Download or read book Passive Underwater Target Tracking Using Bearings only Measurements written by Sanagapallea Koteswara Rao and published by LAP Lambert Academic Publishing. This book was released on 2012-06 with total page 196 pages. Available in PDF, EPUB and Kindle. Book excerpt: In this book, passive target tracking using bearings-only measurements is studied for several underwater applications. For submarine (ownship) to submarine (target) application, Pseudo Linear Estimator and its variants are developed for various situations. The algorithm is extended to Electronic Surveillance Measures in Electronic Warfare / Intercept sonar target tracking application, where the measurements are highly aperiodic. In underwater, prior information of the target motion parameters will not be available. Therefore, Pseudo Linear Estimator is developed in such a way to work without initialization of target state vector. As this does not require statistical characteristics of noise, this can be safely used as a back up algorithm, along with any variant of Kalman filter.

Download or read book Bearings Only Target Tracking Maneuvering Target written by Dimitrios Kourkoulis and published by . This book was released on 1984 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Artificial Intelligence and Evolutionary Computations in Engineering Systems written by Subhransu Sekhar Dash and published by Springer. This book was released on 2018-03-19 with total page 714 pages. Available in PDF, EPUB and Kindle. Book excerpt: The book is a collection of high-quality peer-reviewed research papers presented in the International Conference on Artificial Intelligence and Evolutionary Computations in Engineering Systems (ICAIECES 2017). The book discusses wide variety of industrial, engineering and scientific applications of the emerging techniques. Researchers from academia and industry have presented their original work and ideas, information, techniques and applications in the field of communication, computing and power technologies.

Download or read book An Adaptive Passive Underwater Tracking and Target Localization System written by R. A. Abate and published by . This book was released on 1964 with total page 96 pages. Available in PDF, EPUB and Kindle. Book excerpt: A target localization system utilizes a passive sonar tracking device to measure target relative bearing which is required for fire control. The parameters of the system depend on the ratio of power radiated from the target to noise power from other sources. Since this signal-to-noise ratio varies with time, the tracking system is describable by a linear differential equation with time-varying coefficients. The bearing data supplied to fire control is inherently contaminated with noise due to the method of processing raw data from the hydrophone array and due to transients which occur as signal-to-noise ratio changes. It is shown that improved fire control solutions result if each bearing is weighted by the inverse of the variance. A technique for computation of the variance of the bearings is developed. Implementation of the technique requires continuous measurement of the parameters of the tracking device. A computer for performing this measurement is discussed. Results of simulation studies are presented fr an adaptive target localization system which weights the bearing data as a function of computed variance. (Author).

Download or read book Underwater Signal and Data Processing written by Joseph C. Hassab and published by CRC Press. This book was released on 2018-01-18 with total page 374 pages. Available in PDF, EPUB and Kindle. Book excerpt: A systematic and integrated account of signal and data processing with emphasis on the distinctive marks of the ocean environment is provided in this informative text. Underwater problems such as space-time processing relations vs. disjointed ones, processing of passive observations vs. active ones, time delay estimation vs. frequency estimation, channel effects vs. transparent ones, integrated study of signal, data, and channel processing vs. separate ones, are highlighted. The book provides the beginner with a concise presentation of the essential concepts, defines the basic computational steps, and gives the mature reader an advanced view of underwater systems and the relationships among their building blocks. It presents the needed topics on applied estimation theory within the underwater systems context. Included are topics in linear and nonlinear filtering, spectral analysis, generalized correlation, cepstrum and complex demodulation, Cramer-Rao Bounds, maximum likelihood, weighted least-squares, Kalman filtering, expert systems, wave propagation and their use, as well as their performance in applications to canonical ocean problems. The applications center on the definition, analysis, and solution implementations to representative underwater signal analysis problems dealing with signals estimation, their location and motion. The potential limitations and pitfalls of the implementations are delineated in homogeneous, noisy, interfering, inhomogeneous, multipath, distortions, and/or dispersive channels.

Download or read book Target Tracking Based on Bearing Only Measurements written by Svein Fagerlund and published by . This book was released on 1980 with total page 127 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Methods and Applications for Modeling and Simulation of Complex Systems written by Wenhui Fan and published by Springer Nature. This book was released on 2022-12-23 with total page 639 pages. Available in PDF, EPUB and Kindle. Book excerpt: The two-volume set CCIS 1712 and 1713 constitutes the proceedings of the 21st Asian Simulation Conference, AsiaSim 2022, which took place in Changsha, China, in January 2023. Due to the Covid pandemic AsiaSim 2022 has been postponed to January 2023. The 97 papers presented in the proceedings were carefully reviewed and selected from 218 submissions. The contributions were organized in topical sections as follows: Modeling theory and methodology; Continuous system/discrete event system/hybrid system/intelligent system modeling and simulation; Complex systems and open, complex and giant systems modeling and simulation; Integrated natural environment and virtual reality environment modeling and simulation; Networked Modeling and Simulation; Flight simulation, simulator, simulation support environment, simulation standard and simulation system construction; High performance computing, parallel computing, pervasive computing, embedded computing and simulation; CAD/CAE/CAM/CIMS/VP/VM/VR/SBA; Big data challenges and requirements for simulation and knowledge services of big data ecosystem; Artificial intelligence for simulation; Application of modeling/simulation in science/engineering/society/economy /management/energy/transportation/life/biology/medicine etc; Application of modeling/simulation in energy saving/emission reduction, public safety, disaster prevention/mitigation; Modeling/simulation applications in the military field; Modeling/simulation applications in education and training; Modeling/simulation applications in entertainment and sports.

