Navys N Layer Magnetic Model With Application To Naval Magnetic Demining
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Author | : Sam Poteete |
Publisher | : |
Total Pages | : 104 |
Release | : 2010 |
Genre | : Oceanography |
ISBN | : |
The Navy and Marine Corps' Forward ... From the Sea strategic concept has expanded naval operations from open-ocean, blue-water combat environments to the littoral regions in which naval mines can both be an extremely menacing threat to U.S. forces and an effective force multiplier for the Fleet. The Navy/Marine Corps must have efficient Mine Warfare (MIW) forces to ensure the Fleet can carry out operations in the open ocean and littorals, including maintaining open sea lanes of communication and supporting Ship-to- Objective Maneuver Warfare from the Sea while denying operating areas to the enemy. Every ship has a magnetic signature, which is caused by its iron and steel components. Additionally, the earth's natural magnetic field induces a magnetization in a ship depending on its latitude, longitude, and heading. Exploitation of surface ship and submarine magnetic field signatures by naval influence mines has occurred throughout time. In order to calculate the swept path width for magnetic minesweeping systems currently in use by the U.S. Mine Warfare (MIW) forces, it is necessary to calculate the vector components of the magnetic field strength which are generated by each of several possible system configurations. The Navy's Magnetic Model addresses this needed capability. The Navy's N-Layer Magnetic Model (NLMM) is used to predict the expected performance of magnetic minesweeping equipment in a complex environment consisting of N layers, each with arbitrary conductivity and thickness. The model is used to compute the magnetic field strength produced by various U.S. Navy magnetic minesweeping configurations using a random environmental vertical conductivity structure. To better determine which parameters had the greatest effect on the model, and which could be simplified or enhanced, a series of tests were run on actual data sets.
Author | : John Holmes |
Publisher | : Springer Nature |
Total Pages | : 67 |
Release | : 2022-05-31 |
Genre | : Technology & Engineering |
ISBN | : 3031016939 |
Surface ship and submarine magnetic field signatures have been exploited for over 80 years by naval influence mines, and both underwater and airborne surveillance systems. The generating mechanism of the four major shipboard sources of magnetic fields is explained, along with a detailed description of the induced and permanent ferromagnetic signature characteristics. A brief historical summary of magnetic naval mine development during World War II is followed by a discussion of important improvements found in modern weapons, including an explanation of the damage mechanism for non-contact explosions. A strategy for selecting an optimum mine actuation threshold is given. A multi-layered defensive strategy against naval mines is outlined, with graphical explanations of the relationships between ship signature reduction and minefield clearing effectiveness. In addition to a brief historical discussion of underwater and airborne submarine surveillance systems and magnetic field sensing principles, mathematical formulations are presented for computing the expected target signal strengths and noise levels for several barrier types. Besides the sensor self-noise, equations for estimating geomagnetic, ocean surface wave, platform, and vector sensor motion noises will be given along with simple algorithms for their reduction.
Author | : Alfred Goldberg |
Publisher | : Office of the Secretary, Historical Offi |
Total Pages | : 330 |
Release | : 2007-09-05 |
Genre | : Architecture |
ISBN | : |
The most comprehensive account to date of the 9/11 attack on the Pentagon and aftermath, this volume includes unprecedented details on the impact on the Pentagon building and personnel and the scope of the rescue, recovery, and caregiving effort. It features 32 pages of photographs and more than a dozen diagrams and illustrations not previously available.
Author | : National Research Council |
Publisher | : National Academies Press |
Total Pages | : 218 |
Release | : 2001-09-19 |
Genre | : Technology & Engineering |
ISBN | : 0309170559 |
Sea mines have been important in naval warfare throughout history and continue to be so today. They have caused major damage to naval forces, slowed or stopped naval actions and commercial shipping, and forced the alteration of strategic and tactical plans. The threat posed by sea mines continues, and is increasing, in today's world of inexpensive advanced electronics, nanotechnology, and multiple potential enemies, some of which are difficult to identify. This report assesses the Department of the Navy's capabilities for conducting naval mining and countermining sea operations.
