Download or read book Signal Denoising Techniques for Radar Target Detection written by Jami Venkata Suman and published by LAP Lambert Academic Publishing. This book was released on 2020-05-08 with total page 196 pages. Available in PDF, EPUB and Kindle. Book excerpt: Radar is an acronym for Radio Detection and Ranging. An object detection system that transmits electromagnetic waves and analyses the echoes coming from the objects. Radar can operate in any weather conditions (e.g. darkness, fog, rain). Radar can perform its function at short and long ranges. Radar can provide measurements in high accuracy. Radar signal processing can be defined as the manipulation of the received signal, represented in digital format, to extract the desired information whilst rejecting unwanted signals. In particular, a surveillance radar takes a decision about the presence or absence of targets whilst cancelling radar echoes caused by ground clutter, radio frequency interference and noise source.
Download or read book An Airborne Radar Technique for Moving target Detection Location and Tracking written by John K. Schindler and published by . This book was released on 1973 with total page 58 pages. Available in PDF, EPUB and Kindle. Book excerpt: A novel technique for detecting, locating, and tracking moving targets from an airborne radar platform is described and analyzed. The technique uses the generally dissimilar linear doppler frequency modulated signals from moving targets and stationary ground clutter. A matched filter processor is defined and its resolution and ambiguity properties studied as function processor parameters. Sub-clutter visibility of the processor is then determined. Two techniques for digitally implementing the processor are discussed and the computational efficiencies briefly analyzed. Finally, target angular position can be determined using phase monopulse. It is then shown that target velocity--both ground speed and target heading--can be determined from radar observables. (Author).
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 Nonlinear Signal Processing Schemes for Robust Target Detection in Radar written by and published by . This book was released on 1994 with total page 7 pages. Available in PDF, EPUB and Kindle. Book excerpt: In detection, the interference due to clutter or jamming can severely deteriorate the quality of the received signal to the point of concealing the target. The objective of this investigation is to improve detection in high density clutter or jamming by using nonlinear signal processing in conjunction with frequency diverse techniques. In particular, analysis and experimental studies have been concerned with the application of Order Statistic (OS) processing and Split Spectrum Processing (SSP) to detect target signals corrupted by strong clutter. The study of OS processing is also extended to morphological processors to improve signal-to-noise ratio (SNR) and feature extraction for recognition and classification. These studies have applications in radar, ultrasound, sonar, and imaging where clutter is the primary limiting factor.
Download or read book Target Recognition and Tracking for Millimeter Wave Radar in Intelligent Transportation written by Lin Cao and published by Springer Nature. This book was released on 2023-06-03 with total page 248 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book starts with the introduction of the radar working system from a mathematical point of view. It shows the composition of transmitted signal and echo signal, and describes the principle of speed measurement and distance measurement for different radar systems. The book focuses on millimeter-wave radar technologies related to echo signal denoising, target identification, clustering, and target tracking and develops a workable plan for the information fusion idea between millimeter-wave radar and machine vision. This book breaks down the systematic processing flow of millimeter-wave radar echo signals one by one from the standpoint of intelligent transportation, concentrating on the introduction of principles and reinforced by a plethora of experimental instances. So that readers from all relevant professions may comprehend millimeter-wave radar's involvement throughout the complete system process.
Download or read book Signal Processing Techniques for Modern Radar Systems written by Mostafa Kamal Kamel Elhoshy and published by . This book was released on 2019 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: This dissertation considers radar detection and tracking of weak fluctuating targets using dynamic programming (DP) based track-before-detect (TBD). TBD combines target detection and tracking by integrating data over consecutive scans before making a decision on the presence of a target. A novel algorithm is proposed which employs order statistics in dynamic programming based TBD (OS-DP-TBD) to detect weak fluctuating targets. The well-known Swerling type 0, 1 and 3 targets are considered with non-Gaussian distributed clutter and complex Gaussian noise. The clutter is modeled using the Weibull, K and G0 distributions. The proposed algorithm is shown to provide better performance than well-known techniques in the literature. In addition, a novel expanding window multiframe (EW-TBD) technique is presented to improve the detection performance with reasonable computational complexity compared to batch processing. It is shown that EW-TBD has lower complexity than existing multiframe processing techniques. Simulation results are presented which confirm the superiority of the proposed expanding window technique in detecting targets even when they are not present in every scan in the window. Further, the throughput of the proposed technique is higher than with batch processing. Depending on the range and azimuth resolution of the radar system, the target may appear as a point in some radar systems and there will be target energy spillover in other systems. This dissertation considers both extended targets with different energy spillover levels and point targets. Simulation results are presented which confirm the superiority of the proposed algorithm in both cases.
