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Title: Compensation of Dispersion in Sinuous Antennas for Polarimetric Ground Penetrating Radar Applications

Abstract

In order to improve the accuracy of subsurface target classification with ground penetrating radar (GPR) systems, it is desired to transmit and receive ultra-wide band pulses with varying combinations of polarization (a technique referred to as polarimetry). The sinuous antenna exhibits such desirable properties as ultra-wide bandwidth, polarization diversity, and low-profile form factor, making it an excellent candidate for the radiating element of such systems. However, sinuous antennas are dispersive since the active region moves with frequency along the structure, resulting in the distortion of radiated pulses. This distortion may be compensated in signal processing with accurately simulated or measured antenna phase information. However, in a practical GPR, the antenna performance may deviate from that simulated, accurate measurements may be impractical, and/or the dielectric loading of the environment may cause deviations. In such cases, it may be desirable to employ a simple dispersion model based on antenna design parameters which may be optimized in situ. This paper explores the dispersive properties of the sinuous antenna and presents a simple, adjustable, model that may be used to correct dispersed pulses. Here, the dispersion model is successfully applied to both simulated and measured scenarios, thereby enabling the use of sinuous antennas inmore » polarimetric GPR applications.« less

Authors:
ORCiD logo [1]; ORCiD logo [2]
+ Show Author Affiliations
  1. Sandia National Lab. (SNL-NM), Albuquerque, NM (United States); Georgia Inst. of Technology, Atlanta, GA (United States)
  2. Georgia Inst. of Technology, Atlanta, GA (United States)
Publication Date:
Research Org.:
Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1570298
Report Number(s):
SAND-2019-10018J
Journal ID: ISSN 2072-4292; 678810
Grant/Contract Number:  
AC04-94AL85000
Resource Type:
Accepted Manuscript
Journal Name:
Remote Sensing
Additional Journal Information:
Journal Volume: 11; Journal Issue: 16; Journal ID: ISSN 2072-4292
Publisher:
MDPI
Country of Publication:
United States
Language:
English
Subject:
47 OTHER INSTRUMENTATION; antennas; broadband antennas; sinuous antennas; ground penetrating radar; subsurface imaging; landmine; dispersion; polarimetry

Citation Formats

Crocker, Dylan Andrew, and Scott, Jr., Waymond R. Compensation of Dispersion in Sinuous Antennas for Polarimetric Ground Penetrating Radar Applications. United States: N. p., 2019. Web. doi:10.3390/rs11161937.
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Crocker, Dylan Andrew, & Scott, Jr., Waymond R. Compensation of Dispersion in Sinuous Antennas for Polarimetric Ground Penetrating Radar Applications. United States. https://doi.org/10.3390/rs11161937
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Crocker, Dylan Andrew, and Scott, Jr., Waymond R. Mon . "Compensation of Dispersion in Sinuous Antennas for Polarimetric Ground Penetrating Radar Applications". United States. https://doi.org/10.3390/rs11161937. https://www.osti.gov/servlets/purl/1570298.
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@article{osti_1570298,
title = {Compensation of Dispersion in Sinuous Antennas for Polarimetric Ground Penetrating Radar Applications},
author = {Crocker, Dylan Andrew and Scott, Jr., Waymond R.},
abstractNote = {In order to improve the accuracy of subsurface target classification with ground penetrating radar (GPR) systems, it is desired to transmit and receive ultra-wide band pulses with varying combinations of polarization (a technique referred to as polarimetry). The sinuous antenna exhibits such desirable properties as ultra-wide bandwidth, polarization diversity, and low-profile form factor, making it an excellent candidate for the radiating element of such systems. However, sinuous antennas are dispersive since the active region moves with frequency along the structure, resulting in the distortion of radiated pulses. This distortion may be compensated in signal processing with accurately simulated or measured antenna phase information. However, in a practical GPR, the antenna performance may deviate from that simulated, accurate measurements may be impractical, and/or the dielectric loading of the environment may cause deviations. In such cases, it may be desirable to employ a simple dispersion model based on antenna design parameters which may be optimized in situ. This paper explores the dispersive properties of the sinuous antenna and presents a simple, adjustable, model that may be used to correct dispersed pulses. Here, the dispersion model is successfully applied to both simulated and measured scenarios, thereby enabling the use of sinuous antennas in polarimetric GPR applications.},
doi = {10.3390/rs11161937},
journal = {Remote Sensing},
number = 16,
volume = 11,
place = {United States},
year = {Mon Aug 19 00:00:00 EDT 2019},
month = {Mon Aug 19 00:00:00 EDT 2019}
}
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Journal Article:
Free Publicly Available Full Text
Publisher's Version of Record
https://doi.org/10.3390/rs11161937
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Cited by: 4 works
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Figures / Tables:

Figure 1 Figure 1: Sinuous antennas having parameters: $P$ = 20 cells, $τ$ = 0.8547 (left); $P$ = 16 cells, $τ$ = 0.8228 (center); and $P$ = 12 cells, $τ$ = 0.773 (right). Other parameters constant for all antennas: $N$ = 4 arms, $R$$T$ = 10 CM, $R$in = 0.4 cm, $α$more » = 45°, and $δ$ = 22.5°.« less
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Works referenced in this record:

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