Download or read book Multisensor Methods for Buried Unexploded Ordnance Deteciton Discrimination and Identification written by Dwain Butler and published by . This book was released on 1998 with total page 182 pages. Available in PDF, EPUB and Kindle. Book excerpt: Unexploded ordnance (UXO) cleanup is the number one priority Army installation remediation restoration requirement. The problem is enormous in scope, with millions of acres and hundreds of sites potentially contaminated. Before the UXO can be recovered and destroyed, it must be located. UXO location requires surface geopbysical surveys. The geophysical anomalies caused by the UXO must be detected, discriminated from geophysical anomalies caused by other sources, and ideally identified or classified. Recent UXO technology demonstrations, live site demonstrations, and practical UXO surveys for site cleanup confirm that most UXO anomalies can be detected (with probabilities of detection of 90 percent or better), however there is little evidence of discrimination capability (i.e., the false alarm rates are high), and there is no identification capability. Approaches to simultaneously increase probability of detection and decrease false alarm rate and ultimately to give identification/classification capability involve rational multisensor data integration for discrimination and advanced development of new and emerging technology for enhanced discrimination and identification. The goal of multisensor data integration is to achieve true joint inversion of data to a best-fitting model using realistic physics-based models that replicate UXO geometries and physical properties of the UXO and surrounding geologic materials. Data management, analysis, and display procedures for multisensor data are investigated. A magnetic modeling capability is developed, validated, and documented that uses a prolate spheroid model of UXO. The electromagnetic modeling of UXO signatures is more problematic, and an intermediate quasi-empirical modeling capability (a simple analytical model modified to reflect measured signature observations) is explored.

Download or read book Multisensor Methods for Buried Unexploded Ordnance Detection Discrimination and Identification written by and published by . This book was released on 1998 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Unexploded ordnance (UXO) cleanup is the number one priority Army installation remediation/restoration requirement The problem is enormous in scope, with millions of acres and hundreds of sites potentially contaminated. Before the UXO can be recovered and destroyed, it must be located. UXO location requires surface geophysical surveys. The geophysical anomalies caused by the UXO must be detected, discriminated from geophysical anomalies caused by other sources, and ideally identified or classified. Recent UXO technology demonstrations, live site demonstrations, and practical UXO surveys for site cleanup confirm that most UXO anomalies can be detected (with probabilities of detection of 90 percent or better), however there is little evidence of discrimination capability (i.e., the false alarm rates are high), and there is no identification capability. Approaches to simultaneously increase probability of detection and decrease false alarm rate and ultimately to give identification/classification capability involve rational multisensor data integration for discrimination and advanced development of new and emerging technology for enhanced discrimination and identification. The goal of multisensor data integration is to achieve true joint inversion of data to a best-fitting model using realistic physics-based models that replicate UXO geometries and physical properties of the UXO and surrounding geologic materials. Data management, analysis, and display procedures for multisensor data are investigated. The role of empirical, quasi-empirical, and analytical modeling for UXO geophysical signature prediction are reviewed and contrasted with approaches that require large signature databases (e.g., expert systems, neural nets, signature database comparison) for training or best-fit comparison. A magnetic modeling capability is developed, validated, and documented that uses a prolate spheroid model of UXO.

Download or read book Multi sensor System for the Detection and Characterization of Unexploded Ordnance written by and published by . This book was released on 2011 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: To fully characterize the inductive response of an isolated conductive object, such as buried unexploded ordinance, one needs to measure its response to stimulation by primary magnetic fields in three linearly independent (e.g., approximately orthogonal) directions. In one embodiment this is achieved by measuring the response to magnetic fields of three independent transmitters arranged to have magnetic fields that are linearly independent. According to the apparatus and methods employing the system of this invention, multiple transmitters and receivers of known relative position and orientation on a single platform are used. In a preferred embodiment, matched sets of receiver pairs connected in gradient mode are positioned adjacent to closely spaced pairs of transmitting coils, such that a minor displacement of one or both of the receiver coil pairs relative to the paired transmitting coils will not affect the detected secondary signals emitted by a buried metallic object.

Download or read book Processing Techniques for Discrimination Between Buried UXO and Clutter Using Multisensor Array Data written by and published by . This book was released on 1999 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: The overall objective of this project is to develop reliable techniques for discriminating between buried UXO and clutter using multisensors electromagnetic induction sensor array data. The basic idea is to build on existing research which exploits differences in shape between ordnance and clutter to include the effects of other distinctive properties of ordnance items (fuze bodies, driving bands, fin assemblies, etc.). During the course of this project, we will clearly elucidate the underlying physical principles relating to the electromagnetic response of ordnance items, determine the fundamental physical limitations on ordnance/clutter discrimination using multisensors survey data, and devise effective multisensors processing schemes to discriminate between buried UXO and clutter using such data.