Download or read book Signal Processing in Noise Waveform Radar written by Krzysztof Kulpa and published by Artech House. This book was released on 2013-07-01 with total page 269 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book is devoted to the emerging technology of noise waveform radar and its signal processing aspects. It is a new kind of radar, which use noise-like waveform to illuminate the target. The book includes an introduction to basic radar theory, starting from classical pulse radar, signal compression, and wave radar. The book then discusses the properties, difficulties and potential of noise radar systems, primarily for low-power and short-range civil applications. The contribution of modern signal processing techniques to making noise radar practical are emphasized, and application examples are given.
Download or read book Radar Target Identification by Natural Resonances written by Gregory A. Lazarakos and published by . This book was released on 1991 with total page 99 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Advanced Radar Detection Schemes Under Mismatched Signal Models written by Francesco Bandiera and published by Morgan & Claypool Publishers. This book was released on 2009 with total page 106 pages. Available in PDF, EPUB and Kindle. Book excerpt: Adaptive detection of signals embedded in correlated Gaussian noise has been an active field of research in the last decades. This topic is important in many areas of signal processing such as, just to give some examples, radar, sonar, communications, and hyperspectral imaging. Most of the existing adaptive algorithms have been designed following the lead of the derivation of Kelly's detector which assumes perfect knowledge of the target steering vector. However, in realistic scenarios, mismatches are likely to occur due to both environmental and instrumental factors. When a mismatched signal is present in the data under test, conventional algorithms may suffer severe performance degradation. The presence of strong interferers in the cell under test makes the detection task even more challenging. An effective way to cope with this scenario relies on the use of "tunable" detectors, i.e., detectors capable of changing their directivity through the tuning of proper parameters. The aim of this book is to present some recent advances in the design of tunable detectors and the focus is on the so-called two-stage detectors, i.e., adaptive algorithms obtained cascading two detectors with opposite behaviors. We derive exact closed-form expressions for the resulting probability of false alarm and the probability of detection for both matched and mismatched signals embedded in homogeneous Gaussian noise. It turns out that such solutions guarantee a wide operational range in terms of tunability while retaining, at the same time, an overall performance in presence of matched signals commensurate with Kelly's detector. Table of Contents: Introduction / Adaptive Radar Detection of Targets / Adaptive Detection Schemes for Mismatched Signals / Enhanced Adaptive Sidelobe Blanking Algorithms / Conclusions
Download or read book Signal Processing for Radar Target Tracking and Identification written by Joseph Andrew O'Sullivan and published by . This book was released on 1996 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Distributed Signal Processing with Application to Constant False Alarm Rate Radar Target Detection written by Hamied Amirmehrabi and published by . This book was released on 1995 with total page 138 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Radar High Speed Target Detection Via Coherent Integration Transform written by Guolong Cui and published by . This book was released on 2024-11-14 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book offers a systematic presentation of high-speed radar target detection methods using coherent integration transforms, including the signal model, derivations of coherent integration transforms, and definitions of related key concepts. The authors present the mathematical models and design principles necessary to analyze the behavior of each type of coherent integration transforms, and based on this, they introduce and convey new approaches and techniques for designing such transforms, which will help to achieve efficient signal integrators and detectors, especially in the challenging low SNR environments. The book will be of interest to graduate students and engineering professionals in statistical signal processing, signal detection and estimation, and radar signal processing.
Download or read book Digital Signal Processing Techniques and Applications in Radar Image Processing written by Bu-Chin Wang and published by Wiley-Interscience. This book was released on 2008-08-18 with total page 376 pages. Available in PDF, EPUB and Kindle. Book excerpt: A self-contained approach to DSP techniques and applications in radar imaging The processing of radar images, in general, consists of three major fields: Digital Signal Processing (DSP); antenna and radar operation; and algorithms used to process the radar images. This book brings together material from these different areas to allow readers to gain a thorough understanding of how radar images are processed. The book is divided into three main parts and covers: DSP principles and signal characteristics in both analog and digital domains, advanced signal sampling, and interpolation techniques Antenna theory (Maxwell equation, radiation field from dipole, and linear phased array), radar fundamentals, radar modulation, and target-detection techniques (continuous wave, pulsed Linear Frequency Modulation, and stepped Frequency Modulation) Properties of radar images, algorithms used for radar image processing, simulation examples, and results of satellite image files processed by Range-Doppler and Stolt interpolation algorithms The book fully utilizes the computing and graphical capability of MATLAB® to display the signals at various processing stages in 3D and/or cross-sectional views. Additionally, the text is complemented with flowcharts and system block diagrams to aid in readers' comprehension. Digital Signal Processing Techniques and Applications in Radar Image Processing serves as an ideal textbook for graduate students and practicing engineers who wish to gain firsthand experience in applying DSP principles and technologies to radar imaging.
