Measurements of short-pulse propagation through concrete walls

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The authors recently performed a series of experimental measurements of transient electromagnetic (EM) propagation through two different concrete walls. Several different short-duration pulses were used for the incident radiation, with frequency content from VHF to 20 GHz. Both walls were 30 cm thick, with three internal layers of reinforcing steel bars. For this particular set of data, the incident wave polarization was vertical linear only. Corroborating swept-frequency measurements were made with a vector network analyzer. This paper describes the propagation measurements through the two walls, and the propagation model of a lossy dielectric layer. They also examine the transfer function, ... continued below

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16 p.

Creation Information

Aurand, J.F. December 31, 1995.

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Author

  • Aurand, J.F. Sandia National Labs., Albuquerque, NM (United States). High-Power Electromagnetics Dept.

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  • Sandia National Laboratories
    Publisher Info: Sandia National Labs., Albuquerque, NM (United States)
    Place of Publication: Albuquerque, New Mexico

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Description

The authors recently performed a series of experimental measurements of transient electromagnetic (EM) propagation through two different concrete walls. Several different short-duration pulses were used for the incident radiation, with frequency content from VHF to 20 GHz. Both walls were 30 cm thick, with three internal layers of reinforcing steel bars. For this particular set of data, the incident wave polarization was vertical linear only. Corroborating swept-frequency measurements were made with a vector network analyzer. This paper describes the propagation measurements through the two walls, and the propagation model of a lossy dielectric layer. They also examine the transfer function, dielectric constant, loss tangent, attenuation constant, and time-domain impulse response of these walls. The attenuation increases steadily with frequency, and is a strong function of the moisture content of the concrete. The time-domain pulse attenuation and dispersion are consistent with the lowpass-filtering effect of this attenuation loss vs. frequency. The time domain behavior will be very useful in time-domain radar studies of ground-penetrating radar, free-space layered measurement systems, etc.

Physical Description

16 p.

Notes

OSTI as DE96011862

Source

  • 3. international conference on ultra-wideband, short-pulse electromagnetics, Albuquerque, NM (United States), 27-31 May 1996

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Identifier

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  • Other: DE96011862
  • Report No.: SAND--95-2383C
  • Report No.: CONF-9605185--3
  • Grant Number: AC04-94AL85000
  • DOI: 10.2172/244678 | External Link
  • Office of Scientific & Technical Information Report Number: 244678
  • Archival Resource Key: ark:/67531/metadc664403

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Office of Scientific & Technical Information Technical Reports

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Creation Date

  • December 31, 1995

Added to The UNT Digital Library

  • June 29, 2015, 9:42 p.m.

Description Last Updated

  • April 13, 2016, 2:49 p.m.

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Aurand, J.F. Measurements of short-pulse propagation through concrete walls, report, December 31, 1995; Albuquerque, New Mexico. (digital.library.unt.edu/ark:/67531/metadc664403/: accessed November 23, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.