| Title |
Effect of Concrete Specimen Geometry on Radar Measurement and Signal Processing |
| Authors |
Rhim Hong-Chul ; Son Byung-Oh ; Kim You-Seok |
| Keywords |
Radar ; Electromagnetic wave ; Concrete ; Image ; Frequency Bandwidth |
| Abstract |
Radar is widely used as a method of nondestructive testing of structures. A lot of experimental studies were made to develope radar method. In this study, brief theory about radar and properties of electromagnetic wave travelling inside concrete are introduced which is fundamental to understand radar method. The purposes of this study are to verify effect of concrete specimen geometry on radar measurement and to propose a signal processing method to image delamination and steel bars embedded in concrete. The experimental data were obtained using Inverse Synthetic Aperture Radar (ISAR) with the frequency bandwidth of 2～3.4 GHz and 3.4～5.8 GHz. All data were processed by means of frequency combination. Computer programs used in this study include windowing and Inverse Fourier Transform. |