D3.3 - Millimeter Wave Radar Imaging for Non-Destructive Detection of Material Defects
- AMA Conferences 2017
2017-05-30 - 2017-06-01
- Proceedings Sensor 2017
- D3 - Radar Sensors
- I. Ullmann, J. Adametz, D. Oppelt, M. Vossiek - Friedrich-Alexander-University Erlangen-Nuremberg, Erlangen (Germany)
- 467 - 472
This contribution presents a novel method for the detection of material defects by means of millimeter wave radar imaging. Unlike common radar signal processing algorithms, which are usually based on the assumption of free space propagation of the electromagnetic wave, our approach also considers the effects occurring at material discontinuities, namely refraction and the change in phase velocity. Therefore, by means of the developed reconstruction algorithm, we are able to correctly depict the inside of objects made of refractive materials, such as most polymers. The method was experimentally verified by reconstructing a polyethylene object with air inclusions. Here, the proposed algorithm was able to depict the scenario very well.