Download or read book Adaptive Target Tracking of Underwater Manoeuvering Targets Using Passive Measurements U written by Richard L. Moose and published by . This book was released on 1981 with total page 162 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Adaptive Target Tracking of Underwater Maneuvering Targets Using Passive Measurements written by Richard L. Moose and published by . This book was released on 1981 with total page 85 pages. Available in PDF, EPUB and Kindle. Book excerpt: This report examines the problem of adaptively tracking a maneuvering target in two dimensional space using passive time delay measurements. The target is free to maneuver in velocity and to make depth changes at times unknown to the observer. Tracking is accomplished by using the basic polar model of target and observer motion previously developed, and included in this report for the convenience of the reader. However, the important distinction is that now a nonlinear prefilter has been added to the tracking system. This leads to two major benefits: the first, is that the need for extended Kalman filters is completely eliminated which gives the tracking system a much a larger degree of robustness than it previously had. The second benefit is a decoupling of the depth estimator from the polar range estimator, which considerably reduces the computational level of the adaptive tracking system. (Author).

Download or read book Nonlinear Estimation written by Shovan Bhaumik and published by CRC Press. This book was released on 2019-07-24 with total page 254 pages. Available in PDF, EPUB and Kindle. Book excerpt: Nonlinear Estimation: Methods and Applications with Deterministic Sample Points focusses on a comprehensive treatment of deterministic sample point filters (also called Gaussian filters) and their variants for nonlinear estimation problems, for which no closed-form solution is available in general. Gaussian filters are becoming popular with the designers due to their ease of implementation and real time execution even on inexpensive or legacy hardware. The main purpose of the book is to educate the reader about a variety of available nonlinear estimation methods so that the reader can choose the right method for a real life problem, adapt or modify it where necessary and implement it. The book can also serve as a core graduate text for a course on state estimation. The book starts from the basic conceptual solution of a nonlinear estimation problem and provides an in depth coverage of (i) various Gaussian filters such as the unscented Kalman filter, cubature and quadrature based filters, Gauss-Hermite filter and their variants and (ii) Gaussian sum filter, in both discrete and continuous-discrete domain. Further, a brief description of filters for randomly delayed measurement and two case-studies are also included. Features: The book covers all the important Gaussian filters, including filters with randomly delayed measurements. Numerical simulation examples with detailed matlab code are provided for most algorithms so that beginners can verify their understanding. Two real world case studies are included: (i) underwater passive target tracking, (ii) ballistic target tracking. The style of writing is suitable for engineers and scientists. The material of the book is presented with the emphasis on key ideas, underlying assumptions, algorithms, and properties. The book combines rigorous mathematical treatment with matlab code, algorithm listings, flow charts and detailed case studies to deepen understanding.

Download or read book Acoustic Underwater Target Tracking Methods Using Autonomous Vehicles written by Ivan Masmitjà i Rusinyol and published by . This book was released on 2020 with total page 288 pages. Available in PDF, EPUB and Kindle. Book excerpt: Marine ecological research related to the increasing importance which the fisheries sector has reached so far, new methods and tools to study the biological components of our oceans are needed. The capacity to measure different population and environmental parameters of marine species allows a greater knowledge of the human impact, improving exploitation strategies of these resources. For example, the displacement capacity and mobility patterns are crucial to obtain the required knowledge for a sustainable management of fisheries.However, underwater localisation is one of the main problems which must be addressed in subsea exploration, where no Global Positioning System (GPS) is available. In addition to the traditional underwater localisation systems, such as Long BaseLine (LBL) or Ultra-Short BaseLine (USBL), new methods have been developed to increase navigation performance, flexibility, and to reduce deployment costs. For example, the Range-Only and Single-Beacon (ROSB) is based on an autonomous vehicle which localises and tracks different underwater targets using slant range measurements conducted by acoustic modems. In a moving target tracking scenario, the ROSB target tracking method can be seen as a Hidden Markov Model (HMM) problem. Using Bayes' rule, the probability distribution function of the HMM states can be solved by using different filtering methods. Accordingly, this thesis presents different strategies to improve the ROSB localisation and tracking methods for static and moving targets. Determining the optimal parameters to minimize acoustic energy use and search time, and to maximize the localisation accuracy and precision, is therefore one of the discussed aspects of ROSB. Thus, we present and compare different methods under different scenarios, both evaluated in simulations and field tests. The main mathematical notation and performance of each algorithm are presented, where the best practice has been derived. From a methodology point of view, this work advances the understanding of accuracy that can be achieved by using ROSB target tracking methods with autonomous vehicles.Moreover, whereas most of the work conducted during the last years has been focused on target tracking using acoustic modems, here we also present a novel method called the Area-Only Target Tracking (AOTT). This method works with commercially available acoustic tags, thereby reducing the costs and complexity over other tracking systems. These tags do not have bidirectional communication capabilities, and therefore, the ROSB techniques are not applicable. However, this method can be used to track small targets such as jellyfish due to the reduced tag's size. The methodology behind the area-only technique is shown, and results from the first field tests conducted in Monterey Bay area, California, are also presented.

