Ultra-wide band antenna designs and numerical system modelling for forward-looking GPR

TÜRK A. S., Aksoy S., Keskin A. K., Senturk M. D., ÇALIŞKAN A., Ozakin M. B.

NEAR SURFACE GEOPHYSICS, cilt.13, sa.3, 2015 (SCI-Expanded) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 13 Sayı: 3
  • Basım Tarihi: 2015
  • Doi Numarası: 10.3997/1873-0604.2015008
  • Dergi Adı: NEAR SURFACE GEOPHYSICS
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Yıldız Teknik Üniversitesi Adresli: Evet

Özet

This paper presents ultra-wide band (UWB) horn feeder and parabolic reflector antenna designs, which are considered highly suitable for forward-looking vehicle-mounted ground-penetrating radar (GPR) systems and time-domain numerical modelling of impulse GPR signal radiation, wave propagation and target scattering. In this context, the partial dielectric-loaded Vivaldi shaped TEM horn (PDVA), TEM horn fed double-ridged horn (PDTEM-RHA) and their compact versions are investigated, designed simulated and measured. An offset parabolic reflector antenna prototype with a compact PDTEM-RHA feeder is proposed to reach hyper-wide band impulse radiation performances from 500 MHz up to 15 GHz for a multi-band forward-looking GPR operation that can provide deep subsurface detection with high-resolution imaging, due to a big advantage of narrowed beam widths. The antenna gain and radiation pattern performances are demonstrated with measurement results.