Download or read book Radar Target Detection in Non Gaussian Correlated Clutter written by Ben Cantrell and published by . This book was released on 1986 with total page 28 pages. Available in PDF, EPUB and Kindle. Book excerpt: A new processor for detecting a radar target in correlated, non-Gaussian clutter is obtained. When this processor and a matched filter are excited with this type of data, performance is improved over that of the matched filter alone. The processor is obtained by developing an approximate, multivariate, probability density for the clutter and constructing a Neyman-Pearson test. The processor is then obtained by using an approximation to the likelihood ratio obtained from the Neyman-Pearson test. Keywords include: Detection; radar signal processing; Radar.
Download or read book Signal Detection in Correlated Gaussian and Non Gaussian Radar Clutter written by and published by . This book was released on 1993 with total page 280 pages. Available in PDF, EPUB and Kindle. Book excerpt: The subject of this report is the detection of weak targets in a strong clutter environment. Two situations arise depending on whether or not the weak targets can be separated from the clutter. For both cases new receivers are derived which provide significant improvement in performance over other recently proposed techniques. This work includes development of an adaptive joint-domain space-time processor, effective non-gaussian weak signal detectors based on spherically invariant random processes, and a new method for approximating the underlying probability density function of random data which works extremely well with only 100 samples. Locally optimum detector, Spherically invariant, Random processes, Probability density function, Weak signal detector, Radar, Space-time processing, Clutter, Non-gaussian.
Download or read book High Resolution Radar Clutter Analysis and Modeling for Advanced Target Detection Strategies written by and published by . This book was released on 2007 with total page 48 pages. Available in PDF, EPUB and Kindle. Book excerpt: This report results from a contract tasking University of Pisa as follows: The research is divided in two phases. In the first phase, we consider modeling and estimating the characteristic parameters of high resolution non-Gaussian sea clutter. We will investigate specifically nonstationarity and possible non-Gaussianity of the clutter on long period of time, by applying nonhomogeneity tests and spectral analysis to highlight the temporal changes of the clutter process. The analyses of high resolution clutter will be performed by processing complex clutter data collected in November 1993 and in winter 1998 with the high resolution IPIX radar, provided by McMaster University, at a range resolution of 60 m, 30 m, 15 m, 9 m, and 3 m, in like- (HH-VV) and crosspolarizations (HV-VH) An accurate characterization of the high resolution radar clutter allows a more adequate design of the radar detector of targets. This detector needs to be adaptive to the data and should have the ability to comply with the non-homogeneous nature of the clutter interference. This aspect of the problem will be discussed in the second phase of this study. A detailed analysis of the impact of the nonstationarity of the clutter will be performed first analytically (where possible) and by means of simulations; then we will use the real recorded data to feed adaptive detectors, designed for stationary Gaussian and non-Gaussian clutter, and we will compare theoretical and simulated performance with real data performance.
Download or read book Coherent Detection of Radar Targets in K Distributed Correlated Clutter written by and published by . This book was released on 1988 with total page 19 pages. Available in PDF, EPUB and Kindle. Book excerpt: A processor is obtained for detecting a radar target in correlated, nonhomogeneous Gaussian (K-distributed) clutter. When this processor and a matched filter are excited with nonhomogeneous Gaussian data, the performance of the new processor exceeds that of the matched filter. The new processor was obtained by approximating the Neyman-Pearson test for this problem.
Download or read book Optimal Spectrum Filtering for the Radar Detection of Targets in Clutter written by John K. Schindler and published by . This book was released on 1969 with total page 52 pages. Available in PDF, EPUB and Kindle. Book excerpt: A novel radar technique is proposed for detecting the presence of a target having a priori known frequency-dependent scattering properties. The target coexists with a large collection of clutter elements having random scattering properties and ranges. Assuming a wideband random signal excitation, the power spectrum of the scattered field consists of the target return having an a priori known frequency behavior embedded in a clutter return having a random frequency dependence. On an ensemble average basis, the clutter appears as additive noise from which the existence of a prescribed target return must be extracted.