Download or read book A Bayesian Approach to Passive Bearings Only Target Tracking written by R. S. Hebbert and published by . This book was released on 1987 with total page 25 pages. Available in PDF, EPUB and Kindle. Book excerpt: This target tracker updates the probability density in Cartesian coordinates after each observation. Bearing estimates from several sonobuoys are used simultaneously by the tracker. The target speed need not be constant, but is assumed to be bounded above. No assumption is made about the direction of motion of the target. The predicted pdf is propagated in time uniformly in all directions. The target track generated is the one that maximized the a posteriori density after each observations. Results of tests done on both real and simulated data are presented to demonstrate the tracking capabilities of this method. Keywords include: Cartesian coordinates; Sonobuoys; Bearing estimates; Target speed; and Target tracks.

Download or read book Microelectronics Electromagnetics and Telecommunications written by Jaume Anguera and published by Springer. This book was released on 2018-01-25 with total page 892 pages. Available in PDF, EPUB and Kindle. Book excerpt: The volume contains 94 best selected research papers presented at the Third International Conference on Micro Electronics, Electromagnetics and Telecommunications (ICMEET 2017) The conference was held during 09-10, September, 2017 at Department of Electronics and Communication Engineering, BVRIT Hyderabad College of Engineering for Women, Hyderabad, Telangana, India. The volume includes original and application based research papers on microelectronics, electromagnetics, telecommunications, wireless communications, signal/speech/video processing and embedded systems.

Download or read book Advances in Mechanical and Electronic Engineering written by David Jin and published by Springer Science & Business Media. This book was released on 2012-07-25 with total page 526 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book includes the volume 3 of the proceedings of the 2012 International Conference on Mechanical and Electronic Engineering(ICMEE2012), held at June 23-24,2012 in Hefei, China. The conference provided a rare opportunity to bring together worldwide researchers who are working in the fields. This volume 3 is focusing on Electronic Engineering and Electronic Communication; Electronic Engineering and Electronic Image Processing.

Download or read book Underwater Target Tracking Using Measurements from a Linear Array of Omnidirectional Acoustic Elements written by NAVAL UNDERWATER SYSTEMS CENTER NEWPORT RI. and published by . This book was released on 1981 with total page 63 pages. Available in PDF, EPUB and Kindle. Book excerpt: Tracking of underwater targets using measurements from a geometrically linear array of omnidirectional acoustic elements is a nonlinear estimation problem. The technique constructed and used in this report is an iterative, least-squares algorithm which uses the modified Gauss-Newton method. In this algorithm the search direction is found by applying a Householder transformation to the Gauss-Newton equations; the size of the step in this direction is found by minimizing a polynomial approximation to the performance index. The results show: the sign on the estimate of the target's depth cannot be uniquely determined, the Gauss-Newton method works as well as its modified version for these experiments, the problem is singular on the first leg, and the initialization of the algorithm influences convergence. (Author).

Download or read book Optimal Observer Trajectories for Passive Target Localization Using Bearing only Measurements written by Yaakov Oshman and published by . This book was released on 1996 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Underwater Acoustic Signal Processing written by Douglas A. Abraham and published by Springer. This book was released on 2019-02-14 with total page 860 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book provides comprehensive coverage of the detection and processing of signals in underwater acoustics. Background material on active and passive sonar systems, underwater acoustics, and statistical signal processing makes the book a self-contained and valuable resource for graduate students, researchers, and active practitioners alike. Signal detection topics span a range of common signal types including signals of known form such as active sonar or communications signals; signals of unknown form, including passive sonar and narrowband signals; and transient signals such as marine mammal vocalizations. This text, along with its companion volume on beamforming, provides a thorough treatment of underwater acoustic signal processing that speaks to its author’s broad experience in the field.