A Model For Space Radar Clutter
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A Model For Space Radar Clutter
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Author :
language : en
Publisher:
Release Date : 1979
A Model For Space Radar Clutter written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1979 with categories.
A model for radar clutter as encountered from a space-based platform is developed. Included in the model are land, sea and airborne clutter with emphasis on land clutter. Parametric fits to existing reflectivity data are performed for seven generic terrain types: desert, forest, mountain, rural, urban, snow and ice and sea. The fits are parametric in frequency and grazing angle and, in the case of sea clutter, polarization. In addition to the mean values of clutter reflectivity, the variation about the mean is emphasized. The underlying causes of clutter variability nonhomogeneous terrain type, terrain undulation, etc., are discussed. Quantitative estimates of their effects are presented. A theory of probability density function of clutter based on the resolution cell size, correlation lengths, and underlying statistics of individual scatterers, is presented. Examples are worked out for five terrain types and a large resolution cell. The results are threshold settings required for given false alarm probabilities. Clutter spectra are discussed briefly. Finally, requirements and computer simulations are examined with particular attention to the advantages and disadvantages of three candidate measurement programs.
A Clutter Model For Space Based Radar
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Author : Carl J. Lauer
language : en
Publisher:
Release Date : 1983
A Clutter Model For Space Based Radar written by Carl J. Lauer and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1983 with categories.
A clutter model for a pulse doppler space based radar simulation is described. Ground clutter is represented as a random process with mean power, mean doppler, and doppler spread determined from experimental measurements and from physical and geometrical quantities pertinent to the radar location, look angle, beam pattern, etc. The above three quantities are used to define the clutter spectrum observed at a given radar range gate, and a statistical signal generation technique is employed to generate a realization or sample of the instantaneous clutter signal observed.
Space Based Radar
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Author : S Pillai
language : en
Publisher: McGraw-Hill Education
Release Date : 2007-12-20
Space Based Radar written by S Pillai and has been published by McGraw-Hill Education this book supported file pdf, txt, epub, kindle and other format this book has been release on 2007-12-20 with Technology & Engineering categories.
The First Comprehensive Guide to the Principles, Design Methods, and Applications of Space Based Radar Turn to Space Based Radar for authoritative information on the latest developments in Space Based Radar (SBR), covering fundamental principles, cutting-edge design methods, and several new applications. This SBR guide focuses on clutter and target data generation from an SBR platform, and on Space Time Adaptive Processing (STAP) to enhance the target detection and the clutter cancellation capabilities of the radar system. Designed to save you hours of research time and effort, this one-stop resource explores the full range of SBR topics, including SBR footprint and range foldover phenomenon...Doppler shift that accounts for Earth's rotation...terrain modeling...STAP algorithms for enhanced target detection...and much more. Packed with over 250 full-color illustrations, Space Based Radar features: Complete coverage of the technical issues associated with SBR and their impact on system performance Website contains more than 250 PowerPoint slides for self-study or lectures, and problems and solutions. Inside This Pioneering SBR Sourcebook • Introducing Space Based Radar • The Conics • Two Body Orbital Motion and Kepler's Laws • SBR Kinematics • Space Time Adaptive Processing for Space Based Radar • Performance Analysis Using Cramer-Rao Bounds • Waveform Diversity
Analysis Of Space Based Radar Clutter Spectra Over Different Types Of Terrain And Their Effects On Detection Performance
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Author : D. Faubert
language : en
Publisher:
Release Date : 1986
Analysis Of Space Based Radar Clutter Spectra Over Different Types Of Terrain And Their Effects On Detection Performance written by D. Faubert and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1986 with categories.
A computer model was used to make a detailed analysis of the clutter spectra received by real aperture Space-Based Radars orbiting over different types of terrain. The influence of terrain on L-band SBR detection performance has also been studied. It was found that the clutter spectra tend to become narrower as the grazing ange of the antenna increases but that they broaden as the antenna points progressively more away from the direction of motion of the satellite. The interference caused by the clutter background is progressively higher for ice covered ground but smaller for a snow-covered terrain and the smallest for an ocean background. The minimum detectable velocities of the SBR were found to vary by a factor of up to three according to the terrain type. (Canada).
The Design And Implementation Of Radar Clutter Modelling And Adaptive Target Detection Techniques
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Author : Mohammed Hussain Ali
language : en
Publisher:
Release Date : 1990
The Design And Implementation Of Radar Clutter Modelling And Adaptive Target Detection Techniques written by Mohammed Hussain Ali and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1990 with Target acquisition categories.
Radar Reflectivity Of Land And Sea
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Author : Maurice W. Long
language : en
Publisher: Great Source Education Group
Release Date : 1975
Radar Reflectivity Of Land And Sea written by Maurice W. Long and has been published by Great Source Education Group this book supported file pdf, txt, epub, kindle and other format this book has been release on 1975 with Earth categories.
This state-of-the-art edition of a radar classic brings you up-to-date on new developments in clutter measurement and modeling and features a wealth of new information not found in other currently available books. Authored by a recognized expert in the field, the book covers everything from basic concepts of radar reflectivity to space-time clutter amplitude and bistatic clutter.
Radar Clutter Modeling
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Author : W. Blau
language : en
Publisher:
Release Date : 1968
Radar Clutter Modeling written by W. Blau and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1968 with categories.
A simulation method for the evaluation of radar performance in a clutter environment is explored. Three radar processors are tested on a common basis using measurement data in a theoretical model which displays both the spatial and frequency correlation properties of clutter. The effects of coherent, partially coherent, and specular scattering interacting with the radar processing are made evident. (Author).
Modeling Radar Clutter
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Author : David A. Sparrow
language : en
Publisher:
Release Date : 1991
Modeling Radar Clutter written by David A. Sparrow and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1991 with categories.
Radar detection of aircraft on a particular scan depends in large measure on the clutter return from the target's range cell. The distribution of clutter reflectivities is often so wide that variations of many dB in signature or threshold of detection correspond to changes of only a few percent in PD (probability of detection). Thus, where clutter variability is large, it must be included to avoid errors. However, large clutter variability when included will tend to overwhelm the uncertainties from other sources such as human performance. This may allow simplified treatment of these other sources. We find that the broad distribution of radar returns from environmental features leads to clutter limited detection probabilities that approach unity slowly as range decreases, rather than abruptly as in the noise limited case.
Radar Return From Targets Hidden By Ground Clutter
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Author : Werner W. Gerbes
language : en
Publisher:
Release Date : 1967
Radar Return From Targets Hidden By Ground Clutter written by Werner W. Gerbes and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1967 with Radar categories.
A theoretical solution to the problem of radar return from objects hidden by ground clutter is formulated in this report. The solution is based on a model in which metal targets are simulated by the substitution of metal for the ground. A comparison of the returned signal from the simulated target with the returned signal from the earth is obtained, and calculated values are graphically presented for various values of dielectric constants, conductivities, and depth of clutter. (Author).
A Study Of Radar Clutter
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Author : Euthimia T. Makris
language : en
Publisher:
Release Date : 1997
A Study Of Radar Clutter written by Euthimia T. Makris and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1997 with categories.