Download or read book Discrimination of Subsurface Unexploded Ordnance written by Kevin A. O'Neill and published by . This book was released on 2016 with total page 234 pages. Available in PDF, EPUB and Kindle. Book excerpt: Unexploded ordnance (UXO) pose a persistent and expensive problem throughout the world; over 11 million acres are potentially contaminated in the U.S. alone. However, detection requires a very high degree of reliability, the false alarm rate is typically enormous, and cleanup costs are very high. This Tutorial Text addresses the unique challenges of UXO detection and the following topics: fundamental physics and phenomenology; new, successful modeling and analysis methods; the design, development, and testing of new instruments that provide expanded and superior data; innovative processing techniques; and highly successful discrimination performance in blind field tests at standardized sites. The book is written for lay scientists and engineers, as well as specialists in the field, requiring only some familiarity with basic vector calculus and matrix methods, common statistical concepts, and elementary physics.

Download or read book XXXVe congr s Rapport pr sent par la direction du Parti Social D mocrate lue le 20 ao t 1945 fait au XXXV i me Congr s National du Parti 31 janvier 1947 3 f vrier 1947 written by and published by . This book was released on 1947 with total page 43 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book A Procedure for Locating and Identifying Buried Unexploded Ordnance Using Curve Fitting Techniques and Neural Network Pattern Classification written by David Daniel Clark and published by . This book was released on 2001 with total page 178 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Weapon Systems written by and published by . This book was released on with total page 312 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Discrimination Algorithms for the Remediation of Unexploded Ordnance written by and published by . This book was released on 2003 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: This thesis considers analysis of magnetic and electromagnetic data for the purpose of discriminating between buried unexploded ordnance (UXO) and non-hazardous metallic clutter. Magnetic data acquired over a ferrous object are modelled as a magnetostatic dipole. For time-domain electromagnetic data, a linear combination of decaying, orthogonal dipoles represents the secondary magnetic field radiated by a conductor. Model parameters estimated with inversion can be input into a discrimination algorithm whose output is a ranked diglist of targets. Algorithms that have been applied to UXO discrimination can be broadly categorized as library or statistical methods. Library methods assume that for each ordnance type there is a single set of parameters which is representative of intrinsic target properties. Statistical methods try to formulate a decision rule with a training set of models for targets with known ground truth. Observed data can sometimes have non-normally distributed noise and consequently parameter estimates obtained via least squares inversion may be biased. Robust misfit functions provide improved estimates of model parameters when there are outliers in the data. I also investigate propagation of uncertainties from data to model parameters. For inversion of electromagnetic data I find that parameters derived from the dipole model are approximately normally distributed. However, when data coverage is poor or SNR is low, the posterior distribution of these parameters may be multimodal. I develop a statistical classification algorithm that incorporates parameter uncertainty by integrating over the posterior probability distribution. Simulations and applications to real data indicate that this technique can detect outliers to the distribution of ordnance sooner than conventional classifiers. I quantify the performance of a discrimination algorithm using metrics derived from the receiver operating characteristic (ROC) curve. I use a bootstrapping algorithm to.

Download or read book Journal of Environmental Engineering Geophysics written by and published by . This book was released on 2001 with total page 244 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book The Leading Edge written by and published by . This book was released on 2006 with total page 820 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Unexploded Ordnance Detection and Mitigation written by James Byrnes and published by Springer Science & Business Media. This book was released on 2008-12-19 with total page 288 pages. Available in PDF, EPUB and Kindle. Book excerpt: The chapters in this volume were presented at the July–August 2008 NATO Advanced Study Institute on Unexploded Ordnance Detection and Mitigation. The conference was held at the beautiful Il Ciocco resort near Lucca, in the glorious Tuscany region of northern Italy. For the ninth time we gathered at this idyllic spot to explore and extend the reciprocity between mathematics and engineering. The dynamic interaction between world-renowned scientists from the usually disparate communities of pure mathematicians and applied scientists which occurred at our eight previous ASI’s continued at this meeting. The detection and neutralization of unexploded ordnance (UXO) has been of major concern for very many decades; at least since the First World war. UXO continues to be the subject of intensive research in many ?elds of science, incl- ing mathematics, signal processing (mainly radar and sonar) and chemistry. While today’s headlines emphasize the mayhem resulting from the placement of imp- vised explosive devices (IEDs), humanitarian landmine clearing continues to draw signi?cant global attention as well. In many countries of the world, landmines threaten the population and hinder reconstruction and fast, ef?cient utilization of large areas of the mined land in the aftermath of military con?icts.

Download or read book Weapon Systems written by United States. Army and published by . This book was released on 2000 with total page 334 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Targets and Backgrounds written by and published by . This book was released on 2006 with total page 328 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Transformational Science and Technology for the Current and Future Force written by John A. Parmentola and published by World Scientific Publishing Company. This book was released on 2006 with total page 604 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book provides the reader with a unique opportunity to understand the basic and applied research and technology areas that support applications to enable Transformational capabilities for US Soldiers. The research papers are in line with the theme of the 24th Army Science Conference: "Transformational Science and Technology for the Current and Future Force," emphasizing the critical role of Science and Technology in addressing the significant challenges posed by Global War On Terrorism while simultaneously developing Transformational capabilities for the Future Force.

Download or read book Weapon Systems written by and published by . This book was released on with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Internal Standardization and Calibration Architectures for Chemical Sensors written by Ronald E. Shaffer and published by SPIE-International Society for Optical Engineering. This book was released on 1999 with total page 348 pages. Available in PDF, EPUB and Kindle. Book excerpt: This work brings together a selection of papers dealing with various aspects of internal standardization and calibration architectures for chemical sensors.