This effort has examined the problem of detection and classification of buried munitions in underwater environments. We have focused on the use of low frequency sonar since high frequency acoustic waves are strongly attenuated by sediments. The focus of this effort has been to process low-frequency data collected from the Buried Object Scanning Sonar (BOSS) into 3D imagery using beamforming, an...

Vietnam is a country that found itself at the center of Indochina wars and was subjected to most intense aerial bombing in history. However, little research has been done on effect unexploded ordnance (UXO) contamination household livelihoods rural Vietnam. In this paper, we investigate contaminating households. Livelihood choices are classified by cluster analysis techniques, measured district...

Demining and unexploded ordnance (UXO) clearance are extremely tedious and dangerous tasks. The use of robots bypasses the hazards and potentially increases the efficiency of both tasks. A first crucial step towards robotic mine/UXO clearance is to locate all the targets. This requires a path planner that generates a path to pass a detector over all points of a mine/UXO field, i.e., a planner t...

A new circle detection algorithm based on the gradient of the intensity image is proposed. The method relies on two conditions. The “gradient angle compatibility condition” constraints the gradient of a given percentage of the pixels belonging to some digital circles of radius in the range of radii to detect to point towards the centre of the circle or in the opposite direction. The “curvature ...

Electromagnetic induction (EMI) sensing, in both frequency and time domains, is emerging as one of the most promising remote sensing technologies for detection and discrimination of buried metallic objects, particularly unexploded ordinance (UXO). UXO sites are highly contaminated with metallic clutter so that the major problem is discrimination not detection. This requires high fidelity forwar...

An analysis is presented of sound measurements performed near two detonations unexploded ordnance (UXO) in the North Sea, at distances ranging from 1.5 to 12 km. The charge masses were 325 and 140 kg TNT equivalent. objective was improve accuracy model predictions area where UXO affect harbour porpoises Sea. For predictions, an explosion emission combined with a shallow-water propagation model....

A commercial finite-element engineering-analysis code was used to model pulsed-induction (time-domain) sensing of UXO for comparison with measurements made with the Geonics EM61-3D. Late-time decay constants are observed to be independent of shape and orientation in solid nonpermeable (aluminum) objects with the same volume, in agreement with theory, except for flattened objects on end with res...

Demining and unexploded ordnance (UXO) clearance are extremely tedious and dangerous tasks. The use of robots bypasses the hazards and potentially increases the efficiency of both tasks. A first crucial step towards robotic mine/UXO clearance is to locate all the targets. This requires a path planner that generates a path to pass a detector over all points of a mine/UXO field, i.e., a planner t...

Advanced discrimination methods and careful optimization of operational procedures are critical for efficient remediation of unexploded ordnance (UXO) contaminated sites. In this paper, we report on our experiences with a 200 acre magnetic survey that was collected and processed under production survey conditions at Chevallier Ranch, Montana. All anomalies with fitted moments above 0.05 Am were...