DocumentCode :
1773117
Title :
Dielectric measurements of stone materials with a wideband microwave sweep
Author :
Eskelinen, Petri ; Pellinen, Terhi ; Martinez, Pablo Olmos
Author_Institution :
Dept. of Electron., Aalto Univ., Espoo, Finland
fYear :
2014
fDate :
16-18 June 2014
Firstpage :
1
Lastpage :
3
Abstract :
Ground penetrating radars (GPR) are increasingly used for the quality assessment of asphalt work on road construction and measurements are needed to focus only on surface layers of the road. Two different aggregate slabs and reference plastic sheet were measured with the vector network analyzer to investigate the depth resolution issues of the classic electromagnetic field reflection problem in the case of chained dielectric layers. We found that tests of stone material are inadequate at 4 GHz sweep width, which equals a GPR pulse of around 300 ps. The widest sweep from 6.5 to 18 GHz, corresponding to about 100 ps pulses in time domain radar, seems to give both repeatable and reliable information and should be used.
Keywords :
dielectric measurement; ground penetrating radar; GPR; asphalt; dielectric layers; electromagnetic field reflection; frequency 4 GHz; frequency 6.5 GHz to 18 GHz; ground penetrating radars; quality assessment; road construction; stone materials dielectric measurements; time domain radar; Asphalt; Dielectric measurement; Dielectrics; Ground penetrating radar; Reflection; Ground peneterating radar; asphalt; dilectric value; permittivity;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Radar Symposium (IRS), 2014 15th International
Conference_Location :
Gdansk
Print_ISBN :
978-617-607-552-3
Type :
conf
DOI :
10.1109/IRS.2014.6869274
Filename :
6869274
Link To Document :
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