scholarly journals Portable and Easily-Deployable Air-Launched GPR Scanner

2020 ◽  
Vol 12 (11) ◽  
pp. 1833
Author(s):  
María García-Fernández ◽  
Yuri Álvarez López ◽  
Alessandro De Mitri ◽  
David Castrillo Martínez ◽  
Guillermo Álvarez-Narciandi ◽  
...  
Keyword(s):  
Simple Technique ◽  
Weather Conditions ◽  
Improvised Explosive Devices ◽  
Fast Detection ◽  
Antenna Phase ◽  
Detection Capabilities ◽  
Antenna Phase Center ◽  
Ground Penetrating ◽  
Improvised Explosive ◽  
Explosive Devices

In recent years, Unmanned Aerial Vehicles (UAV)-based Ground Penetrating Radar (GPR) systems have been developed due to their advantages for safe and fast detection of Improvised Explosive Devices (IEDs) and landmines. The complexity of these systems requires performing extensive measurement campaigns in order to test their performance and detection capabilities. However, UAV flights are limited by weather conditions and battery autonomy. To overcome these problems, this contribution presents a portable and easily-deployable measurement setup which can be used as a testbed for the assessment of the capabilities of the airborne system. In particular, the proposed portable measurement setup replicates fairly well the conditions faced by the airborne system, which can hardly be reproduced in indoor GPR measurement facilities. Three validation examples are presented: the first two analyze the capability of the measurement setup to conduct experiments in different scenarios (loamy and sandy soils). The third example focuses on the problem of antenna phase center displacement with frequency and its impact on GPR imaging, proposing a simple technique to correct it.

Automatic Detection and Classification of Buried Objects Using Ground-Penetrating Radar for Counter-Improvised Explosive Devices

Radio Science ◽  
2018 ◽  
Vol 53 (2) ◽  
pp. 210-227 ◽  
Author(s):  
Nattawat Chantasen ◽  
Akkarat Boonpoonga ◽  
Santana Burintramart ◽  
Krit Athikulwongse ◽  
Prayoot Akkaraekthalin
Keyword(s):  
Ground Penetrating Radar ◽  
Automatic Detection ◽  
Improvised Explosive Devices ◽  
Buried Objects ◽  
Ground Penetrating ◽  
Improvised Explosive ◽  
Explosive Devices

scholarly journals Bistatic Landmine and IED Detection Combining Vehicle and Drone Mounted GPR Sensors

2019 ◽  
Vol 11 (19) ◽  
pp. 2299 ◽  
Author(s):  
Maria Garcia-Fernandez ◽  
Ann Morgenthaler ◽  
Yuri Alvarez-Lopez ◽  
Fernando Las Heras ◽  
Carey Rappaport
Keyword(s):  
Improvised Explosive Devices ◽  
Sar Images ◽  
Full Wave ◽  
Good Penetration ◽  
Ground Penetrating ◽  
Clutter Reduction ◽  
Improvised Explosive ◽  
Explosive Devices ◽  
Constitutive Parameters ◽  
Soil Interface

This work proposes a novel Ground Penetrating Radar (GPR) system to detect landmines and Improvised Explosive Devices (IEDs). The system, which was numerically evaluated, is composed of a transmitter placed on a vehicle and looking forward and a receiver mounted on a drone and looking downwards. This combination offers both a good penetration and a high resolution, enabling the detection of non-metallic targets and mitigating the clutter at the air–soil interface. First, a fast ray tracing simulator was developed to find proper configurations of the system. Then, these configurations were validated using a full wave simulator, considering a flat and a rough surface. All simulations were post-processed using a fast and accurate Synthetic Aperture Radar (SAR) algorithm that takes into account the constitutive parameters of the soil. The SAR images for all configurations were compared, concluding that the proposed contribution greatly improves the target detection and the surface clutter reduction over conventional forward-looking GPR systems.

Four years of orthopaedic activities in Chinese Role 2 Hospital of eastern Mali peacekeeping area

2018 ◽  
Vol 166 (3) ◽  
pp. 156-160 ◽  
Author(s):  
Dawei Zhang ◽  
Z Li ◽  
X Cao ◽  
B Li
Keyword(s):  
Damage Control ◽  
Damage Control Surgery ◽  
Treatment Facility ◽  
Improvised Explosive Devices ◽  
Skill Sets ◽  
Medical Treatment Facility ◽  
Chinese Military ◽  
Surgical Teams ◽  
Improvised Explosive ◽  
Explosive Devices

IntroductionThe Chinese Role 2 Hospital (CHN-Role 2H) Medical Treatment Facility (MTF) was founded in July 2013 as part of the Chinese commitment to Multidimensional Integrated Stabilization Mission in Mali (MINUSMA). It provides medical care for approximately 5200 personnel of the whole Sector East of MINUSMA including UN military personnel, UN police and UN civilian staff. The aim of this study was to determine the orthopaedic surgical activity over a 4-year period to facilitate the training of future Chinese military surgical teams.Materials and methodsSurgical records of all patients operated on at the CHN-Role 2H between 28 March 2014 to 28 March 2018 were identified, and all orthopaedic activity were analysed.ResultsDuring this period, 1190 patients underwent 2024 surgical procedures. Orthopaedic procedures represented 961/2024 (47.5%) of all the procedures. Battle injury (BI) represented 43% of patients. Improvised explosive devices (IEDs) were responsible for 15.8 % casualties. Fractures (49%) and soft tissue injures (43%) were the most common injuries, with 61% of the fractures being open. Damage control surgery including debridement (23.52%) and external fixation (17.90%) were the most frequently performed interventions.ConclusionOrthopaedic surgery is the most frequently performed surgery in the CHN-Role 2H in Mali. The complexity and severity of injuries demonstrate the urgent need for tailored training and extended skill sets for deploying military orthopaedic surgeons.

scholarly journals Frequency of Improvised Explosive Devices and Suicide Attempts in the U.S. Army

2017 ◽  
Vol 182 (3) ◽  
pp. e1697-e1703 ◽  
Author(s):  
Robert J. Ursano ◽  
Ronald C. Kessler ◽  
James A. Naifeh ◽  
Holly Herberman Mash ◽  
Carol S. Fullerton ◽  
...  
Keyword(s):  
Suicide Attempts ◽  
Improvised Explosive Devices ◽  
Improvised Explosive ◽  
Explosive Devices ◽  
The U.S
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