Bistatic High Frequency Radar Ocean Surface Cross Section For An Antenna On A Floating Platform

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Bistatic High Frequency Radar Ocean Surface Cross Section for an Antenna on a Floating Platform

Author : Yue Ma
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (132 download)

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Book Synopsis Bistatic High Frequency Radar Ocean Surface Cross Section for an Antenna on a Floating Platform by : Yue Ma

Download or read book Bistatic High Frequency Radar Ocean Surface Cross Section for an Antenna on a Floating Platform written by Yue Ma and published by . This book was released on 2017 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Land-based high frequency surface wave radar (HFSWR) is an established sensor for ocean remote sensing. Placing an HFSWR on a floating platform has the advantage of mobility. However, antenna motion will distort the Doppler spectrum, which is used to extract ocean information and to detect the signatures of targets. In this thesis, significant effort has been expended on establishing radar cross section (RCS) models for a fixed receiver and a transmitter on a floating platform, analyzing the effect of the antenna motion, and developing a motion compensation method to eliminate the effect of the platform motion. The first- and second-order monostatic RCSs of the ocean surface for the case of a pulsed dipole source on a floating platform have been previously derived in the literature, with the assumption that the platform motion is a single-frequency sinusoid. Following that work, the research in this thesis is extended to the bistatic case. The effect of platform motion on simulated Doppler spectra is considered for a variety of sea states. It is shown that the resulting motion-induced peaks are symmetrically distributed in the Doppler spectrum. Following this work, the corresponding bistatic RCS models for a frequency modulated continuous waveform (FMCW) source are derived. Results show that the sidelobe level for an FMCW source is reduced with increasing extent of range bin. To mimic real world scenarios, platform motion is next modelled as a combination of two cosine functions, based on existing research of realistic horizontal motions of moored floating platforms. RCSs incorporating a dual-frequency platform motion model are then developed. These can be extended to a general form incorporating a multi-frequency platform motion. It is found that the platform motion can be viewed as a modulator of the radar frequencies, with the modulation indices related to the amplitudes of the platform motion. Finally, to mitigate the effect of platform motion on the Doppler spectra, a motion compensation method is proposed. This motion compensation method can be achieved by a deconvolution process. Calculations involving a RCS model, incorporating external noise, for an antenna on a floating platform are conducted in order to simulate field data and to examine this motion compensation method. The external noise is characterized as a white Gaussian zero-mean process. By using this newly-developed RCS model with external noise, motion compensation results under different sea states and signal-to-noise ratios (SNRs) are examined. The outcomes indicate that an iterative Tikhonov regularized deconvolution technique is superior to other compensation methods implemented in this study.

The Second-order High Frequency Bistatic Radar Cross Section of the Ocean Surface for "patch Scatter"

Download The Second-order High Frequency Bistatic Radar Cross Section of the Ocean Surface for

Author : Weimin Huang
Publisher :
ISBN 13 :
Total Pages : 200 pages
Book Rating : 4.:/5 (81 download)

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Book Synopsis The Second-order High Frequency Bistatic Radar Cross Section of the Ocean Surface for "patch Scatter" by : Weimin Huang

Download or read book The Second-order High Frequency Bistatic Radar Cross Section of the Ocean Surface for "patch Scatter" written by Weimin Huang and published by . This book was released on 2004 with total page 200 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Development of a Model for the First Order Bistatic Ocean Clutter Radar Cross Section for Ground Wave Radars

Author :
Publisher :
ISBN 13 :
Total Pages : 60 pages
Book Rating : 4.:/5 (932 download)

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Book Synopsis Development of a Model for the First Order Bistatic Ocean Clutter Radar Cross Section for Ground Wave Radars by :

Download or read book Development of a Model for the First Order Bistatic Ocean Clutter Radar Cross Section for Ground Wave Radars written by and published by . This book was released on 1994 with total page 60 pages. Available in PDF, EPUB and Kindle. Book excerpt: This report documents the development of a theoretical model for the bi-static back-scattered Doppler radar cross-section of the ocean surface, for the first-order or Bragg scatter component only. The report begins with some basic scattering theory, and equations for radar cross-section are compared with previously available theory. In the development of the model, a narrow beam receive system is assumed, as well as static receiver and transmitter locations. The radar cross-section of the ocean is derived in the ensemble average sense in that no effort is made to incorporate statistical variations in the ocean surface model or statistical variations in the received ocean clutter signal. Some typical results from the model are presented and briefly discussed.

