Nuclear quadrupole resonance system for landmine detection in Antioquia

Colombia ranks second in the world by number of victims from landmines; and in Colombia, Antioquia is the most affected department. As most landmines in Antioquia do not have metallic parts, metal detectors became useless, however, in most of those mines, the explosive mixture includes ammonium nitr...

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Detalhes bibliográficos
Autor: Cardona Rendon, Lorena
Formato: tesis doctoral
Estado:Versión aceptada para publicación
Fecha de publicación:2017
País:Colombia
Recursos:Universidad Nacional de Colombia
Repositorio:Repositorio UN
Idioma:español
OAI Identifier:oai:repositorio.unal.edu.co:unal/59100
Acesso em linha:https://repositorio.unal.edu.co/handle/unal/59100
http://bdigital.unal.edu.co/56322/
Access Level:acceso abierto
Palavra-chave:62 Ingeniería y operaciones afines / Engineering
nuclear quadrupole resonance
resonancia nuclear en cuadrupolo
NQR
landmine detection
minas antipersona
MAP
demining technologies
desminado
deteccion de minas
deteccion de explosivos
explosive detection
id CO_2a924efba3effdc1ef6c3fc2ceaba6b1
oai_identifier_str oai:repositorio.unal.edu.co:unal/59100
network_acronym_str CO
network_name_str Colombia
repository_id_str
dc.title.none.fl_str_mv Nuclear quadrupole resonance system for landmine detection in Antioquia
title Nuclear quadrupole resonance system for landmine detection in Antioquia
spellingShingle Nuclear quadrupole resonance system for landmine detection in Antioquia
Cardona Rendon, Lorena
62 Ingeniería y operaciones afines / Engineering
nuclear quadrupole resonance
resonancia nuclear en cuadrupolo
NQR
landmine detection
minas antipersona
MAP
demining technologies
desminado
deteccion de minas
deteccion de explosivos
explosive detection
title_short Nuclear quadrupole resonance system for landmine detection in Antioquia
title_full Nuclear quadrupole resonance system for landmine detection in Antioquia
title_fullStr Nuclear quadrupole resonance system for landmine detection in Antioquia
title_full_unstemmed Nuclear quadrupole resonance system for landmine detection in Antioquia
title_sort Nuclear quadrupole resonance system for landmine detection in Antioquia
dc.creator.none.fl_str_mv Cardona Rendon, Lorena
author Cardona Rendon, Lorena
author_facet Cardona Rendon, Lorena
author_role author
dc.contributor.none.fl_str_mv Jimenez Builes, Jovani Alberto
dc.subject.none.fl_str_mv 62 Ingeniería y operaciones afines / Engineering
nuclear quadrupole resonance
resonancia nuclear en cuadrupolo
NQR
landmine detection
minas antipersona
MAP
demining technologies
desminado
deteccion de minas
deteccion de explosivos
explosive detection
topic 62 Ingeniería y operaciones afines / Engineering
nuclear quadrupole resonance
resonancia nuclear en cuadrupolo
NQR
landmine detection
minas antipersona
MAP
demining technologies
desminado
deteccion de minas
deteccion de explosivos
explosive detection
description Colombia ranks second in the world by number of victims from landmines; and in Colombia, Antioquia is the most affected department. As most landmines in Antioquia do not have metallic parts, metal detectors became useless, however, in most of those mines, the explosive mixture includes ammonium nitrate, and thus a system able to detect this compound could help to locate the mines. On the other side, nuclear quadrupole resonance (NQR) is a spectroscopic technique that allows the detection of some compounds very specifically. Thus, this work had the purpose of developing a system for remote sensing of ammonium nitrate in landmines by NQR. To achieve this goal, a portable NQR device was constructed as well as a probe, capable of sending radiofrequency pulses at the resonance frequency of ammonium nitrate, and capable of picking up the NQR signal after excitation. The manufactured system was tested against some environmental factors, concluding that the most affecting ones are soil conductivity and landmine shape. After achieving a functional system, a classifier based on spectral descriptors was trained, using data acquired with and without ammonium nitrate. Experimental results showed that the proposed classifier (an ensemble of 20 decision trees) had better performance, in terms of the area under the receiver operating characteristic curve, than the classical solution on the literature (which relies only on signal intensity). A final test validated the performance of the system, which detected four of five buried targets in an area of 2 x 1,6 m, having 3 false alarms.
publishDate 2017
dc.date.none.fl_str_mv 2017-03-17
2019-07-02T15:22:33Z
2019-07-02T15:22:33Z
dc.type.none.fl_str_mv Trabajo de grado - Doctorado
info:eu-repo/semantics/doctoralThesis
info:eu-repo/semantics/acceptedVersion
http://purl.org/coar/resource_type/c_db06
http://purl.org/coar/version/c_ab4af688f83e57aa
Text
http://purl.org/redcol/resource_type/TD
format doctoralThesis
status_str acceptedVersion
dc.identifier.none.fl_str_mv https://repositorio.unal.edu.co/handle/unal/59100
http://bdigital.unal.edu.co/56322/
url https://repositorio.unal.edu.co/handle/unal/59100
http://bdigital.unal.edu.co/56322/
dc.language.none.fl_str_mv spa
language spa
dc.relation.none.fl_str_mv Universidad Nacional de Colombia Sede Medellín Facultad de Minas Escuela de Sistemas
Escuela de Sistemas