Author | : Worrall Reed Carter |
Publisher | : |
Total Pages | : 520 |
Release | : 1953 |
Genre | : Government publications |
ISBN | : |
Author | : Defense Documentation Center (U.S.) |
Publisher | : |
Total Pages | : 1032 |
Release | : 1963 |
Genre | : Science |
ISBN | : |
Author | : Robert Caruthers Duncan |
Publisher | : |
Total Pages | : 194 |
Release | : 1962 |
Genre | : Submarine mines |
ISBN | : |
This volume is devoted to the history and use by the United States of one of the Navy's least spectacular and most effective weapons. The effectiveness of the submarine mine has not decreased with the coming of the space age. So long as cargo ships cross the sea, this unspectacular weapon will remain a major factor in control of the approaches to harbors, and the shallow straits between seas. Robert Duncan has devoted most of his adult life to the generation and augmentation of competence in the application of growing science to the design, production, and use of mines for the U.S. Navy. He joined the staff of the Naval Ordnance Laboratory before it was known by that name, but in time to capitalize on the experience of the Navy with mines in World War I. He provided the technical leadership which was an important factor in keeping the art and science of mining alive in the Navy in the days of the depression. By so doing, he provided a basis for a hundredfold expansion of the Navy's effort previous to and during World War II. The hundreds of technical people who had the privilege of joining in this effort under Dr. Duncan's leadership will be happy to see this accurate and factual record of achievement. The experience recorded between these covers will serve as a guide to those still engaged in the development of this type of weapon, and the achievements made during World War II will be an inspiration to any who might be responsible for again expanding our national effort in mining, should the occasion arise. (Author).
Author | : National Research Council |
Publisher | : National Academies Press |
Total Pages | : 112 |
Release | : 2000-03-07 |
Genre | : Technology & Engineering |
ISBN | : 0309172225 |
Environmental information is important for successful planning and execution of naval operations. A thorough understanding of environmental variability greatly increases the likelihood of mission success. To ensure that naval forces have the most up-to-date capabilities, the Office of Naval Research (ONR) has an extensive environmental research program. This research, to be of greatest use to the warfighter, needs to be directed towards assisting and solving battlefield problems. To increase research community understanding of the operational demands placed on naval operators and to facilitate discussion between these two groups, the National Research Council's (NRC) Ocean Studies Board (OSB), working with ONR and the Office of the Oceanographer of the Navy, convened five previous symposia on tactical oceanography. Oceanography and Mine Warfare examines the following issues: (1) how environmental data are used in current mine warfare doctrine, (2) current procedures for in situ collection of data, (3) the present capabilities of the Navy's oceanographic community to provide supporting information for mine warfare operations, and (4) the ability of oceanographic research and technology developments to enhance current mine warfare capabilities. This report primarily concentrates on the importance of oceanographic data for mine countermeasures.
Author | : National Defense University Press |
Publisher | : NDU Press |
Total Pages | : 529 |
Release | : 2010-09 |
Genre | : Psychology |
ISBN | : 1907521658 |
Includes a foreword by Major General David A. Rubenstein. From the editor: "71F, or "71 Foxtrot," is the AOC (area of concentration) code assigned by the U.S. Army to the specialty of Research Psychology. Qualifying as an Army research psychologist requires, first of all, a Ph.D. from a research (not clinical) intensive graduate psychology program. Due to their advanced education, research psychologists receive a direct commission as Army officers in the Medical Service Corps at the rank of captain. In terms of numbers, the 71F AOC is a small one, with only 25 to 30 officers serving in any given year. However, the 71F impact is much bigger than this small cadre suggests. Army research psychologists apply their extensive training and expertise in the science of psychology and social behavior toward understanding, preserving, and enhancing the health, well being, morale, and performance of Soldiers and military families. As is clear throughout the pages of this book, they do this in many ways and in many areas, but always with a scientific approach. This is the 71F advantage: applying the science of psychology to understand the human dimension, and developing programs, policies, and products to benefit the person in military operations. This book grew out of the April 2008 biennial conference of U.S. Army Research Psychologists, held in Bethesda, Maryland. This meeting was to be my last as Consultant to the Surgeon General for Research Psychology, and I thought it would be a good idea to publish proceedings, which had not been done before. As Consultant, I'd often wished for such a document to help explain to people what it is that Army Research Psychologists "do for a living." In addition to our core group of 71Fs, at the Bethesda 2008 meeting we had several brand-new members, and a number of distinguished retirees, the "grey-beards" of the 71F clan. Together with longtime 71F colleagues Ross Pastel and Mark Vaitkus, I also saw an unusual opportunity to capture some of the history of the Army Research Psychology specialty while providing a representative sample of current 71F research and activities. It seemed to us especially important to do this at a time when the operational demands on the Army and the total force were reaching unprecedented levels, with no sign of easing, and with the Army in turn relying more heavily on research psychology to inform its programs for protecting the health, well being, and performance of Soldiers and their families."
Author | : United States. Joint Chiefs of Staff |
Publisher | : |
Total Pages | : 392 |
Release | : 1979 |
Genre | : Military art and science |
ISBN | : |