Radar Cross Section Handbook

Author : George T. Ruck
Publisher :
ISBN 13 :
Total Pages : 504 pages
Book Rating : 4.:/5 (43 download)

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Book Synopsis Radar Cross Section Handbook by : George T. Ruck

Download or read book Radar Cross Section Handbook written by George T. Ruck and published by . This book was released on 1970 with total page 504 pages. Available in PDF, EPUB and Kindle. Book excerpt:

The High Frequency Surface Wave Radar Cross Section for Ocean Swell

Author : Chengxi Shen
Publisher :
ISBN 13 :
Total Pages : 264 pages
Book Rating : 4.:/5 (995 download)

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Book Synopsis The High Frequency Surface Wave Radar Cross Section for Ocean Swell by : Chengxi Shen

Download or read book The High Frequency Surface Wave Radar Cross Section for Ocean Swell written by Chengxi Shen and published by . This book was released on 2013 with total page 264 pages. Available in PDF, EPUB and Kindle. Book excerpt:

An Algorithm for the Extraction of Ocean Surface Current Velocity from Bistatic HF Groundwave Radar Data

Author : Qiu Jin
Publisher :
ISBN 13 :
Total Pages : 180 pages
Book Rating : 4.:/5 (456 download)

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Book Synopsis An Algorithm for the Extraction of Ocean Surface Current Velocity from Bistatic HF Groundwave Radar Data by : Qiu Jin

Download or read book An Algorithm for the Extraction of Ocean Surface Current Velocity from Bistatic HF Groundwave Radar Data written by Qiu Jin and published by . This book was released on 2007 with total page 180 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Radar Cross Section Measurements

Author : Eugene F. Knott
Publisher : Springer Science & Business Media
ISBN 13 : 1468499041
Total Pages : 557 pages
Book Rating : 4.4/5 (684 download)

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Book Synopsis Radar Cross Section Measurements by : Eugene F. Knott

Download or read book Radar Cross Section Measurements written by Eugene F. Knott and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 557 pages. Available in PDF, EPUB and Kindle. Book excerpt: The original campus of the University of Michigan was nearly a perfect square about a half-mile along a side. A street-sized walk, appropriately called the Diag, runs diagonally across this square, connecting its southeast and northwest corners. In 1904 a new engineering building was either started or finished (I do not remember which) to house classrooms. When another engineering building was built on the expanded campus across the street from it many years later, the old building came to be known as West Engine, to distinguish it from the new East Engine. Old West Engine is (or maybe by now, was) a four-story, L-shaped structure that stood at the southeast corner of the original campus. It was built with an arch in it to straddle the Diag at the apex of the L. You walked over the Engineering Arch to get from one leg of the L to the other if you were inside the building, and you walked under it when you entered the campus from the southeast corner. Affixed to the masonry wall of the arch was a plaque I often noted in passing. It bore a quote attributed to Horace Greeley (1811-1872), who I did not know at the time was the founder, editor, and publisher of the New York Tribune. It said, simply, Young man, when theory and practice differ, use your horse sense. The suggestion seems worthy of an exclamation point instead of a period, but I do not remember if it had one.

Radar Cross Section Handbook

Author : George T. Ruck
Publisher : Springer
ISBN 13 :
Total Pages : 502 pages
Book Rating : 4.3/5 (91 download)

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Book Synopsis Radar Cross Section Handbook by : George T. Ruck

Download or read book Radar Cross Section Handbook written by George T. Ruck and published by Springer. This book was released on 1970 with total page 502 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Monostatic and Bistatic HF Radar Cross Section Analysis of Large Vessels Using FEKO

Author : Symon K. Podilchak
Publisher :
ISBN 13 :
Total Pages : 0 pages
Book Rating : 4.:/5 (851 download)

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Book Synopsis Monostatic and Bistatic HF Radar Cross Section Analysis of Large Vessels Using FEKO by : Symon K. Podilchak

Download or read book Monostatic and Bistatic HF Radar Cross Section Analysis of Large Vessels Using FEKO written by Symon K. Podilchak and published by . This book was released on 2011 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Estimation of the Sea Surface Radar Cross Section at HF from Second-Order Doppler Spectrum Characteristics

