detection of floating mines in rivers

Detection and Classification of Small Moving Objects Floating ...

Dec 10, 2019 · OBJECTIVE: Develop sensor technologies with object recognition capabilities that can identify and distinguish, count and geographically locate small objects (<3 inches to >3 feet) floating in riverine environments using long wave infrared imaging polarimetry or a combination of radio, laser detection and ranging radar technologies for above and below water detection.

Matched filter based detection of floating mines in IR spacetime

Ship-based automatic detection of small floating objects on an agitated sea surface remains a hard problem. Our main concern is the detection of floating mines, which proved a real threat to shipping in confined waterways during the first Gulf War, but applications include salvaging,search-and-rescue and perimeter or harbour defense.

Matched filter based detection of floating mines in IR ...

Ship-based automatic detection of small floating objects on an agitated sea surface remains a hard problem. Our main concern is the detection of floating mines, which proved a real threat to shipping in confined waterways during the first Gulf War, but applications include salvaging,search-and-rescue and perimeter or harbour defense.

Detection of floating mines in infrared sequences by ...

Automatic detection of oating mines by passive sensing is of major interest, yet remains a hard problem. In this paper, we propose an algorithm to detect them in infrared sequences, based on their geometry, provided by spatial derivatives. In infrared images, oating mines contrast with the sea due to the dierence of emissivity at low incidence angles: they form bright elliptical areas. Using ...

Design of an Underwater Mine Detection System

Apr 23, 2014 · Mines can float on top of a body of water, rest on the sea floor, or be moored to the sea floor. Mines can also be fitted with technology for detecting certain signals that allow them to be detonated at a more precise location or by a specific target. For example, during World War II, mines were fitted with magnetic sensors in order to detect

Old Naval Mines Still Floating Around | Math Encounters Blog

The mines washing up on beaches have been floating free in the ocean for various reasons. During WW2, minesweepers used paravanes (i.e. towed underwater gliders) to cut the mooring cables of the mines. With their mooring lines cut, the mines would float to the surface and a sailor would shoot a rifle at the mine.

Floating houses: an adaptation strategy for flood ...

examples of floating buildings all over the world (fig. 3). Figure 3: Seoul, floating amusement park opened 2011, Hangang river at night. 2.2 Examples in Germany The following figures represent examples of buildings in Germany floating on lakes of former opencast mines. Figure 4: Floating houses type “Ar-che” in the Lusatian landscape.

Kayak Through An Abandoned Mine Tunnel On The Etowah River In ...

Aug 18, 2019 · And for those who choose to float down Etowah River, there is a surprise waiting for you along the river trail. Flickr Kevin Trotman Kayaking down this relatively calm river in Georgia is a nice treat for many kayakers, until of course, you reach the abandoned mine tunnel.

Hydrometry: measuring the flow rate of a river, why and how ...

The Amazon is an extremely regular river. On the other hand, an African river like the Chari has an average flow of 1197 m 3 /s at its outlet in Lake Chad. Within the same year, the variation in flow between two extreme months is a factor of 20 (150 to 3000 m 3 /s).

Final Report of Stream Sediment, Float, and Bedrock Sampling ...

The Porcupine mining area is approximately bounded by the Tsirku River to the south and east, by the Alaska-British Columbia border to the west and it extends several miles north of the Haines highway. Samples collected between the Tsirku River and the Glacier Bay National Park-boundary, and in the vicinity of Mosquito Lake were also included.

CiteSeerX — Detection of floating mines in infrared sequences ...

BibTeX @MISC{A_detectionof, author = {Dominique Florins A and Antoine Manzanera A}, title = {Detection of floating mines in infrared sequences by multiscale}, year = {}}

Sea-Mines: The Most Lethal Naval Weapon on the Planet | The ...

Sep 01, 2016 · The AQS-24B towed mine hunting sensor is already being used by the U.S. Navy. According to Northrop, the AQS-24 features the world's only high speed synthetic aperture sonar for mine detection ...

Detection and Monitoring of Marine Pollution Using Remote ...

Although some surveys have been undertaken to estimate the density and weight of floating plastic in the oceans globally, there is a lack of long-term and large-scale monitoring. Some research has been conducted using remote sensing technology for the detection of floating marine plastic . However, this research domain is still in its early stages.

From Canadian Coal Mines, Toxic Pollution That Knows No ...

Apr 01, 2019 · Massive open-pit coal mines in British Columbia are leaching high concentrations of selenium into the Elk River watershed, damaging fish populations and contaminating drinking water. Now this pollution is flowing across the Canadian-U.S. border, threatening the quality of U.S. waters.

State signs off on copper mine near Smith River; construction ...

Apr 10, 2020 · “You have thousands of people who float the Smith River every year, that provides hundreds of jobs. We would hate to see that risked.” The mine, about 17 miles north of White Sulphur Springs, would be underground, accessed by a 5,000-foot tunnel that would take about 18 months to build.

Are Sea Mines Still Dangerous? - Slate Magazine

Aug 23, 2000 · Anti-personnel land mines can have as little as 3 pounds of explosives and can cost as little as $3, while sea mines typically carry 500 pounds of explosives and even a low-technology moored mine ...

Relational Abstract Domains for the Detection of Floating ...

Floating-PointIntervalAnalysis.Interval analysis is a non-relational Ab-stractInterpretation-basedanalysiswhere,ateachprogrampointandforeach variable, the set of its possible values during all executionsreaching this point is over-approximated by an interval. An abstract environment ‰] is a func-tion mapping each variable v 2Vf to an element ...

Mines - Federation of American Scientists

Mine warfare began in 1776 when David Bushnell invented the "Bushnell's Keg." This primitive mine was composed of a watertight keg filled with black powder and a flintlock detonator which was suspended from a float. These kegs were placed in the Delaware River so that, it was hoped, they would float into British ships downriver.

History and Technology - Mine Warfare - NavWeaps

The environment of rivers is not an easy one for either offensive or defensive mine warfare operations. The combination of fast-flowing waters and silt-covered beds makes conventional mining activities very difficult. Usually resort is made to floating mines which are dropped in upstream of the target and allowed to run down into the target.

Mines of the United States of America - NavWeaps

Used a protruding float made of cork, 3 feet (0.91 m) long, for inertia ignition - contact with a ship made the mine rotate relative to the float. Launched from trolley rails. Production started around 1915 and by 1917 the Portsmouth Navy Yard was manufacturing 140 of these per week with plans to ramp up production to 500 per week.

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