Download or read book Radar Propagation at Low Altitudes written by Marion Littleton Meeks and published by Artech House Publishers. This book was released on 1982 with total page 130 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Radar Propagation at Low Altitudes written by Marion Littleton Meeks and published by . This book was released on 1981 with total page 131 pages. Available in PDF, EPUB and Kindle. Book excerpt: This report reviews the subject of electromagnetic wave propagation near the earth's surface as it relates to the detection of low-flying aircraft by ground-based radars. Separate sections describe how current knowledge of the three fundamental physical phenomena -- refraction, reflection, and diffraction -- is applied to the problems of low-altitude propagation. Simple models incorporating these phenomena are discussed: (1) propagation over a plane with arbitrary reflection coefficient, (2) propagation over a knife-edge on a plane, and (3) propagation over a smooth, spherical earth. Computer programs for models (2) and (3) are given in the Appendices. We include a bibliography of the literature on which this report is based: books, journal articles, and technical reports. References are listed alphabetically by first author, and subject indices are given for major subject headings. 0.
Download or read book Radar Propagation at Low Altitudes written by Marion L. Meeks and published by . This book was released on 1982-01-01 with total page 116 pages. Available in PDF, EPUB and Kindle. Book excerpt: This report reviews the subject of electromagnetic wave propagation near the earth's surface as it relates to the detection of low-flying aircraft by ground-based radars. Separate sections describe how current knowledge of the three fundamental physical phenomena -- refraction, reflection, and diffraction -- is applied to the problems of low-altitude propagation. Simple models incorporating these phenomena are discussed: (1) propagation over a plane with arbitrary reflection coefficient, (2) propagation over a knife-edge on a plane, and (3) propagation over a smooth, spherical earth. Computer programs for models (2) and (3) are given in the Appendices. We include a bibliography of the literature on which this report is based: books, journal articles, and technical reports. References are listed alphabetically by first author, and subject indices are given for major subject headings. 0.
Download or read book Radar Propagation at Low Altitudes written by M. L. Meeks and published by . This book was released on 1984 with total page 105 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Meteorological Aspects of Radio radar Propagation written by United States. Navy. Weather Research Facility and published by . This book was released on 1960 with total page 214 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Effects of Multipath Propagation on Low altitude Detect Pulsed doppler Radar Systems written by William V. Andrew and published by . This book was released on 1990 with total page 360 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Meteorological Aspects of Radio radar Propagation June 1960 written by United States. Naval Weapons Bureau and published by . This book was released on 1961 with total page 208 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Radar Propagation at low attitudes written by and published by . This book was released on 1982 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Low Altitude Near the Horizon Propagation written by Chi-Wei Wu and published by . This book was released on 1993 with total page 133 pages. Available in PDF, EPUB and Kindle. Book excerpt: Predictions of propagation loss made by the computer programs Radio Physical Optics (RPO) Computer Software Configuration Item (CSCI) and M-Layer are compared. The results of the high frequency parabolic equation approximation, as formulated in RPO, agree almost always with those derived from the low frequency modal computation as formulated in M-Layer. But at low altitudes in the neighborhood of the radar horizon, deviations between RPO and M-Layer become significant for some cases. RPO appears not to be able to properly account for the effects of a high altitude surface-based duct at a short range. Since the discrepancies fan in regions of importance to naval operations, a definitive resolution is an urgent task to be undertaken in the immediate future.
Download or read book Low Altitude Near the Horizon Propagation written by Chi-Wei Wu and published by . This book was released on 1993 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Predictions of propagation loss made by the computer programs Radio Physical Optics (RPO) Computer Software Configuration Item (CSCI) and M-Layer are compared. The results of the high frequency parabolic equation approximation, as formulated in RPO, agree almost always with those derived from the low frequency modal computation as formulated in M-Layer. But at low altitudes in the neighborhood of the radar horizon, deviations between RPO and M-Layer become significant for some cases. RPO appears not to be able to properly account for the effects of a high altitude surface-based duct at a short range. Since the discrepancies fan in regions of importance to naval operations, a definitive resolution is an urgent task to be undertaken in the immediate future.
Download or read book Flash Flood Forecasting Over Complex Terrain written by National Research Council and published by National Academies Press. This book was released on 2005-01-28 with total page 206 pages. Available in PDF, EPUB and Kindle. Book excerpt: The nation's network of more than 130 Next Generation Radars (NEXRADs) is used to detect wind and precipitation to help National Weather Service forecasters monitor and predict flash floods and other storms. This book assesses the performance of the Sulphur Mountain NEXRAD in Southern California, which has been scrutinized for its ability to detect precipitation in the atmosphere below 6000 feet. The book finds that the Sulphur Mountain NEXRAD provides crucial coverage of the lower atmosphere and is appropriately situated to assist the Los Angeles-Oxnard National Weather Service Forecast Office in successfully forecasting and warning of flash floods. The book concludes that, in general, NEXRAD technology is effective in mountainous terrain but can be improved.