Author : D. B. Trizna
Publisher :
ISBN 13 :
Total Pages : 25 pages
Book Rating : 4.:/5 (227 download)

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Book Synopsis Estimation of the Sea Surface Radar Cross Section at HF from Second-Order Doppler Spectrum Characteristics by : D. B. Trizna

Download or read book Estimation of the Sea Surface Radar Cross Section at HF from Second-Order Doppler Spectrum Characteristics written by D. B. Trizna and published by . This book was released on 1982 with total page 25 pages. Available in PDF, EPUB and Kindle. Book excerpt: A technique is developed for estimating the radar cross section of the sea surface at HF (2-30 MHz) from two simple measurements made of the radar Doppler spectrum. These are: the ratio of approach/recede Bragg line energy, and the ratio of strongest Bragg line amplitude to average value amplitude of second-order backscatter at zero Doppler frequency. A nomograph is given, based on a theoretical model of second-order scatter developed by the author, which then allows one to determine the number of decibels the Bragg ocean spectral component is down from the classical Phillips asymptotic value, used here only for a reference. Comparison is made with some surface wave data for three different cases in which buoy data are available for comparison with multi-frequency radar data collected simultaneously at two different look angles. An example is also shown where such a calculation can be used to estimate the cross section of a target return existing within the same Doppler spectrum. Limitations of the technique are also discussed. (Author).

Bistatic Radar Cross Section of a Perfectly Conducting Rhombus-Shaped Flat Plate

Author : Alan Jeffrey Fenn
Publisher :
ISBN 13 :
Total Pages : 75 pages
Book Rating : 4.:/5 (217 download)

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Book Synopsis Bistatic Radar Cross Section of a Perfectly Conducting Rhombus-Shaped Flat Plate by : Alan Jeffrey Fenn

Download or read book Bistatic Radar Cross Section of a Perfectly Conducting Rhombus-Shaped Flat Plate written by Alan Jeffrey Fenn and published by . This book was released on 1990 with total page 75 pages. Available in PDF, EPUB and Kindle. Book excerpt: The bistatic radar cross section of a perfectly conducting flat plate that has a rhombus shape (equilateral parallelogram) is investigated. The Ohio State University electromagnetic surface patch code (ESP version 4) is used to compute the theoretical bistatic radar cross section of a 35- x 27-in rhombus plate at 1.3 GHz over the bistatic angles 15 deg to 142 deg. The ESP-4 computer code is a method of moments FORTRAN-77 program which can analyze general configurations of plates and wires. This code has been installed and modified at Lincoln Laboratory on a SUN 3 computer network. Details of the code modifications are described. Comparisons of the method of moments simulations and measurements of the rhombus plate are made. It is shown that the ESP-4 computer code provides a high degree of accuracy in the calculation of copolarized and cross-polarized bistatic radar cross section patterns. Keywords: Electromagnetic surfaces; Method of moments; Computer programs; Radar cross sections.

International Aerospace Abstracts

Author :
Publisher :
ISBN 13 :
Total Pages : 1014 pages
Book Rating : 4.F/5 ( download)

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Book Synopsis International Aerospace Abstracts by :

Download or read book International Aerospace Abstracts written by and published by . This book was released on 1987 with total page 1014 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Bistatic HF Radar

Author : Stuart Anderson
Publisher :
ISBN 13 : 9783039433308
Total Pages : 204 pages
Book Rating : 4.4/5 (333 download)

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Book Synopsis Bistatic HF Radar by : Stuart Anderson

Download or read book Bistatic HF Radar written by Stuart Anderson and published by . This book was released on 2020-10-12 with total page 204 pages. Available in PDF, EPUB and Kindle. Book excerpt: The proliferation of HF radar systems for ocean remote sensing and maritime surveillance continues apace, with hundreds of such radars now deployed around the world. The overwhelming majority of these radars operate in the conventional monostatic configuration, with the transmitting and receiving systems collocated or closely spaced; this simple geometry has obvious advantages in terms of cost, siting requirements, communications, maintenance, signal processing, and echo interpretation, and it has been adopted by HF radars exploiting line-of-sight, surface wave, and skywave propagation modalities. All these considerations notwithstanding, in some circumstances there can be compelling reasons to implement bistatic configurations, defined as geometries in which the separation between transmitter and receiver is comparable with the range to the zones being interrogated. Factors that can drive this decision include energy budget, desire to exploit hybrid propagation modes, scattering characteristics of the targets of interest, properties of the clutter, survivability, and covertness. This book, a compilation of papers by leading researchers in the field, offers a panoramic account of the state of the art in bistatic HF radar. Topics covered include system design, HF propagation and scattering, signal processing, echo interpretation, and applications in the maritime domain. Supported with extensive references to the literature, this book should serve as an essential source for practitioners keen to expand the capabilities of their HF radar systems.

