Modeling Ground Penetrating Radar (GPR) Technology for Seed Planting Depth Detection using Numerical Scheme based on Finite Difference Time Domain (FDTD) Method

dc.contributor.author Tekeste, Mehari
dc.contributor.author Birrell, Stuart
dc.contributor.author Tekeste, Mehari
dc.contributor.author Birrell, Stuart
dc.contributor.department Agricultural and Biosystems Engineering
dc.date 2018-02-17T19:03:16.000
dc.date.accessioned 2020-06-29T22:34:43Z
dc.date.available 2020-06-29T22:34:43Z
dc.date.copyright Fri Jan 01 00:00:00 UTC 2016
dc.date.embargo 2016-07-22
dc.date.issued 2016-01-01
dc.description.abstract <p>Ground Penetrating Radar (GPR) is an electromagnetic (EM) signal based technology, commonly used as a non-destructive technique to explore subsurface features and identify different depth profiles in materials. The overall goals of this work is to evaluate GPR for non-destructive mapping of seed planting depth. Soils are inherently complex materials and numerous factors affect GPR behavior. The fundamental factors affecting GPR response are dielectric permittivity, magnetic permeability, and electrical conductivity, which are influenced by soil bulk density, texture, salinity, organic matter, volumetric water content, seed properties and physical geometry. To successfully optimize GPR’s ability to detect seed planting depth, the influence of these factors must be evaluated. This paper describes the development of a single dimensional GPR simulation model, based on finite difference time domain (FDTD) method, to evaluate the use of GPR sensing of seed planting depth. The simulation results shows that the EM signal is highly sensitive to high values of the electrical conductivity. High permittivity values decrease the EM signal velocity, wavelength and strength. A combination of these two properties leads to a significant EM signal attenuation ranging from 0 to ~ 800 dBm-1 as the signal traverses through the soil and seed. The lack of sufficient dielectric contrast between soil and seed presents a challenge on the detectability of the reflected signal by the radar receiver, therefore a sufficient dielectric contrast between the soil and seed has to be present to allow the GPR to be a viable tool to map the seed planting depth.</p>
dc.description.comments <p>This paper is from 2016 ASABE Annual International Meeting, Paper No. 162460299, pages 1-17 (doi: <a href="http://dx.doi.org/10.13031/aim.20162460299">10.13031/aim.20162460299</a>). St. Joseph, Mich.: ASABE. Posted with permission.</p>
dc.format.mimetype application/pdf
dc.identifier archive/lib.dr.iastate.edu/abe_eng_conf/481/
dc.identifier.articleid 1479
dc.identifier.contextkey 8870610
dc.identifier.s3bucket isulib-bepress-aws-west
dc.identifier.submissionpath abe_eng_conf/481
dc.identifier.uri https://dr.lib.iastate.edu/handle/20.500.12876/517
dc.language.iso en
dc.source.bitstream archive/lib.dr.iastate.edu/abe_eng_conf/481/2016_Mapoka_ModelingGround.pdf|||Sat Jan 15 00:27:42 UTC 2022
dc.source.uri 10.13031/aim.20162460299
dc.subject.disciplines Agriculture
dc.subject.disciplines Bioresource and Agricultural Engineering
dc.subject.keywords Conductivity
dc.subject.keywords Electromagnetic
dc.subject.keywords Finite Difference
dc.subject.keywords Permittivity and Seed Planting Depth
dc.title Modeling Ground Penetrating Radar (GPR) Technology for Seed Planting Depth Detection using Numerical Scheme based on Finite Difference Time Domain (FDTD) Method
dc.type article
dc.type.genre conference
dspace.entity.type Publication
relation.isAuthorOfPublication 9bbbff7c-7386-4a17-955f-86c7bde1d8f4
relation.isAuthorOfPublication 1fd6ff71-dbea-4ada-9267-f9ff2ce1caba
relation.isOrgUnitOfPublication 8eb24241-0d92-4baf-ae75-08f716d30801
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