Customer case aboutdetection of floating mines in rivers

detection of floating mines in rivers

Using optical flow for the detection of floating mines in

Sep 01, 2006 In the first Gulf War, unmoored floating mines proved to be a real hazard for shipping traffic. An automated system capable of detecting these and other free-floating small objects, using readily available sensors such as infra-red cameras, would prove to be a valuable mine-warfare asset, and could double as a collision avoidance mechanism, and a search-and-rescue aid.

RPT-46-GS-11 Methods for Detection of Floating Debris

Much of the debris will float low in the water, possibly submerging intermittently, which presents a significant challenge for systems deployed for detection. As an initial study, the objective is to identify candidate technologies, sensors, systems and methods of reliable detection of floating debris.

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. IR video was chosen for its day-and-night imaging capability

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

Jun 01, 2012 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.

Detection of floating mines in infrared sequences by

May 10, 2012 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.

Kayak Through An Abandoned Mine Tunnel On The Etowah River

Aug 18, 2019 Kayak Through This Unique Abandoned Mine Tunnel In Georgia. Georgia is filled with outdoor adventures for the whole family, from the stunning waterfall hikes to nighttime swamp tours. But this particular adventure in Georgia might just be the end-all-be-all in terms of nature, excitement, and adrenaline-pumping fun.

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.

Naval mine Wikipedia

A naval mine is a self-contained explosive device placed in water to damage or destroy surface ships or submarines.Unlike depth charges, mines are deposited and left to wait until they are triggered by the approach of, or contact with, any vessel.Naval mines can be used offensively, to hamper enemy shipping movements or lock vessels into a harbour; or defensively, to protect friendly vessels

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.

Using optical flow for the detection of floating mines in

In the first Gulf War, unmoored floating mines proved to be a real hazard for shipping traffic. An automated system capable of detecting these and other free-floating small objects, using readily available sensors such as infra-red cameras, would prove to be a valuable mine-warfare asset, and could double as a collision avoidance mechanism, and a search-and-rescue aid.

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. IR video was chosen for its day-and-night imaging capability

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

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).

State signs off on copper mine near Smith River

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

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

CiteSeerX — Detection of floating mines in infrared

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

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.

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

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

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.

A novel ocean color index to detect floating algae in the

Oct 01, 2009 Various types of floating algae have been reported in open oceans and coastal waters, yet accurate and timely detection of these relatively small surface features using traditional satellite data and algorithms has been difficult or even impossible due to lack of spatial resolution, coverage, revisit frequency, or due to inherent algorithm limitations.

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

Arkansas River Gold Prospecting Locations

Mar 25, 2017 Early Gold Mining on the Arkansas River . Gold was first discovered on the river in the 1540s by Spanish prospectors. Most of the early mining was small operations by Spanish miners. Today these old mines are simply known as the Old Spanish Diggings. These was relatively small mining

6 Arizona Rivers where you Can Successfully Find Gold

Mar 20, 2017 Gold was contained in old river gravels resting on the conglomerate in some of the curves. The Smuggler placer mine was at a bend in the San Francisco River. The gravels in this area contained much fine gold. 5. Santa Maria River . North of Hillside Station near the Santa Maria River was the Mammoth or Hubbard Mine, which produced some lode

An Automatic Detection Algorithm for River Floating Object

An Automatic Detection Algorithm for River Floating Object Based on Image. Techniques of automatic real-time detection of slow-moving point target in the low SNR infrared image sequence are

Feature analysis on river flow video data for floating

Feature analysis on river flow video data for floating tracers detection . By Anastasia Pentari(), Konstantia a significant water quality problem that can be posed as the calculation of the distribution of suspended sediments in rivers. More specifically, we propose a method that performs tracking and motion estimation on river floating

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

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.

A novel ocean color index to detect floating algae in the

Oct 01, 2009 Various types of floating algae have been reported in open oceans and coastal waters, yet accurate and timely detection of these relatively small surface features using traditional satellite data and algorithms has been difficult or even impossible due to lack of spatial resolution, coverage, revisit frequency, or due to inherent algorithm limitations.

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

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

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

Arkansas River Gold Prospecting Locations

Mar 25, 2017 Early Gold Mining on the Arkansas River . Gold was first discovered on the river in the 1540s by Spanish prospectors. Most of the early mining was small operations by Spanish miners. Today these old mines are simply known as the Old Spanish Diggings. These was relatively small mining

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.

Mine Warfare in the Civil War The Campaign for the

Before departing Vicksburg, Rains left behind a few shells buried in the river bank that were found and disabled when the Confederate forces surrendered the city. Other mines placed along two roads leading out of the town slowed the Union approach to Jackson, the state capital.

Methods of Gold Mining Geology In

Barrick Gold Corporation has one of the largest open-pit gold mines in North America located on its Goldstrike mine property in northeastern Nevada. Other gold mines use underground mining, where the ore is extracted through tunnels or shafts. South Africa has the world's deepest hard rock gold mine up to 3,900 metres (12,800 ft) underground.

MINISTRY OF NATURAL RESOURCES AND ENVIRONMENT

river bank erosion, river bed degradation, river buffer zone encroachment and deterioration of river water quality. Very often, over-mining occurs which jeopardises the health of the river and the environment in general. There is a need for the Department of Irrigation and Drainage (DID) to be equipped with the

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.

Mine worker’s body found floating in river Nehanda Radio

Jan 04, 2019 Mine worker’s body found floating in river. On Jan 4, 2019 37,291. By Sukulwenkosi Dube-Matutu. The body of a mine worker was found floating in Mtshabezi River

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