Real Time Spectral Prediction And Metacognition For Spectrum Sharing Radar
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Real Time Spectral Prediction And Metacognition For Spectrum Sharing Radar
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Author : Jacob Kovarskiy
language : en
Publisher:
Release Date : 2021
Real Time Spectral Prediction And Metacognition For Spectrum Sharing Radar written by Jacob Kovarskiy and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2021 with categories.
The growing demand for radio frequency (RF) spectrum access poses new challenges for next-generation radar systems. Recent Federal Communications Commission (FCC) policies permit wireless communication networks to share the spectrum with incumbent radar systems. To operate in a crowded electromagnetic environment, radars must coexist with other RF emitters while maintaining system performance. The concept of cognitive RF provides robust and innovative solutions to efficiently share and build awareness of the spectrum. Cognition is actualized by the perception-action cycle (PAC) which iteratively senses RF interference (RFI), learns RFI behavior over time, and adapts the radar's frequency band of operation. New developments in software defined radio (SDR) technology have enabled complex cognitive systems to be realized on hardware in real-time. This work 1) presents a cognitive spectrum sharing implementation based on spectral prediction, 2) compares this implementation against radars employing alternative cognitive strategies, and 3) introduces a metacognition architecture to optimize a radar's cognitive strategy with respect to the environment. The spectral prediction approach enables the radar to learn a stochastic model describing RF activity. Using this model, the radar adapts waveform parameters in anticipation of changes in the spectrum. Spectral prediction is demonstrated in conjunction with pulsed linear frequency modulated chirp waveforms as well as notched noise waveforms for coexistence. Additionally, this predictive implementation is compared to reactive and reinforcement learning-based spectrum sharing strategies. Experiments demonstrate that these different cognitive strategies are well suited to particular RFI scenarios. This indicates a need for radars to intelligently adapt cognitive strategies in changing environments. The bio-inspired concept of metacognition provides a framework for cognitive radar to achieve this via self-monitoring and regulation of the PAC. Here, we describe an algorithm selection process aided by metacognition theory. To demonstrate the efficacy of spectral prediction and metacognition for radar, real-time SDR implementations are evaluated. A comprehensive set of synthetic RFI, emulated long-term evolution (LTE) RFI, and real measured RFI scenarios are used to characterize performance. These experiments measure the impact of RFI on radar processing and assess the relative performance improvements due to spectrum sharing. In measuring performance, a metric to characterize target detection quality is proposed based on the Jensen-Shannon divergence. Overall, this work presents a state-of-the-art review for cognitive RF, describes the theoretical background for each approach, details a real-time implementation for both predictive and metacognitive frameworks, and evaluates the performance of these implementations in a variety of RFI scenarios.
Cortex And Mind
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Author : Joaquin M. Fuster
language : en
Publisher: Oxford University Press
Release Date : 2005-08-25
Cortex And Mind written by Joaquin M. Fuster and has been published by Oxford University Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2005-08-25 with Medical categories.
This book presents a unique synthesis of the current neuroscience of cognition by one of the world's authorities in the field. The guiding principle to this synthesis is the tenet that the entirety of our knowledge is encoded by relations, and thus by connections, in neuronal networks of our cerebral cortex. Cognitive networks develop by experience on a base of widely dispersed modular cell assemblies representing elementary sensations and movements. As they develop cognitive networks organize themselves hierarchically by order of complexity or abstraction of their content. Because networks intersect profusely, sharing commong nodes, a neuronal assembly anywhere in the cortex can be part of many networks, and therefore many items of knowledge. All cognitive functions consist of neural transactions within and between cognitive networks. After reviewing the neurobiology and architecture of cortical networks (also named cognits), the author undertakes a systematic study of cortical dynamics in each of the major cognitive functions--perception, memory, attention, language, and intelligence. In this study, he makes use of a large body of evidence from a variety of methodologies, in the brain of the human as well as the nonhuman primate. The outcome of his interdisciplinary endeavor is the emergence of a structural and dynamic order in the cerebral cortex that, though still sketchy and fragmentary, mirrors with remarkable fidelity the order in the human mind.
Cognitive Radar
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Author : J. R. Guerci
language : en
Publisher: Artech House
Release Date : 2010
Cognitive Radar written by J. R. Guerci and has been published by Artech House this book supported file pdf, txt, epub, kindle and other format this book has been release on 2010 with Adaptive signal processing categories.
Chronicling the new field of cognitive radar (CR), this cutting-edge resource provides an accessible introduction to the theory and applications of CR, and presents a comprehensive overview of the latest developments in this emerging area. The first book on the subject, Cognitive Radar covers important breakthroughs in advanced radar systems, and offers new and powerful methods for combating difficult clutter environments. You find details on specific algorithmic and real-time high-performance embedded computing (HPEC) architectures. This practical book is supported with numerous examples that clarify key topics, and includes more than 370 equations.
Cognitive Dynamic Systems
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Author : Simon Haykin
language : en
Publisher: Cambridge University Press
Release Date : 2012-03-22
Cognitive Dynamic Systems written by Simon Haykin and has been published by Cambridge University Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2012-03-22 with Science categories.
A groundbreaking book from Simon Haykin, setting out the fundamental ideas and highlighting a range of future research directions.
The Origin Of Consciousness In The Breakdown Of The Bicameral Mind
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Author : Julian Jaynes
language : en
Publisher: Houghton Mifflin Harcourt
Release Date : 2000-08-15
The Origin Of Consciousness In The Breakdown Of The Bicameral Mind written by Julian Jaynes and has been published by Houghton Mifflin Harcourt this book supported file pdf, txt, epub, kindle and other format this book has been release on 2000-08-15 with Psychology categories.
