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Multifrequency Measurements Of Radar Ground Clutter At 42 Sites Volume 3 Appendix E
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Book Synopsis Multifrequency Measurements of Radar Ground Clutter at 42 Sites. Volume 3: Appendix E. by :
Download or read book Multifrequency Measurements of Radar Ground Clutter at 42 Sites. Volume 3: Appendix E. written by and published by . This book was released on 1991 with total page 212 pages. Available in PDF, EPUB and Kindle. Book excerpt: This report determines how ground clutter strength varies with RF frequency from VHF to X-band in ground-sited radar. This determination is accomplished by providing extensive empirical results from multifrequency clutter measurements conducted at 42 different sites widely dispersed over the North American continent. These results indicate that the frequency dependence of ground clutter strength depends upon terrain type and can vary, for example, from a strongly decreasing function of frequency in forest to a strongly increasing function of frequency in farmland. Five major terrain categories are defined that encompass this dependence, namely, urban, mountains, forest, farmland, and desert. Within each terrain category, results are also shown to be dependent upon the relief or roughness of the terrain and upon the depression angle at which the terrain is illuminated. The depression angle dependence is important, even for the very low angles (typically within a degree of grazing incidence) and small (typically fractional) variations in angle that occur in ground-sited radar. This report presents specific clutter strength results at each of five frequencies (VHF, UHF, L-, S-, and X-band) from each of the 42 sites at which measurements were conducted. The report then combines results from similar sites to obtain the general dependence of clutter strength versus frequency for each terrain category. Clutter strengths are described in terms of moments (including the mean) and percentile levels (including the median) in measured clutter amplitude distributions resulting from cell-by-cell spatial variation over a selected large kilometer-sized macroregion of terrain at each site called the repeat sector.
Book Synopsis Multifrequency Measurements of Radar Ground Clutter at 42 Sites by : Lincoln Laboratory
Download or read book Multifrequency Measurements of Radar Ground Clutter at 42 Sites written by Lincoln Laboratory and published by . This book was released on 1991 with total page 292 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Multifrequency Measurements of Radar Ground Clutter at 42 Sites. Volume 2. Appendices A Through D. by :
Download or read book Multifrequency Measurements of Radar Ground Clutter at 42 Sites. Volume 2. Appendices A Through D. written by and published by . This book was released on 1991 with total page 125 pages. Available in PDF, EPUB and Kindle. Book excerpt: This report determines how ground clutter strength varies with RF frequency from VHF to X-Band in ground sited radar. This determination is accomplished by providing extensive empirical results from multifrequency clutter measurements conducted at 42 different sites widely dispersed over the North American continent. These results indicate that the frequency dependence of ground clutter strength depends upon terrain type and can vary, for example, from a strongly decreasing function of frequence in forest to a strongly increasing function of frequency in farmland. Five major terrain categories are defined that encompass this dependence, namely, urban, mountain, forest, farmland and desert. Within each terrain category results are also shown to be dependent upon the relief or roughness of the terrain and upon the depression angle at which the terrain is illuminated. The depression angle dependence is important even for the very low angles and small variations in angle that occur in ground-sited radar. This report presents specific clutter strength results at each of five frequencies (VHF, UHF, L-, S- and X-band) from each of 42 sites at which measurements were conducted. The report then combines results from similar sites to obtain the general dependence of clutter strength versus frequency for each terrain category.
