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Innovations Based Detection Algorithm for Correlated Non-Gaussian Processes Using Multichannel Data

Innovations Based Detection Algorithm for Correlated Non-Gaussian Processes Using Multichannel Data
Author: Muralidhar Rangaswamy
Publisher:
Total Pages: 28
Release: 1993
Genre:
ISBN:

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This report addresses the problem of multichannel signal detection in additive, correlated, non-Gaussian noise using the innovations approach. While this problem has been addressed extensively for the case of additive Gaussian noise, the corresponding problem for the non-Gaussian case has received limited attention. This is due to the fact that there is no unique specification for the joint probability density function (PDF) of N correlated non-Gaussian random variables. We overcome this problem by using the theory of spherically invariant random processes (SIRP) and derive the innovations based detectors. It is found that the optimal estimators for obtaining the innovations processes are linear and that the resulting detector is canonical for the class of PDFs arising from SIRPs. Detection algorithms, Multichannel data. Non-Gaussian clutter, Statistics.


Adaptive Antennas and Receivers

Adaptive Antennas and Receivers
Author: Melvin M. Weiner
Publisher: CRC Press
Total Pages: 1240
Release: 2018-10-08
Genre: Technology & Engineering
ISBN: 1420026496

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In our modern age of remote sensing, wireless communication, and the nearly endless list of other antenna-based applications, complex problems require increasingly sophisticated solutions. Conventional antenna systems are no longer suited to high-noise or low-signal applications such as intrusion detection. Detailing highly effective approaches to non-Gaussian weak signal detection, Adaptive Antennas and Receivers provides an authoritative introduction to state-of-the-art research on the modeling, testing, and application of these technologies. Edited by innovative researcher and eminent expert Melvin M. Weiner, this book is the first to integrate three advanced approaches to non-Gaussian weak signal detection into a single reference: homogeneous partitioning of the surveillance volume, adaptive antennas, and adaptive receivers. Comprising self-contained chapters contributed by renowned experts such as Donald D. Weiner and Ronald Fante, each chapter explores the techniques, theoretical basis, and applications of the approach under discussion. The book considers signal detection in the presence of external noise such as clutter residue, interference, atmospheric noise, jammers, external thermal noise, in vivo surrounding tissue, and camouflaging material, making it ideal for use across a broad spectrum of applications. This authoritative reference supplies more than 750 figures and tables, 1460 equations, and 640 references. Adaptive Antennas and Receivers is an ideal resource for improving performance in surveillance, communication, navigation, artificial intelligence, computer tomography, neuroscience, and intrusion detection systems, to name only a few.


Scientific and Technical Aerospace Reports

Scientific and Technical Aerospace Reports
Author:
Publisher:
Total Pages: 700
Release: 1995
Genre: Aeronautics
ISBN:

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Lists citations with abstracts for aerospace related reports obtained from world wide sources and announces documents that have recently been entered into the NASA Scientific and Technical Information Database.


Academic Press Library in Signal Processing

Academic Press Library in Signal Processing
Author: Fulvio Gini
Publisher: Academic Press
Total Pages: 1389
Release: 2013-09-10
Genre: Technology & Engineering
ISBN: 0123972248

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This second volume, edited and authored by world leading experts, gives a review of the principles, methods and techniques of important and emerging research topics and technologies in communications and radar engineering. With this reference source you will: Quickly grasp a new area of research Understand the underlying principles of a topic and its application Ascertain how a topic relates to other areas and learn of the research issues yet to be resolved Quick tutorial reviews of important and emerging topics of research in array and statistical signal processing Presents core principles and shows their application Reference content on core principles, technologies, algorithms and applications Comprehensive references to journal articles and other literature on which to build further, more specific and detailed knowledge Edited by leading people in the field who, through their reputation, have been able to commission experts to write on a particular topic


Multichannel Detection of Partially Correlated Signals in Clutter

Multichannel Detection of Partially Correlated Signals in Clutter
Author: James H. Michels
Publisher:
Total Pages: 54
Release: 1992
Genre:
ISBN:

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This report considers the Gaussian multichannel binary detection problem in which the signal and non-white clutter noise are Gaussian vector processes with unknown statistics. A generalized likelihood ratio using multichannel innovations processes is implemented via a model-based approach where the signal and clutter are assumed to be characterized by autoregressive vector processes with arbitrary temporal and cross-channel correlation. The innovations processes are obtained through linear estimation using multichannel parameter estimates. Detection performance is considered as the estimates approach steadystate with increasing data block sample sizes. Results for two- channel signal and clutter noise vectors with various temporal and cross-channel correlation are obtained using a Monte-Carlo procedure. In the transient-state (estimation with limited data), the detection results are considered as a function of the data batch sizes used in parameter estimation. Furthermore, it is noted that the detection performance in the transient-state is related to that of the estimator which, in turn, has its own dependence upon process correlation. The results provide insight regarding the factors which control the processing time requirements to achieve a specified level of detection performance ... Detection, Multichannel processes, Estimation, Model-based detection, Innovations.


Government Reports Annual Index

Government Reports Annual Index
Author:
Publisher:
Total Pages: 1142
Release: 1995
Genre: Research
ISBN:

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Sections 1-2. Keyword Index.--Section 3. Personal author index.--Section 4. Corporate author index.-- Section 5. Contract/grant number index, NTIS order/report number index 1-E.--Section 6. NTIS order/report number index F-Z.


Multichannel Detection Using the Discrete-time Model-based Innovations Approach

Multichannel Detection Using the Discrete-time Model-based Innovations Approach
Author: James H. Michels
Publisher:
Total Pages: 384
Release: 1991
Genre: Signal theory (Telecommunication)
ISBN:

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This report makes several contributions. First, an approach is developed to synthesize multichannel autoregressive (AR) random processes allowing for the control of temporal and cross-channel correlation of the processes subject to specific constraints for realizable correlation sequences. Second, analytic expressions are developed for the error variance of time- averaged correlation function estimators for discrete, complex baseband processes. These expressions reveal the functional dependence of the error variance, not only on the window size of the observation interval, but also on fundamental characteristics of the observed processes. Third, model-based likelihood ratios are developed for the multichannel binary detection problem using error vector processes obtained through predicational error filtering operations. These ratios are derived assuming wide-sense stationarity of the baseband Gaussian processes. However, a more general likelihood ratio applicable for nonstationary bandpass processes is also developed. Fourth, the more general likelihood ratio utilized a more powerful estimator than previously noted.


Proceedings of the 2000 IEEE Sensor Array and Multichannel Signal Processing Workshop

Proceedings of the 2000 IEEE Sensor Array and Multichannel Signal Processing Workshop
Author: IEEE Signal Processing Society
Publisher: IEEE Standards Office
Total Pages: 564
Release: 2000
Genre: Technology & Engineering
ISBN:

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This work contains the proceedings of the Sensor Array and Multichannel Workshop held in the year 2000. It should be useful to researchers, professors, practitioners, students and professionals.