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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 18, Iss. 25 — Dec. 6, 2010
  • pp: 26399–26408

Terahertz radar cross section measurements

Krzysztof Iwaszczuk, Henning Heiselberg, and Peter Uhd Jepsen  »View Author Affiliations

Optics Express, Vol. 18, Issue 25, pp. 26399-26408 (2010)

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We perform angle- and frequency-resolved radar cross section (RCS) measurements on objects at terahertz frequencies. Our RCS measurements are performed on a scale model aircraft of size 5-10 cm in polar and azimuthal configurations, and correspond closely to RCS measurements with conventional radar on full-size objects. The measurements are performed in a terahertz time-domain system with freely propagating terahertz pulses generated by tilted pulse front excitation of lithium niobate crystals and measured with sub-picosecond time resolution. The application of a time domain system provides ranging information and also allows for identification of scattering points such as weaponry attached to the aircraft. The shapes of the models and positions of reflecting parts are retrieved by the filtered back projection algorithm.

© 2010 OSA

OCIS Codes
(110.6960) Imaging systems : Tomography
(110.6795) Imaging systems : Terahertz imaging

ToC Category:
Imaging Systems

Original Manuscript: October 18, 2010
Revised Manuscript: November 15, 2010
Manuscript Accepted: November 16, 2010
Published: December 1, 2010

Krzysztof Iwaszczuk, Henning Heiselberg, and Peter Uhd Jepsen, "Terahertz radar cross section measurements," Opt. Express 18, 26399-26408 (2010)

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