Book Synopsis Multifrequency Measurements of Radar Ground Clutter at 42 Sites by : Lincoln Laboratory
Download or read book Multifrequency Measurements of Radar Ground Clutter at 42 Sites written by Lincoln Laboratory and published by . This book was released on 1991 with total page 116 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Multifrequency Measurements of Radar Ground Clutter at 42 Sites. Volume 1. Principal Results by :
Download or read book Multifrequency Measurements of Radar Ground Clutter at 42 Sites. Volume 1. Principal Results written by and published by . This book was released on 1991 with total page 251 pages. Available in PDF, EPUB and Kindle. Book excerpt: This report determines how ground clutter strength varies with RF frequency from VHF to X-band in ground-sited radar. These results indicate that the frequency dependence of ground clutter strength depends upon terrain type and can vary, for example, from a strongly decreasing function of frequency in forest to a strongly increasing function of frequency in farmland. Five major terrain categories are defined that encompass this dependence, namely, urban, mountains, forest, farmland, and desert. Within each terrain category, results are also shown to be dependent upon relief or roughness of the terrain and upon the depression angle at which the terrain is illuminated. The depression angle dependence is important, even for the very low angles (typically within a degree of grazing incidence) and small (typical fractional) variations in angle that occur in ground-sited radar. This report presents specific clutter strength results at each of five frequencies (VHF, UHF, L-, S-, and X-band) from each of the 42 sites at which measurements were conducted. The report then combines results from similar sites to obtain the general dependence of clutter strength versus frequency for each terrain category. clutter strengths are described in terms of moments (including the mean) and percentile levels (including the median) in measured clutter amplitude distributions resulting from cell-by-cell spatial variation over a selected large kilometer-sized macroregion of terrain at each site called the repeat sector. Measurements over the repeat sector at each site were repeated a number of times to increase the reliability of the results.
Book Synopsis Scientific and Technical Aerospace Reports by :
Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1992 with total page 1572 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Multifrequency Measurements of Radar Ground Clutter at 42 Sites by : J. Barrie Billingsley
Download or read book Multifrequency Measurements of Radar Ground Clutter at 42 Sites written by J. Barrie Billingsley and published by . This book was released on 1991 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Publisher :Elsevier ISBN 13 :0080950604 Total Pages :722 pages Book Rating :4.0/5 (89 download)
Download or read book written by and published by Elsevier. This book was released on with total page 722 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Low-Angle Radar Land Clutter by : J. Barrie Billingsley
Download or read book Low-Angle Radar Land Clutter written by J. Barrie Billingsley and published by William Andrew. This book was released on 2002-04-01 with total page 722 pages. Available in PDF, EPUB and Kindle. Book excerpt: A necessary reference for all radar engineers or analysts including many levels of managers, advisors and decision makers in the U.S. and worldwide radar industry. Directly useful in both military (DOD) and civilian (FAA) applications. The result of 20 years of research at MIT Lincoln Lab, this book is of the most significant tehcnological consequence for the industry. It actually solves the problem of low angle radar land clutter by showing the reader how to design and predict the performance of radars that operate in situations where land clutter prevalent. Radar land clutter constitutes the unwanted radar echoes returned from the earth's surface that compete against and interfere with the desired echoes returned by targets such as aircraft and other moving and stationary targets. The ability to accurately predict the effects of land clutter in surface radar has been an unsolved problem for many years. This book is comprehensive in addressing the topic, containing many interrelated results, each important in its own right. It unifies and integrates all the results so as to create a comprehensive, innovative, and unequaled work. The results of this book directly enable the reader to predict land clutter effects in surface radar. Modern military aircraft deliberately fly low to hide their presence from radars that are also dealing with land clutter. Depending on the terrain, the performance of the radar varies greatly from very good to very poor. This book helps radar engineers provide accurate assessments of ground clutter, thus bringing their ability to detect and operate against low flying aircraft to a much higher and much more consistent level.
Book Synopsis Government Reports Annual Index by :
Download or read book Government Reports Annual Index written by and published by . This book was released on 1992 with total page 1138 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Government Reports Announcements & Index by :
Download or read book Government Reports Announcements & Index written by and published by . This book was released on 1992 with total page 712 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Radar Ground Clutter Measurements and Models. Part 1. Spatial Amplitude Statistics by : J. B. Billingsley
Download or read book Radar Ground Clutter Measurements and Models. Part 1. Spatial Amplitude Statistics written by J. B. Billingsley and published by . This book was released on 1991 with total page 15 pages. Available in PDF, EPUB and Kindle. Book excerpt: At MIT Lincoln Laboratory, we have collected a large multifrequency data base of radar ground clutter measurements from many sites. We employ our clutter data to develop clutter models. Of particular interest to us is the site-specific prediction of PPI ground clutter maps for ground-sited radars, that is, in simulating the spatial variation of ground clutter. This paper describes our measurements, and presents a statistical clutter model for spatial amplitude statistics based on depression angle, terrain type, RF frequency, and radar resolution.
