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Airborne Pulsed Doppler Radar
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Book Synopsis Airborne Pulsed Doppler Radar by : Guy V. Morris
Download or read book Airborne Pulsed Doppler Radar written by Guy V. Morris and published by Artech House Publishers. This book was released on 1988 with total page 464 pages. Available in PDF, EPUB and Kindle. Book excerpt: Presents the basic principles of pulse-doppler radar without resorting to a heavily mathematical treatment. High-, medium-, and low-pulse repetition frequency (PRF) modes are explained and the advantages and disadvantages of each are discussed. Also included are an explanation of the major signal-processing functions of doppler filtering, pulse compression, tracking, synthetic aperture, selection of medium PRFs, and resolving range ambiguities and a discussion of how to predict the performance of a pulse-doppler radar in the presence of noise and clutter. Annotation copyrighted by Book News, Inc., Portland, OR
Book Synopsis Pulse Doppler Radar by : Clive Alabaster
Download or read book Pulse Doppler Radar written by Clive Alabaster and published by IET. This book was released on 2012-06-30 with total page 427 pages. Available in PDF, EPUB and Kindle. Book excerpt: The book is organized into three parts, each one building on the material of the previous sections. Part I (Chapters 1-8) covers the basic principles to lay sound foundations for the following parts of the book. It emphasizes classic processing techniques, especially the fast Fourier transform (FFT), and microwave engineering issues, antennas, and hardware. The second part of the book deals with the theory and techniques specific to pulse Doppler radar. This is subdivided into Part IIA (Chapters 9-10), which covers high PRF pulse Doppler, and Part IIB (Chapters 11-15), which covers medium PRF pulse Doppler. A major theme is that of PRF selection and optimization, other waveform design issues, and the problem of ghosting. While high and medium PRF pulse Doppler techniques have become synonymous with airborne fire control radars, they are used over a broad spectrum of airborne and surface-based radar applications. Part II does emphasize the airborne radar case, but it does not neglect the surface-based radar. Finally, Part III (Chapters 16-19) presents a series of four case studies. Each of these case studies applies the material of Part II whilst also highlighting additional radar techniques (and, in some cases, non-radar considerations) specific to the application. Such is the prevalence of pulse Doppler radars today; the number of case studies that could have been considered is well into double figures. However, the four presented here suffice to illustrate the wide variety of pulse Doppler radar applications.
Book Synopsis Introduction to Airborne Radar by : George W. Stimson
Download or read book Introduction to Airborne Radar written by George W. Stimson and published by SciTech Publishing. This book was released on 1998 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: An introduction to the subject for non-specialists: engineers, technicians, pilots, and aerospace industry marketing, public relations, and customer support personnel. Also a reference for specialists in the field. The completely rewritten and revised Second Edition updates the original published by the Hughes Aircraft Company.
Book Synopsis Designing Clutter Rejection Filters with Complex Coefficients for Airborne Pulsed Doppler Weather Radar by : Dennis A. Jamora
Download or read book Designing Clutter Rejection Filters with Complex Coefficients for Airborne Pulsed Doppler Weather Radar written by Dennis A. Jamora and published by . This book was released on 1993 with total page 92 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Introduction to Airborne Radar by : George W. Stimson
Download or read book Introduction to Airborne Radar written by George W. Stimson and published by SciTech Publishing. This book was released on 1998 with total page 600 pages. Available in PDF, EPUB and Kindle. Book excerpt: An introduction to the subject for non-specialists: engineers, technicians, pilots, and aerospace industry marketing, public relations, and customer support personnel. Also a reference for specialists in the field. The completely rewritten and revised Second Edition updates the original published by the Hughes Aircraft Company.