Download or read book Recent Advancements in Radar Imaging and Sensing Technology written by Piotr Samczynski and published by MDPI. This book was released on 2021-07-21 with total page 394 pages. Available in PDF, EPUB and Kindle. Book excerpt: The aim of this Printed Edition of Special Issue entitled "Recent Advancements in Radar Imaging and Sensing Technology” was to gather the latest research results in the area of modern radar technology using active and/or radar imaging sensing techniques in different applications, including both military use and a broad spectrum of civilian applications. As a result, the 19 papers that have been published highlighted a variety of topics related to modern radar imaging and microwave sensing technology. The sequence of articles included in the Printed Edition of Special Issue dealt with wide aspects of different applications of radar imaging and sensing technology in the area of topics including high-resolution radar imaging, novel Synthetic Apertura Radar (SAR) and Inverse SAR (ISAR) imaging techniques, passive radar imaging technology, modern civilian applications of using radar technology for sensing, multiply-input multiply-output (MIMO) SAR imaging, tomography imaging, among others.
Download or read book Signal to noise Threshold Ratio During Target Detection on a Reflecting Background written by L. B. Fuks and published by . This book was released on 1968 with total page 13 pages. Available in PDF, EPUB and Kindle. Book excerpt: The article presents the results of an analytical study of the radar signal-to-noise threshold ratio during target detection on a reflecting background. The radar system (in the average case) is reduced to a typical block diagram: a linear part, a detector, and an integrator. The linear part is characterized by the range selectivity. Thus, the computation of the signal-to-noise threshold leads to two well-known operations: (1) determination of the signal-noise ratio at the detector input, and (2) determination of the gain in the threshold signal owing to the post-detector processing. On the basis of such approximations, a simple formula is derived which determines the threshold ratio between reflecting properties of the target and the background. The analysis indicates that the additional gain in the threshold signal can be obtained only as a result of the intraperiodical post-detector integration; such integration is effective only in cases when the duration of the useful signal can be considerably increased, or if the correlation interval of the interference can be reduced without any change of resolution in respect to range. (Author).
Download or read book Advanced signal processing techniques in radiation detection and imaging written by Jian Dong and published by Frontiers Media SA. This book was released on 2023-12-26 with total page 148 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Compressive Sensing for Urban Radar written by Moeness Amin and published by CRC Press. This book was released on 2017-12-19 with total page 510 pages. Available in PDF, EPUB and Kindle. Book excerpt: With the emergence of compressive sensing and sparse signal reconstruction, approaches to urban radar have shifted toward relaxed constraints on signal sampling schemes in time and space, and to effectively address logistic difficulties in data acquisition. Traditionally, these challenges have hindered high resolution imaging by restricting both bandwidth and aperture, and by imposing uniformity and bounds on sampling rates. Compressive Sensing for Urban Radar is the first book to focus on a hybrid of two key areas: compressive sensing and urban sensing. It explains how reliable imaging, tracking, and localization of indoor targets can be achieved using compressed observations that amount to a tiny percentage of the entire data volume. Capturing the latest and most important advances in the field, this state-of-the-art text: Covers both ground-based and airborne synthetic aperture radar (SAR) and uses different signal waveforms Demonstrates successful applications of compressive sensing for target detection and revealing building interiors Describes problems facing urban radar and highlights sparse reconstruction techniques applicable to urban environments Deals with both stationary and moving indoor targets in the presence of wall clutter and multipath exploitation Provides numerous supporting examples using real data and computational electromagnetic modeling Featuring 13 chapters written by leading researchers and experts, Compressive Sensing for Urban Radar is a useful and authoritative reference for radar engineers and defense contractors, as well as a seminal work for graduate students and academia.
