveillance system is
studied in this thesis. The transmitter and receiver architectures are discussed and an
experimental set-up is constructed to verify the theory of UWB sensing. The constructed
system has 80 mW peak, 6 uW average transmit power and 500 kHz PRF and a range
resolution better than 1 cm. Using the experimental set-up, two problems are examined.
The first problem is the respiration rate detection problem. It has been shown that the
respiration rate can be accurately estimated and the signs of vital activity can be
determined behind the wall. The second problem studied in this thesis is the through the
wall imaging problem. The imaging system is based on the construction of a synthetic
aperture by sliding the transmit-receive antenna pair along the cross range direction. The
cross range resolution is improved by applying a migration algorithm to the collected
data. It has been shown that imaging of a scene 8 meters in range, behind a wall of 20 cm
thickness is possible with the available power.
| Identifer | oai:union.ndltd.org:METU/oai:etd.lib.metu.edu.tr:http://etd.lib.metu.edu.tr/upload/12609025/index.pdf |
| Date | 01 December 2007 |
| Creators | Kasak, Kerem |
| Contributors | Candan, Cagatay |
| Publisher | METU |
| Source Sets | Middle East Technical Univ. |
| Language | English |
| Detected Language | English |
| Type | M.S. Thesis |
| Format | text/pdf |
| Rights | To liberate the content for public access |
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