Examinando por Autor "Marulanda B., J.I."

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    Ítem
    Analysis of a developed analog trilateration system of impulsive sounds
    (SPIE-INT SOC OPTICAL ENGINEERING, 2014-01-01) López R., J.M.; Marulanda B., J.I.; Universidad EAFIT. Departamento de Ciencias Básicas; Óptica Aplicada
    A characterization study is made from a trilateration system for impulsive sounds, in which theoretical analysis and experimental results are presented. This system uses an analog trilateration method, avoiding to implement high frequency ADC conversion elements. It also presents the optimization of the chosen array of microphones, thus allowing for a better trilateration algorithm behavior. © 2014 SPIE.
  • No hay miniatura disponible
    Ítem
    Analysis of a developed analog trilateration system of impulsive sounds
    (SPIE-INT SOC OPTICAL ENGINEERING, 2014-01-01) López R., J.M.; Marulanda B., J.I.; López R., J.M.; Marulanda B., J.I.; Universidad EAFIT. Departamento de Ciencias; Electromagnetismo Aplicado (Gema)
    A characterization study is made from a trilateration system for impulsive sounds, in which theoretical analysis and experimental results are presented. This system uses an analog trilateration method, avoiding to implement high frequency ADC conversion elements. It also presents the optimization of the chosen array of microphones, thus allowing for a better trilateration algorithm behavior. © 2014 SPIE.
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    Ítem
    Gunshot identification system by integration of open source consumer electronics
    (SPIE-INT SOC OPTICAL ENGINEERING, 2014-01-01) López R., J.M.; Marulanda B., J.I.; López R., J.M.; Marulanda B., J.I.; Universidad EAFIT. Departamento de Ciencias; Electromagnetismo Aplicado (Gema)
    This work presents a prototype of low-cost gunshots identification system that uses consumer electronics in order to ensure the existence of gunshots and then classify it according to a previously established database. The implementation of this tool in the urban areas is to set records that support the forensics, hence improving law enforcement also on developing countries. An analysis of its effectiveness is presented in comparison with theoretical results obtained with numerical simulations. © 2014 SPIE.
  • No hay miniatura disponible
    Ítem
    Gunshot identification system by integration of open source consumer electronics
    (SPIE-INT SOC OPTICAL ENGINEERING, 2014-01-01) López R., J.M.; Marulanda B., J.I.; Universidad EAFIT. Departamento de Ciencias Básicas; Óptica Aplicada
    This work presents a prototype of low-cost gunshots identification system that uses consumer electronics in order to ensure the existence of gunshots and then classify it according to a previously established database. The implementation of this tool in the urban areas is to set records that support the forensics, hence improving law enforcement also on developing countries. An analysis of its effectiveness is presented in comparison with theoretical results obtained with numerical simulations. © 2014 SPIE.
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    Ítem
    Low-cost detection of RC-IED activation signals in VHF band
    (SPIE-INT SOC OPTICAL ENGINEERING, 2014-01-01) Camargo Suarez, V.H.; Marulanda B., J.I.; Universidad EAFIT. Departamento de Ciencias Básicas; Óptica Aplicada
    The proliferation of Radio Controlled Improvised Explosive Devices (RC-IED) is a growing threat around the world. The ease of construction and low cost of these devices are transforming common things in lethal tramps. The fight against this threats normally involves the use of sophisticated and expensive equipment of Electronic Warfare based on high speed DSP systems, just to detect the presence of detonation signals. In this work is showed how to find activation signals based on the characteristic of the power in a specific band and the previous knowledge about the detonation signals. As proof of concept we have taken the information about the RC-IEDs used in the Colombian conflict and develop an algorithm to find detonation signals based on the measured power in frequencies between 136 MHz and 174 MHz (2 meter civil band). © 2014 SPIE.4.
  • No hay miniatura disponible
    Ítem
    Low-cost detection of RC-IED activation signals in VHF band
    (SPIE-INT SOC OPTICAL ENGINEERING, 2014-01-01) Camargo Suarez, V.H.; Marulanda B., J.I.; Camargo Suarez, V.H.; Marulanda B., J.I.; Universidad EAFIT. Departamento de Ciencias; Electromagnetismo Aplicado (Gema)
    The proliferation of Radio Controlled Improvised Explosive Devices (RC-IED) is a growing threat around the world. The ease of construction and low cost of these devices are transforming common things in lethal tramps. The fight against this threats normally involves the use of sophisticated and expensive equipment of Electronic Warfare based on high speed DSP systems, just to detect the presence of detonation signals. In this work is showed how to find activation signals based on the characteristic of the power in a specific band and the previous knowledge about the detonation signals. As proof of concept we have taken the information about the RC-IEDs used in the Colombian conflict and develop an algorithm to find detonation signals based on the measured power in frequencies between 136 MHz and 174 MHz (2 meter civil band). © 2014 SPIE.4.
  • No hay miniatura disponible
    Ítem
    Low-cost localization system of impulsive sounds for urban environments
    (SPIE-INT SOC OPTICAL ENGINEERING, 2014-01-01) López R., J.M.; Marulanda B., J.I.; Universidad EAFIT. Departamento de Ciencias Básicas; Óptica Aplicada
    A low-cost acoustic localization system is presented, in which a video camera is directed towards the source of impulsive sounds such as gunshots. An analog filter is implemented at the first stage, in order to reduce the range of frequencies to analyze, hence narrowing and improving the localization of gunshots. The system is design for the integration of open source consumer electronics and processing devices, which makes large-scale deployment possible even in developing countries. Furthermore, results are also obtained with a prototype that shows a high percentage of successes.. © 2014 SPIE.
  • No hay miniatura disponible
    Ítem
    Low-cost localization system of impulsive sounds for urban environments
    (SPIE-INT SOC OPTICAL ENGINEERING, 2014-01-01) López R., J.M.; Marulanda B., J.I.; López R., J.M.; Marulanda B., J.I.; Universidad EAFIT. Departamento de Ciencias; Electromagnetismo Aplicado (Gema)
    A low-cost acoustic localization system is presented, in which a video camera is directed towards the source of impulsive sounds such as gunshots. An analog filter is implemented at the first stage, in order to reduce the range of frequencies to analyze, hence narrowing and improving the localization of gunshots. The system is design for the integration of open source consumer electronics and processing devices, which makes large-scale deployment possible even in developing countries. Furthermore, results are also obtained with a prototype that shows a high percentage of successes.. © 2014 SPIE.