Download or read book Technical Abstract Bulletin written by and published by . This book was released on 1968 with total page 952 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Exponential Decay in Windblown Radar Ground Clutter Doppler Spectra by : J. Barrie Billingsley
Download or read book Exponential Decay in Windblown Radar Ground Clutter Doppler Spectra written by J. Barrie Billingsley and published by . This book was released on 1996 with total page 99 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Introduction to Radar Systems by : Merrill I. Skolnik
Download or read book Introduction to Radar Systems written by Merrill I. Skolnik and published by . This book was released on 1988 with total page 581 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Synthetic Impulse and Aperture Radar (SIAR) by : Baixiao Chen
Download or read book Synthetic Impulse and Aperture Radar (SIAR) written by Baixiao Chen and published by John Wiley & Sons. This book was released on 2014-04-14 with total page 438 pages. Available in PDF, EPUB and Kindle. Book excerpt: Analyzes and discusses the operating principle, signal processing method, and experimental results of this advanced radar technology This book systematically discusses the operating principle, signal processing method, target measurement technology, and experimental results of a new kind of radar called synthetic impulse and aperture radar (SIAR). The purpose is to help readers acquire an insight into the concept and principle of the SIAR, to know its operation mode, signal processing method, the difference between the traditional radar and itself, the designing ideals, and the developing method. It includes 10 chapters. Chapter 1 gives an introduction to the basic principle of SIAR and its characteristic of four antis. Chapter 2 introduces the operating principles and system constitution of SIAR. Chapter 3 presents the main waveforms and the corresponding signal processing methods. Chapter 4 is about the long-time integration technique. Chapter 5 shows the high-accuracy measurement and tracking of 4D parameters of target in SIAR. The range-angle coupling and decoupling are introduced in Chapter 6, where a criteria for transmit frequency optimization of array elements is studied to overcome the coupling among range, azimuth and elevation. In Chapter 7, detection and tracking of targets in strong interference background is investigated. Chapter 8 analyzes quantitatively the influence of array error on the tracking accuracy of SIAR. Expansion of impulse and aperture synthesis to HF band and microwave band are introduced respectively in Chapter 9 and Chapter 10. The operating principle of the novel bi-static surface wave radar system, as well as the experimental system and the experimental results are included in Chapter 9. Written by a highly experienced author with extensive knowledge of SIAR (Chen), the book can be used as a reference for engineering technical personnel and scientific research personnel working in the research of SIAR, MIMO radar, digital radar or other new type of radar. It can also be a reference for teachers and students in universities who engage in related professional work. Details the operating principle, signal processing method, target measurement technology, and experimental results of synthetic impulse and aperture radar (SIAR) Expands the technique of impulse and aperture synthesisfrom the VHF band to the HF band and the microwave band Written by a leading author with many years’ research and practical experience in sparse array SIAR, a typical MIMO radar Engineers, researchers and postgraduates working in radar engineering will find this an invaluable resource.
Book Synopsis Remote Sensing of the Terrestrial Water Cycle by : Venkataraman Lakshmi
Download or read book Remote Sensing of the Terrestrial Water Cycle written by Venkataraman Lakshmi and published by John Wiley & Sons. This book was released on 2014-10-31 with total page 572 pages. Available in PDF, EPUB and Kindle. Book excerpt: Remote Sensing of the Terrestrial Water Cycle is an outcome of the AGU Chapman Conference held in February 2012. This is a comprehensive volume that examines the use of available remote sensing satellite data as well as data from future missions that can be used to expand our knowledge in quantifying the spatial and temporal variations in the terrestrial water cycle. Volume highlights include: An in-depth discussion of the global water cycle Approaches to various problems in climate, weather, hydrology, and agriculture Applications of satellite remote sensing in measuring precipitation, surface water, snow, soil moisture, groundwater, modeling, and data assimilation A description of the use of satellite data for accurately estimating and monitoring the components of the hydrological cycle Discussion of the measurement of multiple geophysical variables and properties over different landscapes on a temporal and a regional scale