Download or read book Non gaussian Noise Models and Coherent Detection of Radar Targets written by Kevin Sangston (J.) and published by . This book was released on 1992 with total page 57 pages. Available in PDF, EPUB and Kindle. Book excerpt: The problem of detecting radar targets against a background of coherent, correlated non-Gaussian clutter is studied with a two-step procedure. In the first step, the structure of the multidimensional probability density function (PDF) describing the statistical properties of the clutter is derived. The starting point for this derivation is the basic scattering problem, and the statistics are determined from an extension of the Central Limit Theorem that is formulated and proved herein. Some basic mathematical properties of the resulting distributions are studied, and the problem of fitting data to such distributions is also discussed. The end product of the first step is a multidimensional PDF, which is then used in step 2 in the derivation of both the optimal and a suboptimal detection structure for detecting radar targets in this type of clutter. Performance results for the new detection processor are also given. Detectors, Radar, Non-Gaussian noise, Clutter.
Download or read book Novel Space Time Adaptive Processing Methods for Gaussian and Non Gaussian Radar Clutter written by and published by . This book was released on 2001 with total page 38 pages. Available in PDF, EPUB and Kindle. Book excerpt: Our work on this contract has four main thrusts. We addressed (1) the problem of optimal target detection of a rank one signal in additive non-Gaussian clutter modeled as a spherically invariant random process. Performance analysis of the optimal signal processor was carried out. However, practical implementation of the optimal processor requires know- ledge of the probability density function underlying the clutter, which is often unavailable. Hence, (2) we considered the performance of sub-optimum as well as ad-hoc approximations to the optimal processor. Next, (3) we concerned ourselves with the performance of parametric space-time adaptive processing methods in Gaussian interference and addressed issues of detection probability. constant false alarm rate and reduced training data support. Finally, (4) we provided a rigorous statistical analysis of the recently proposed non-homogeneity detector, which is useful for training data selection in STAP applications.
Download or read book Non gaussian Noise Models and Coherent Detection of Radar Targets written by Kevin Sangston (J.) and published by . This book was released on 1992 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: The problem of detecting radar targets against a background of coherent, correlated non-Gaussian clutter is studied with a two-step procedure. In the first step, the structure of the multidimensional probability density function (PDF) describing the statistical properties of the clutter is derived. The starting point for this derivation is the basic scattering problem, and the statistics are determined from an extension of the Central Limit Theorem that is formulated and proved herein. Some basic mathematical properties of the resulting distributions are studied, and the problem of fitting data to such distributions is also discussed. The end product of the first step is a multidimensional PDF, which is then used in step 2 in the derivation of both the optimal and a suboptimal detection structure for detecting radar targets in this type of clutter. Performance results for the new detection processor are also given. Detectors, Radar, Non-Gaussian noise, Clutter.
Download or read book Optimised Radar Processors written by Alfonso Farina and published by IET. This book was released on 1987 with total page 218 pages. Available in PDF, EPUB and Kindle. Book excerpt: Annotation The first volume in a new series. Contributed papers give a theory of radar signal processing at a level accessible and useful to practicing radar engineers concerned with design and analysis. No index. Annotation(c) 2003 Book News, Inc., Portland, OR (booknews.com)
Download or read book Radar Target Detection written by Daniel Meyers and published by Elsevier. This book was released on 2012-12-02 with total page 513 pages. Available in PDF, EPUB and Kindle. Book excerpt: Radar Target Detection: Handbook of Theory and Practice covers a set of graphical solutions to the detection problem, designated as Meyer Plots, for radar systems design. A radar system's major purpose is the detection and location of an object by means of a return signal, which could be either a reflection or a beacon. This book is composed of four chapters. Chapter 1 presents the basic radar range equation, which is the basic relationship which permits the calculation of echo signal strength from measurable or known parameters of the radar transmitter, antenna, propagation path, and target. Chapter 2 provides examples for determining statistical signal detection using Meyer Plots, particularly for determining detection probability and integration loss and efficiency. Chapter 3 describes the application of target models to determination of detection probability. Chapter 4 examines how Meyer Plots can be used to solve problems involving most any target model.