Author :National Aeronautics and Space Administration (NASA) Publisher :Createspace Independent Publishing Platform ISBN 13 :9781722941369 Total Pages :142 pages Book Rating :4.9/5 (413 download)
Book Synopsis Analysis and Improved Design Considerations for Airborne Pulse Doppler Radar Signal Processing in the Detection of Hazardous Windshear by : National Aeronautics and Space Administration (NASA)
Download or read book Analysis and Improved Design Considerations for Airborne Pulse Doppler Radar Signal Processing in the Detection of Hazardous Windshear written by National Aeronautics and Space Administration (NASA) and published by Createspace Independent Publishing Platform. This book was released on 2018-07-18 with total page 142 pages. Available in PDF, EPUB and Kindle. Book excerpt: High resolution windspeed profile measurements are needed to provide reliable detection of hazardous low altitude windshear with an airborne pulse Doppler radar. The system phase noise in a Doppler weather radar may degrade the spectrum moment estimation quality and the clutter cancellation capability which are important in windshear detection. Also the bias due to weather return Doppler spectrum skewness may cause large errors in pulse pair spectral parameter estimates. These effects are analyzed for the improvement of an airborne Doppler weather radar signal processing design. A method is presented for the direct measurement of windspeed gradient using low pulse repetition frequency (PRF) radar. This spatial gradient is essential in obtaining the windshear hazard index. As an alternative, the modified Prony method is suggested as a spectrum mode estimator for both the clutter and weather signal. Estimation of Doppler spectrum modes may provide the desired windshear hazard information without the need of any preliminary processing requirement such as clutter filtering. The results obtained by processing a NASA simulation model output support consideration of mode identification as one component of a windshear detection algorithm. Lee, Jonggil Unspecified Center AIRBORNE EQUIPMENT; DETECTION; HAZARDS; METEOROLOGICAL RADAR; PULSE DOPPLER RADAR; SIGNAL PROCESSING; STATISTICAL ANALYSIS; WEATHER; WIND SHEAR; WIND VELOCITY; ALGORITHMS; CLUTTER; ERRORS; ESTIMATES; ESTIMATING; HIGH RESOLUTION; LOW ALTITUDE; LOW FREQUENCIES; SIMULATION; SPECTRA...
Book Synopsis Air and Spaceborne Radar Systems by : Philippe Lacomme
Download or read book Air and Spaceborne Radar Systems written by Philippe Lacomme and published by William Andrew. This book was released on 2001 with total page 528 pages. Available in PDF, EPUB and Kindle. Book excerpt: Intended for actual users of radar, the book focuses on the history, main principles, functions, modes, properties and specific nature of modern airborne radar. It examines radar's role within the system when carrying out its assigned missions, showing the possibilities of radar, it's limitations and a discussion of how radar may evolve in the future.
Book Synopsis Stimson's Introduction to Airborne Radar by : George W. Stimson
Download or read book Stimson's Introduction to Airborne Radar written by George W. Stimson and published by Scitech Publishing. This book was released on 2014 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Greatly expanded from the best-selling second edition by George W.Stimson, this book offers a complete overview of the major developments in air and spaceborne radar in line with advances in modern technology.
Author :National Aeronautics and Space Adm Nasa Publisher :Independently Published ISBN 13 :9781731004505 Total Pages :96 pages Book Rating :4.0/5 (45 download)
Book Synopsis Users Guide for an Airborne Windshear Doppler Radar Simulation (Awdrs) Program by : National Aeronautics and Space Adm Nasa
Download or read book Users Guide for an Airborne Windshear Doppler Radar Simulation (Awdrs) Program written by National Aeronautics and Space Adm Nasa and published by Independently Published. This book was released on 2018-11-08 with total page 96 pages. Available in PDF, EPUB and Kindle. Book excerpt: A description is provided of the Airborne Windshear Doppler Radar Simulation (AWDRS) program developed for NASA-Langley by the Research Triangle Institute. The radar simulation program is a comprehensive calculation of the signal characteristics and expected outputs of an airborne coherent pulsed Doppler radar system viewing a low level microburst along or near the approach path of the aircraft. The detailed nature of the simulation permits the quick evaluation of proposed trade-offs in radar system parameters and the evaluation of the performance of proposed configurations in various microburst/clutter environments. The simulation also provides a test bed for various proposed signal processing techniques for minimizing the effects of noise, phase jitter, and ground clutter and maximizing the useful information derived for avoidance of microburst windshear by aircraft. Britt, Charles L. Unspecified Center...
