Title

Terahertz And Millimeter Wave Transmission Of Soils

Keywords

Landmine detection; Millimeter waves; Soils; Terahertz; Transmission

Abstract

Transmission spectra were measured over the range 90-140 GHz and 300-4200 GHz for 20 soil samples that span a number of soil orders that have extensive worldwide distribution. A vector network analyzer equipped with 16 degree horn antennas covered the spectral range 90-140 GHz. Transmission measurements were also taken for some organic materials in the 90-140 GHz range. A Fourier spectrometer equipped with Hg arc lamp, pellicle beamsplitter, and Si bolometer collected transmission spectra over the range 300 to 4200 GHz. Transmittance ranged from 10 -7 to almost 1. In all cases, transmission drops to zero for wavelengths shorter than the characteristic particle size of the sample as a consequence of scattering. In samples of mixed particle size, low transmittance in the 90-140 GHz range was found to be caused by the coarse component. This work is relevant to mine detection using THz and millimeter wave (mmW) radiation.

Publication Date

7-21-2005

Publication Title

Proceedings of SPIE - The International Society for Optical Engineering

Volume

5727

Number of Pages

1-11

Document Type

Article; Proceedings Paper

Personal Identifier

scopus

DOI Link

https://doi.org/10.1117/12.584925

Socpus ID

21844452425 (Scopus)

Source API URL

https://api.elsevier.com/content/abstract/scopus_id/21844452425

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