Download or read book Sea Clutter written by Keith Ward and published by IET. This book was released on 2013-04-22 with total page 584 pages. Available in PDF, EPUB and Kindle. Book excerpt: The second edition of Sea Clutter: Scattering, the K Distribution and Radar Performance gives an authoritative account of our current understanding of radar sea clutter. Topics covered include the characteristics of radar sea clutter, modelling radar scattering by the ocean surface, statistical models of sea clutter, the simulation of clutter and other random processes, detection of small targets in sea clutter, imaging ocean surface features, radar detection performance calculations, CFAR detection, and the specification and measurement of radar performance. The calculation of the performance of practical radar systems is presented in sufficient detail for the reader to be able to tackle related problems with confidence. For this fully revised and updated second edition new material has been added on the Doppler characteristics of sea clutter and associated detection processing methods, bistatic sea clutter measurements; electromagnetic scattering theory of littoral sea clutter and bistatic sea clutter; the use of models for predicting radar performance, including discussion of Lognormal and Weibull models; further results and extended discussion on the modelling of the K distribution shape parameter for different conditions; the simulation of Doppler spectra of sea clutter; high grazing angle scattering; and the use of the K distribution in other fields. The material has been reorganized into four parts: Sea Clutter Properties, Mathematics of the K distribution, Radar Detection and Physical Modelling. This reorganization allows readers to access specific areas quickly, without the need for an extensive knowledge of the other parts.
Download or read book Generation and Simulation of Clutter for RADAR Testing Using FPGA written by Pardhu Thottempudi and published by LAP Lambert Academic Publishing. This book was released on 2015-06-30 with total page 124 pages. Available in PDF, EPUB and Kindle. Book excerpt: Detection of weak target echo in the presence of strong clutter is the main objective of any RADAR. To evaluate the performance of RADAR it is required to generate the clutter of various types including land and sea. This clutter is of non Gaussian distribution such as lognormal, Weibull and k-type. In this book it is proposed to develop a clutter generation algorithm of given distribution type. This process consists of random number generator with Gaussian distribution converting into a non Gaussian using ZMNL (Zero Memory Nonlinearity Transformation) technique. It also includes amplitude shaping and addition other interference signals.
Download or read book Adaptive Antennas and Receivers written by Melvin M. Weiner and published by CRC Press. This book was released on 2018-10-08 with total page 1240 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.
Download or read book Academic Press Library in Signal Processing written by Fulvio Gini and published by Academic Press. This book was released on 2013-09-10 with total page 1389 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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
Download or read book Spatial Polarization Characteristics of Radar Antenna written by Huanyao Dai and published by Springer. This book was released on 2018-06-20 with total page 331 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book presents novel research ideas and offers insights into radar system design, artificial intelligence and signal processing applications. Further, it proposes a new concept of antenna spatial polarization characteristics (SPC), suggesting that the antenna polarization is a function of the spatial direction and providing new ideas for radar signal processing (RSP) and anti-jamming. It also discusses the design of an advanced signal-processing algorithm, and proposes new polarimetric and anti-jamming methods using antenna inherent properties. The book helps readers discover the potential of radar information processing and improve its anti-interference and target identification ability. It is of interest to university researchers, radar engineers and graduate students in computer science and electronics who wish to learn the core principles, methods, algorithms, and applications of RSP.
Download or read book Sea Clutter written by Keith D. Ward and published by Institution of Engineering & Technology. This book was released on 2006-06-21 with total page 480 pages. Available in PDF, EPUB and Kindle. Book excerpt: Sea Clutter: Scattering, the K Distribution and Radar Performance examines the statistics of radar scattering from the sea surface in terms of their relevance to radar operating in a maritime environment; including remote sensing, surveillance and targeting applications. A lot of the work in the book is based on the compound Kdistribution model for the amplitude statistics of sea clutter. In addition, the book addresses the specification of performance required by customers and the measurement of performance of systems supplied to customers.
Download or read book Encyclopedia of Computer Science and Technology written by Allen Kent and published by CRC Press. This book was released on 1995-07-26 with total page 424 pages. Available in PDF, EPUB and Kindle. Book excerpt: Case-Based Reasoning to User Interface Software Tools