Book Synopsis The Pulse-pair Algorithm as a Robust Estimator of Turbulent Weather Spectral Parameters Using Airborne Pulse Doppler Radar by : Ernest Granville Baxa
Download or read book The Pulse-pair Algorithm as a Robust Estimator of Turbulent Weather Spectral Parameters Using Airborne Pulse Doppler Radar written by Ernest Granville Baxa and published by . This book was released on 1991 with total page 44 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Airborne Radar by : Donald J. Povejsil
Download or read book Airborne Radar written by Donald J. Povejsil and published by . This book was released on 1961 with total page 856 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Radar and EW Modeling in MATLAB and Simulink by : Carlos A. Dávila
Download or read book Radar and EW Modeling in MATLAB and Simulink written by Carlos A. Dávila and published by Artech House. This book was released on 2023-10-31 with total page 503 pages. Available in PDF, EPUB and Kindle. Book excerpt: This resource covers basic concepts and modeling examples for the three “pillars” of EW: Electronic Attack (EA) systems, Electronic Protection (EP) techniques, and Electronic Support (ES). It develops techniques for the modeling and simulation (M&S) of modern radar and electronic warfare (EW) systems and reviews radar principles, including the radar equation. M&S techniques are introduced, and example models developed in MATLAB and Simulink are presented and discussed in detail. These individual models are combined to create a full end-to-end engineering engagement simulation between a pulse-Doppler radar and a target. The radar-target engagement model is extended to include jamming models and is used to illustrate the interaction between radar and jamming signals and the impact on radar detection and tracking. In addition, several classic EA techniques are introduced and modeled, and the effects on radar performance are explored. This book is a valuable resource for engineers, scientists, and managers who are involved in the design, development, or testing of radar and EW systems. It provides a comprehensive overview of the M&S techniques that are used in these systems, and the book's many examples and case studies provide a solid foundation for understanding how these techniques can be applied in practice.
Book Synopsis Nonlinear Suppression of Range Ambiguity in Pulse Doppler Radar by : Jon M. Anderson
Download or read book Nonlinear Suppression of Range Ambiguity in Pulse Doppler Radar written by Jon M. Anderson and published by . This book was released on 2001-12 with total page 146 pages. Available in PDF, EPUB and Kindle. Book excerpt: Coherent pulse train processing is most commonly used in airborne pulse Doppler radar, achieving adequate transmitter/receiver isolation and excellent resolution properties while inherently inducing ambiguities in Doppler and range. First introduced by Palermo in 1962 using two conjugate LFM pulses, the primary nonlinear suppression objective involves reducing range ambiguity, given the waveform is nominally unambiguous in Doppler, by using interpulse and intrapulse coding (pulse compression) to discriminate received ambiguous pulse responses. By introducing a nonlinear operation on compressed (undesired) pulse responses within individual channels, ambiguous energy levels are reduced in channel outputs. This research expands the NLS concept using discrete coding and processing. A general theory is developed showing how NLS accomplishes ambiguity surface volume removal without requiring orthogonal coding. Useful NLS code sets are generated using combinatorial, simulated annealing optimization techniques - a general algorithm is developed to extended family size, code length, and number of phases (polyphase coding). An adaptive reserved code thresholding scheme is introduced to efficiently and effectively track the matched filter response of a target field over a wide dynamic range, such as normally experienced in airborne radar systems. An evaluation model for characterizing NLS clutter suppression performance is developed - NLS performance is characterized using measured clutter data with analysis indicating the proposed technique performs relatively well even when large clutter cells exist.