Download or read book Radar Detection of Low Altitude Targets in a Maritime Environment Volume 1 Final Analysis written by and published by . This book was released on 1993 with total page 72 pages. Available in PDF, EPUB and Kindle. Book excerpt: Results from a unique analytical and measurement effort to assess low-altitude, short-range, radar detection capabilities in an evaporation ducting environment validate propagation model predictions of reduced radar detection ranges within the radio horizon. In addition, discrepancies between measured and predicted radar data demand a close examination of both meteorological data and surface layer theory. At ranges near and beyond the horizon, radar detection crucially depends both on the surface layer refractivity profile and on the adjacent mixed layer refractivity profile. A unified boundary layer model, an empirical model to merge the surface layer with the mixed layer, is described. Other discrepancies, which are thought to be caused either by inadequate surface layer modeling (perhaps the moisture stability function) or by inadequate boundary layer meteorological measurements, suggest the need for improvements in surface layer modeling and the need for new techniques to measure the refractivity structure. The combination of direct boundary layer (surface and mixed layer) meteorological measurements, remotely sensed radar measurements, and advanced numerical modeling capability provides valuable insight for a better understanding of the atmospheric boundary layer and its effects on the radar detection of low-altitude short-range targets.
Download or read book Radar Detection of Low Altitude Targets in a Maritime Environment Volume 2 Meteorological and Radar Data written by and published by . This book was released on 1993 with total page 172 pages. Available in PDF, EPUB and Kindle. Book excerpt: Results from a unique analytical and measurement effort to assess low-altitude short-range radar detection in an evaporation ducting environment validate propagation model predictions of reduced radar detection ranges within the radio horizon. Discrepancies between measured and predicted radar data demand a close examination of both meteorological data and surface layer theory. At ranges near and beyond the horizon, radar detection crucially depends both on the surface layer refractivity profile and on the adjacent mixed layer refractivity profile. An empirical model is described that merges the surface layer with the mixed layer, forming a unified boundary layer. Other discrepancies, which are thought to be caused either by inadequate surface layer modeling (perhaps the moisture stability function) or by inadequate boundary layer meteorological measurements, suggest the need for improvements in surface layer modeling and new techniques to measure the refractivity structure. The combination of direct boundary layer (surface and mixed layer) meteorological measurements, remotely sensed radar measurements, and advanced numerical modeling capability provides valuable insight for a better understanding of the atmospheric boundary layer and its effects on the radar detection of low- altitude short-range targets.
Download or read book Handbook of Radar Signal Analysis written by Bassem R. Mahafza and published by CRC Press. This book was released on 2021-08-17 with total page 706 pages. Available in PDF, EPUB and Kindle. Book excerpt: This new handbook on radar signal analysis adopts a deliberate and systematic approach. It uses a clear and consistent level of delivery while maintaining strong and easy-to-follow mathematical details. The emphasis of this book is on radar signal types and their relevant signal processing and not on radar systems hardware or components. This handbook serves as a valuable reference to a wide range of audience. More specifically, college-level students, practicing radar engineers, as well as casual readers of the subject are the intended target audience of the first few chapters of this book. As the book chapters progress, these grow in complexity and specificity. Accordingly, later chapters are intended for practicing engineers, graduate college students, and advanced readers. Finally, the last few chapters contain several special topics on radar systems that are both educational and scientifically entertaining to all readers. The presentation of topics in this handbook takes the reader on a scientific journey whose major landmarks comprise the different radar subsystems and components. In this context, the chapters follow the radar signal along this journey from its birth to the end of its life. Along the way, the different relevant radar subsystems are analyzed and discussed in great detail. The chapter contributors of this new handbook comprise experienced academia members and practicing radar engineers. Their combined years of academic and real-world experiences are in excess of 175. Together, they bring a unique, easy-to-follow mix of mathematical and practical presentations of the topics discussed in this book. See the "Chapter Contributors" section to learn more about these individuals.
Download or read book Propagation Engineering in Wireless Communications written by Abdollah Ghasemi and published by Springer Science & Business Media. This book was released on 2011-09-23 with total page 444 pages. Available in PDF, EPUB and Kindle. Book excerpt: Propagation Engineering in Wireless Communications covers the basic principles needed for understanding of radiowaves propagation for common frequency bands used in radio-communications. This book includes descriptions of new achievements and new developements in propagation models for wireless communication. The book is intended to bridge the gap between the theoretical calculations and approaches to the applied procedures needed for radio links design in a proper manner. The authors intention is to emphasize propagation engineering by giving sufficient fundamental information and then going on to explain the use of basic principles together with technical achievements in this field.
Download or read book Electromagnetic Propagation and Waveguides in Photonics and Microwave Engineering written by Patrick Steglich and published by BoD – Books on Demand. This book was released on 2020-10-21 with total page 194 pages. Available in PDF, EPUB and Kindle. Book excerpt: Optical and microwave waveguides have attracted much research interest in both science and industry. The number of potential applications for their use is growing rapidly. This book examines recent advances in the broad field of waveguide technology. It covers current progress and latest breakthroughs in emergent applications in photonics and microwave engineering. The book includes ten contributions on recent developments in waveguide technologies including theory, simulation, and fabrication of novel waveguide concepts as well as reviews on recent advances.
Download or read book Radar Equations for Modern Radar written by David Knox Barton and published by Artech House. This book was released on 2013 with total page 449 pages. Available in PDF, EPUB and Kindle. Book excerpt: Based on the classic Radar Range-Performance Analysis from 1980, this practical volume extends that work to ensure applicability of radar equations to the design and analysis of modern radars. This unique book helps you identify what information on the radar and its environment is needed to predict detection range. Moreover, it provides equations and data to improve the accuracy of range calculations. You find detailed information on propagation effects, methods of range calculation in environments that include clutter, jamming and thermal noise, as well as loss factors that reduce radar performance. This invaluable book is supported with nearly 200 illustrations and over 430 equations.