Scientific and Technical Aerospace Reports

Author :
Publisher :
ISBN 13 :
Total Pages : 1572 pages
Book Rating : 4.:/5 (31 download)

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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:

Introduction to Microwave Remote Sensing

Author : Iain H. Woodhouse
Publisher : CRC Press
ISBN 13 : 1351988557
Total Pages : 321 pages
Book Rating : 4.3/5 (519 download)

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Book Synopsis Introduction to Microwave Remote Sensing by : Iain H. Woodhouse

Download or read book Introduction to Microwave Remote Sensing written by Iain H. Woodhouse and published by CRC Press. This book was released on 2017-07-12 with total page 321 pages. Available in PDF, EPUB and Kindle. Book excerpt: Introduction to Microwave Remote Sensing offers an extensive overview of this versatile and extremely precise technology for technically oriented undergraduates and graduate students. This textbook emphasizes an important shift in conceptualization and directs it toward students with prior knowledge of optical remote sensing: the author dispels any linkage between microwave and optical remote sensing. Instead, he constructs the concept of microwave remote sensing by comparing it to the process of audio perception, explaining the workings of the ear as a metaphor for microwave instrumentation. This volume takes an “application-driven” approach. Instead of describing the technology and then its uses, this textbook justifies the need for measurement then explains how microwave technology addresses this need. Following a brief summary of the field and a history of the use of microwaves, the book explores the physical properties of microwaves and the polarimetric properties of electromagnetic waves. It examines the interaction of microwaves with matter, analyzes passive atmospheric and passive surface measurements, and describes the operation of altimeters and scatterometers. The textbook concludes by explaining how high resolution images are created using radars, and how techniques of interferometry can be applied to both passive and active sensors.

Remote Sensing of Atmospheric Conditions for Wind Energy Applications

Author : Charlotte Bay Hasager
Publisher : MDPI
ISBN 13 : 3038979422
Total Pages : 290 pages
Book Rating : 4.0/5 (389 download)

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Book Synopsis Remote Sensing of Atmospheric Conditions for Wind Energy Applications by : Charlotte Bay Hasager

Download or read book Remote Sensing of Atmospheric Conditions for Wind Energy Applications written by Charlotte Bay Hasager and published by MDPI. This book was released on 2019-05-24 with total page 290 pages. Available in PDF, EPUB and Kindle. Book excerpt: This Special Issue “Atmospheric Conditions for Wind Energy Applications” hosts papers on aspects of remote sensing for atmospheric conditions for wind energy applications. Wind lidar technology is presented from a theoretical view on the coherent focused Doppler lidar principles. Furthermore, wind lidar for applied use for wind turbine control, wind farm wake, and gust characterizations is presented, as well as methods to reduce uncertainty when using lidar in complex terrain. Wind lidar observations are used to validate numerical model results. Wind Doppler lidar mounted on aircraft used for observing winds in hurricane conditions and Doppler radar on the ground used for very short-term wind forecasting are presented. For the offshore environment, floating lidar data processing is presented as well as an experiment with wind-profiling lidar on a ferry for model validation. Assessments of wind resources in the coastal zone using wind-profiling lidar and global wind maps using satellite data are presented.

Radar Handbook

Author : Merrill Ivan Skolnik
Publisher : McGraw-Hill Professional Publishing
ISBN 13 :
Total Pages : 1228 pages
Book Rating : 4.3/5 (91 download)

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Book Synopsis Radar Handbook by : Merrill Ivan Skolnik

Download or read book Radar Handbook written by Merrill Ivan Skolnik and published by McGraw-Hill Professional Publishing. This book was released on 1990 with total page 1228 pages. Available in PDF, EPUB and Kindle. Book excerpt: This edition is the most comprehensive and informative available on radar systems and technology. Thoroughly revised and updated to reflect the advances made in radar over the past two decades. Charts/graphs.