Book Synopsis The Feasibility of Detecting Shock Waves by Pulse Doppler Radar by : Kenneth M. Glover
Download or read book The Feasibility of Detecting Shock Waves by Pulse Doppler Radar written by Kenneth M. Glover and published by . This book was released on 1966 with total page 40 pages. Available in PDF, EPUB and Kindle. Book excerpt: Classical geometric optics estimates of the echo characteristics from both isotropic and directed acoustic shocks are presented together with the detection capability of a typical sensitive pulse Doppler radar (AFCRL Porcupine Doppler) in order to determine the feasibility of detecting large well defined boundaries of refractive index. Both the radar cross-section and the Doppler spectrum of an acoustic shock are sensitive to wind and temperature induced perturbations of the shock surface. For standard deviations in wind and temperature of 0.5 m/sec and 1C, the theoretical values of the maximum radar cross-section and minimum Doppler spectral width of a typical directed shock of 50 meters radius are found to be 0.0008 sq cm and 58 cps respectively. This target cross-section is about 6 dB stronger than the minimum cross-section detectable by the Porcupine radar at a range of only 1.8 kilometers. At this range, the presence of a weak signal may be completely masked by the presence of strong ground clutter signals. Signal processing techniques which improve the mean square to noise ratio and provide sub-clutter visibility are therefore crucial to the success of the experiment. Moreover, the sensitivity of the radar cross-section and the Doppler spectrum to wind and temperature perturbations restricts the experiments to calm conditions. (Author).
Book Synopsis A 10 Cm Dual Frequency Doppler Weather Radar by : Alexander W. Bishop
Download or read book A 10 Cm Dual Frequency Doppler Weather Radar written by Alexander W. Bishop and published by . This book was released on 1982 with total page 48 pages. Available in PDF, EPUB and Kindle. Book excerpt: Design concepts and test results are summarized for a Doppler weather radar system suitable for precipitation measurements over a wide span of radial velocities and slant ranges, even in the presence of ground clutter. The radar transmits two uniform pulse trains at 2.710 and 2.760 GHz. Uniformly spaced pulses permit ground clutter cancellation of up to 50 dB to be achieved with a three-pole elliptic filter. Pulse spacing at one frequency is consistent with long-range coverage in reflectivity, while spacing of the second is consistent with a wide unambiguous velocity measurement span.
Download or read book MTI Radar written by D. Curtis Schleher and published by Artech House Publishers. This book was released on 1978 with total page 518 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author :Martin Schetzen Publisher :AIAA (American Institute of Aeronautics & Astronautics) ISBN 13 : Total Pages :210 pages Book Rating :4.3/5 (91 download)
Book Synopsis Airborne Doppler Radar by : Martin Schetzen
Download or read book Airborne Doppler Radar written by Martin Schetzen and published by AIAA (American Institute of Aeronautics & Astronautics). This book was released on 2006 with total page 210 pages. Available in PDF, EPUB and Kindle. Book excerpt: The authors extensive work in Doppler radar theoryspecifically his development of an exact theory for the spectrum of an airborne Doppler radaris thoroughly presented in this important book. Much of the material presented has not previously appeared in print, and anyone involved in Doppler theory and applications, airborne Doppler radar, or aircraft stabilization and navigation will find this book invaluable. The book begins with a basic discussion of the Doppler effect and its various applications, and how Doppler radar can be used for the stabilization and navigation of aircraft. A quasi-static approximation of the Doppler spectrum is presented along with illustrations and discussions to help the reader gain an intuitive understanding of the approximation and its limitations. A summary of the mathematical concepts required for development of an exact theory is then presented using the case of a narrow beam antenna. This is followed by the development of the exact theory for the general case, which is graphically illustrated and compared with the quasi-static approximation. General conditions for which the quasi-static approximation error would be excessivespecifically as applied to laser Doppler radars and low-flying aircraftare presented. Software, in the form of an executable MATLAB program which can be used to determine the Doppler spectrum parameters for any antenna pattern and any terrain backscattering, is included.