Cardona Rendon, Lorena (2017) Nuclear quadrupole resonance system for landmine detection in Antioquia. Doctorado thesis, Universidad Nacional de Colombia - Sede Medellin.
dc.rights.none.fl_str_mv Derechos reservados - Universidad Nacional de Colombia
Atribución-NoComercial 4.0 Internacional
http://creativecommons.org/licenses/by-nc/4.0/
info:eu-repo/semantics/openAccess
rights_invalid_str_mv Derechos reservados - Universidad Nacional de Colombia
Atribución-NoComercial 4.0 Internacional
http://creativecommons.org/licenses/by-nc/4.0/
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
application/pdf
dc.source.none.fl_str_mv reponame:Repositorio UN
instname:Universidad Nacional de Colombia
instacron:Universidad Nacional de Colombia
instname_str Universidad Nacional de Colombia
instacron_str Universidad Nacional de Colombia
institution Universidad Nacional de Colombia
reponame_str Repositorio UN
collection Repositorio UN
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spelling Nuclear quadrupole resonance system for landmine detection in AntioquiaCardona Rendon, Lorena62 Ingeniería y operaciones afines / Engineeringnuclear quadrupole resonanceresonancia nuclear en cuadrupoloNQRlandmine detectionminas antipersonaMAPdemining technologiesdesminadodeteccion de minasdeteccion de explosivosexplosive detectionColombia ranks second in the world by number of victims from landmines; and in Colombia, Antioquia is the most affected department. As most landmines in Antioquia do not have metallic parts, metal detectors became useless, however, in most of those mines, the explosive mixture includes ammonium nitrate, and thus a system able to detect this compound could help to locate the mines. On the other side, nuclear quadrupole resonance (NQR) is a spectroscopic technique that allows the detection of some compounds very specifically. Thus, this work had the purpose of developing a system for remote sensing of ammonium nitrate in landmines by NQR. To achieve this goal, a portable NQR device was constructed as well as a probe, capable of sending radiofrequency pulses at the resonance frequency of ammonium nitrate, and capable of picking up the NQR signal after excitation. The manufactured system was tested against some environmental factors, concluding that the most affecting ones are soil conductivity and landmine shape. After achieving a functional system, a classifier based on spectral descriptors was trained, using data acquired with and without ammonium nitrate. Experimental results showed that the proposed classifier (an ensemble of 20 decision trees) had better performance, in terms of the area under the receiver operating characteristic curve, than the classical solution on the literature (which relies only on signal intensity). A final test validated the performance of the system, which detected four of five buried targets in an area of 2 x 1,6 m, having 3 false alarms.Resumen: Colombia es el segundo país con mayor número de víctimas por minas antipersona (MAP) en el mundo, siendo Antioquia es el departamento más afectado. La mayoría de las MAP en Antioquia contienen nitrato de amonio y la resonancia nuclear en cuadrupolo (NQR) es una técnica espectroscópica que permite detectar compuestos de forma muy específica. Así, este trabajo tiene el propósito desarrollar un sistema de NQR para la detección remota de nitrato de amonio en MAP. Para lograr este objetivo, se construyó un equipo portable de NQR, así como un inductor capaz de enviar pulsos a la frecuencia de resonancia del nitrato de amonio y de detectar la señal de NQR. El sistema construido fue probado en diferentes condiciones ambientales y se encontró que los factores que más lo afectan son la conductividad del suelo y la forma de la mina. Luego de lograr un sistema portable y funcional, se entrenó un clasificador basado en descriptores espectrales usando datos adquiridos con y sin nitrato de amonio. A partir de resultados experimentales se encontró que el clasificador entrenado (un ensamble de 20 árboles de decisión) tiene mejor desempeño, en términos del área bajo la curva de característica operativa del receptor, en comparación con la solución extendida en la literatura (que se basa únicamente en la intensidad de la señal). Una última prueba validó el desempeño del sistema, que fue capaz de detectar 5 muestras de nitrato de amonio ocultas en un área de 2 x 1,6 m, con 3 falsas alarmas.DoctoradoJimenez Builes, Jovani Alberto2019-07-02T15:22:33Z2019-07-02T15:22:33Z2017-03-17Trabajo de grado - Doctoradoinfo:eu-repo/semantics/doctoralThesisinfo:eu-repo/semantics/acceptedVersionhttp://purl.org/coar/resource_type/c_db06http://purl.org/coar/version/c_ab4af688f83e57aaTexthttp://purl.org/redcol/resource_type/TDapplication/pdfapplication/pdfhttps://repositorio.unal.edu.co/handle/unal/59100http://bdigital.unal.edu.co/56322/spaUniversidad Nacional de Colombia Sede Medellín Facultad de Minas Escuela de SistemasEscuela de SistemasCardona Rendon, Lorena (2017) Nuclear quadrupole resonance system for landmine detection in Antioquia. Doctorado thesis, Universidad Nacional de Colombia - Sede Medellin.Derechos reservados - Universidad Nacional de ColombiaAtribución-NoComercial 4.0 Internacionalhttp://creativecommons.org/licenses/by-nc/4.0/info:eu-repo/semantics/openAccessreponame:Repositorio UNinstname:Universidad Nacional de Colombiainstacron:Universidad Nacional de Colombia2023-10-11T15:14:42Z
score 15.811543

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