National Book Award Finalist: “This man’s ideas may be the most influential, not to say controversial, of the second half of the twentieth century.”—Columbus Dispatch At the heart of this classic, seminal book is Julian Jaynes's still-controversial thesis that human consciousness did not begin far back in animal evolution but instead is a learned process that came about only three thousand years ago and is still developing. The implications of this revolutionary scientific paradigm extend into virtually every aspect of our psychology, our history and culture, our religion—and indeed our future. “Don’t be put off by the academic title of Julian Jaynes’s The Origin of Consciousness in the Breakdown of the Bicameral Mind. Its prose is always lucid and often lyrical…he unfolds his case with the utmost intellectual rigor.”—The New York Times “When Julian Jaynes . . . speculates that until late in the twentieth millennium BC men had no consciousness but were automatically obeying the voices of the gods, we are astounded but compelled to follow this remarkable thesis.”—John Updike, The New Yorker “He is as startling as Freud was in The Interpretation of Dreams, and Jaynes is equally as adept at forcing a new view of known human behavior.”—American Journal of Psychiatry
Fundamentals Of Cognitive Radio
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Author : Peyman Setoodeh
language : en
Publisher: John Wiley & Sons
Release Date : 2017-07-31
Fundamentals Of Cognitive Radio written by Peyman Setoodeh and has been published by John Wiley & Sons this book supported file pdf, txt, epub, kindle and other format this book has been release on 2017-07-31 with Technology & Engineering categories.
A comprehensive treatment of cognitive radio networks and the specialized techniques used to improve wireless communications The human brain, as exemplified by cognitive radar, cognitive radio, and cognitive computing, inspires the field of Cognitive Dynamic Systems. In particular, cognitive radio is growing at an exponential rate. Fundamentals of Cognitive Radio details different aspects of the human brain and provides examples of how it can be mimicked by cognitive dynamic systems. The text offers a communication-theoretic background, including information on resource allocation in wireless networks and the concept of robustness. The authors provide a thorough mathematical background with data on game theory, variational inequalities, and projected dynamic systems. They then delve more deeply into resource allocation in cognitive radio networks. The text investigates the dynamics of cognitive radio networks from the perspectives of information theory, optimization, and control theory. It also provides a vision for the new world of wireless communications by integration of cellular and cognitive radio networks. This groundbreaking book: Shows how wireless communication systems increasingly use cognition to enhance their networks Explores how cognitive radio networks can be viewed as spectrum supply chain networks Derives analytic models for two complementary regimes for spectrum sharing (open-access and market-driven) to study both equilibrium and disequilibrium behaviors of networks Studies cognitive heterogeneous networks with emphasis on economic provisioning for resource sharing Introduces a framework that addresses the issue of spectrum sharing across licensed and unlicensed bands aimed for Pareto optimality Written for students of cognition, communication engineers, telecommunications professionals, and others, Fundamentals of Cognitive Radio offers a new generation of ideas and provides a fresh way of thinking about cognitive techniques in order to improve radio networks.
Autonomous Horizons
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Author : Greg Zacharias
language : en
Publisher: Independently Published
Release Date : 2019-04-05
Autonomous Horizons written by Greg Zacharias and has been published by Independently Published this book supported file pdf, txt, epub, kindle and other format this book has been release on 2019-04-05 with categories.
Dr. Greg Zacharias, former Chief Scientist of the United States Air Force (2015-18), explores next steps in autonomous systems (AS) development, fielding, and training. Rapid advances in AS development and artificial intelligence (AI) research will change how we think about machines, whether they are individual vehicle platforms or networked enterprises. The payoff will be considerable, affording the US military significant protection for aviators, greater effectiveness in employment, and unlimited opportunities for novel and disruptive concepts of operations. Autonomous Horizons: The Way Forward identifies issues and makes recommendations for the Air Force to take full advantage of this transformational technology.
Cognitive Radio Networks
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Author : Yang Xiao
language : en
Publisher: CRC Press
Release Date : 2008-12-24
Cognitive Radio Networks written by Yang Xiao and has been published by CRC Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2008-12-24 with Computers categories.
Fueled by ongoing and increasing consumer demand, the explosive growth in spectrum-based communications continues to tax the finite resources of the available spectrum. One possible solution, Cognitive Radio Network (CRN), allows unlicensed users opportunistic access to licensed bands without interfering with existing users. Although some initial s
Artificial Cognition Architectures
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Author : James Crowder
language : en
Publisher: Springer Science & Business Media
Release Date : 2013-08-13
Artificial Cognition Architectures written by James Crowder and has been published by Springer Science & Business Media this book supported file pdf, txt, epub, kindle and other format this book has been release on 2013-08-13 with Technology & Engineering categories.
The goal of this book is to establish the foundation, principles, theory, and concepts that are the backbone of real, autonomous Artificial Intelligence. Presented here are some basic human intelligence concepts framed for Artificial Intelligence systems. These include concepts like Metacognition and Metamemory, along with architectural constructs for Artificial Intelligence versions of human brain functions like the prefrontal cortex. Also presented are possible hardware and software architectures that lend themselves to learning, reasoning, and self-evolution
Cognitive Computing And Information Processing
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Author : T.N. Nagabhushan
language : en
Publisher: Springer
Release Date : 2018-04-07
Cognitive Computing And Information Processing written by T.N. Nagabhushan and has been published by Springer this book supported file pdf, txt, epub, kindle and other format this book has been release on 2018-04-07 with Computers categories.
This book constitutes the refereed proceedings of the Third International Conference on Cognitive Computing and Information Processing, CCIP 2017, held in Bengaluru, India, in December 2017. The 43 revised full papers presented were carefully reviewed and selected from 130 submissions. The papers are organized in topical sections on cognitive computing in medical information processing; cognitive computing and its applications; cognitive computing in video analytics.