نتایج جستجو برای: buried object detection

تعداد نتایج: 846661  

1998
Bohdan Balko Irvin Kay

This document considers an approach to mine detection based on electromagnetic detection. It involves the use of a magnetic or electric dipole antenna to transmit a low frequency signal that would illuminate and interact with an object, such as a mine, all dimensions of which are small compared to the wavelength as well as to the distance between the object and the antenna. A dipole antenna, wh...

Journal: :iranian journal of radiation research 0
d. rezaei ochbelagh department of physics, university of mohageg ardebily, ardebil, iran h. miri hakimabad department of physics, faculty of sciences, ferdowsi university of mashhad, mashhad, iran r. izadi najafabadi department of physics, faculty of sciences, ferdowsi university of mashhad, mashhad, iran

background: several landmine detection methods, based on nuclear techniques, have been suggested during the recent years. neutron energy moderation, neutron-induced gamma emission, neutron and gamma attenuation, and fast neutron backscattering are nuclear-based methods used for landmine detection. the aim of this study is to use backscattered neutron for landmine detection. materials and method...

2009
D. Singh N. K. Choudhary K. C. Tiwari R. Prasad

A robust algorithm has been developed for improving the backscattered signal and recognizing the shape of the shallow buried metallic object using Artificial Neural Network (ANN) and image analysis techniques for remote sensing at X-band. An ANN with image analysis technique based on tangent analysis is proposed to recognize the shape of metallic buried objects and minimize the orientation effe...

In this paper, we propose a novel framework for behaviors recognition and detection of certain types of abnormal behaviors, capable of achieving high detection rates on a variety of real-life scenes. The new proposed approach here is a combination of the location based methods and the object based ones. First, a novel approach is formulated to use optical flow and binary motion video as the loc...

Journal: :IEEE Transactions on Geoscience and Remote Sensing 2021

Buried landmines and unexploded remnants of war are a constant threat for the population many countries that have been hit by wars in past years. The huge amount casualties has strong motivation research community toward development safe robust techniques designed landmine clearance. Nonetheless, being able to detect localize buried with high precision an automatic fashion is still considered c...

2005
Peter C. Chu Michael Cornelius

The suspended sediment layer occupies the lower water column. Presence of the suspended sediments creates a volume scattering layer which affects acoustic detection. Understanding the acoustic effects of the suspended sediment layer leads to the development of acoustic sensors with capability to scan the seafloor and to detect ordnance such as sea mines. 2. Comprehensive Acoustic Simulation Sys...

2016
Rayn Sakaguchi

Using Image Processing Methods to Improve the Detection of Buried Explosive Threats in GPR Data

Journal: :IEEE Trans. Geoscience and Remote Sensing 2002
Magda El-Shenawee Carey M. Rappaport

A rigorous three-dimensional (3-D) electromagnetic model is developed to analyze the scattering from anti-personnel (AP) nonmetallic mine-like target when it is buried near a clutter object under two-dimensional (2-D) random rough surfaces. The steepest descent fast multipole method (SDFMM) is implemented to solve for the unknown electric and magnetic surface currents on the ground surface, on ...

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