Design Study For A Coherent Polarization Diversity Radar
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Design Study For A Coherent Polarization Diversity Radar
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Author :
language : en
Publisher:
Release Date : 1980
Design Study For A Coherent Polarization Diversity Radar written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1980 with categories.
Coherent Polarization Diversity Radar Study
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Author : James I. Metcalf
language : en
Publisher:
Release Date : 1979
Coherent Polarization Diversity Radar Study written by James I. Metcalf and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1979 with Nephanalysis (Meteorology) categories.
Simulation And Interpretation Of Polarization Diversity Radar Spectral Functions
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Author : James I. Metcalf
language : en
Publisher:
Release Date : 1983
Simulation And Interpretation Of Polarization Diversity Radar Spectral Functions written by James I. Metcalf and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1983 with Doppler radar categories.
A numerical model was developed to simulate the power spectra, cross-spectrum, and derived functions obtainable from a coherent polarization diversity radar. The model was used to investigate the effects of air velocity variance, differential propagation, and noise on the spectral functions. Input parameters include radar wavelength, elevation angle, air velocity variance, rainfall rate, propagation distance, fraction of scatterers having a preferred orientation, and relative noise level. Results of calculations for 8.6 mm and 7.5 cm wavelengths are illustrated. These are compared with the functional forms obtained from theory and discussed in terms of the meteorological information derivable from them. The forms of the spectral power ratio and the cross-spectral amplitude ratio are strongly affected by air velocity variance and by noise. However, it appears possible to derive a good estimation of the Doppler air velocity from the power spectra. The cross-spectral amplitude ratio may be of more general value in analysis than previously thought, because its Doppler velocity domain is greater than that of the spectral power ratio in the presence of radar system noise. The absolute error of the propagation term estimated from the cross-spectral amplitude ratio is not strongly dependent on the rainfall rate or propagation distance.
Theory Of Coherent Polarization Diversity Radar In Meteorology
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Author : James I. Metcalf
language : en
Publisher:
Release Date : 1980
Theory Of Coherent Polarization Diversity Radar In Meteorology written by James I. Metcalf and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1980 with Electromagnetic waves categories.
Waveform Design And Diversity For Advanced Radar Systems
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Author : Fulvio Gini
language : en
Publisher: IET
Release Date : 2012-05-18
Waveform Design And Diversity For Advanced Radar Systems written by Fulvio Gini and has been published by IET this book supported file pdf, txt, epub, kindle and other format this book has been release on 2012-05-18 with Technology & Engineering categories.
This is the first book to discuss current and future applications of waveform diversity and design in subjects such as radar and sonar, communications systems, passive sensing, and many other technologies. Waveform diversity allows researchers and system designers to optimize electromagnetic and acoustic systems for sensing, communications, electronic warfare or combinations thereof. It enables solutions to problems with how each system performs its own particular function as well as how it is affected by other systems and how those other systems may likewise be affected. It is an excellent standalone introduction to waveform diversity and design, which takes a high potential technology area and makes it visible to other researchers, as well as young engineers.
Coherent Polarization Diversity Radar Measurements Of Clouds And Precipitation
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Author : Jim D. Echard
language : en
Publisher:
Release Date : 1981
Coherent Polarization Diversity Radar Measurements Of Clouds And Precipitation written by Jim D. Echard and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1981 with Radar categories.
Scientific And Technical Aerospace Reports
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Author :
language : en
Publisher:
Release Date : 1995
Scientific And Technical Aerospace Reports written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1995 with Aeronautics categories.
Simulation And Interpretation Of Polarization Diversity Radar Spectral Functions
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Author : James I. Metcalf
language : en
Publisher:
Release Date : 1983
Simulation And Interpretation Of Polarization Diversity Radar Spectral Functions written by James I. Metcalf and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1983 with Doppler radar categories.
A numerical model was developed to simulate the power spectra, cross-spectrum, and derived functions obtainable from a coherent polarization diversity radar. The model was used to investigate the effects of air velocity variance, differential propagation, and noise on the spectral functions. Input parameters include radar wavelength, elevation angle, air velocity variance, rainfall rate, propagation distance, fraction of scatterers having a preferred orientation, and relative noise level. Results of calculations for 8.6 mm and 7.5 cm wavelengths are illustrated. These are compared with the functional forms obtained from theory and discussed in terms of the meteorological information derivable from them. The forms of the spectral power ratio and the cross-spectral amplitude ratio are strongly affected by air velocity variance and by noise. However, it appears possible to derive a good estimation of the Doppler air velocity from the power spectra. The cross-spectral amplitude ratio may be of more general value in analysis than previously thought, because its Doppler velocity domain is greater than that of the spectral power ratio in the presence of radar system noise. The absolute error of the propagation term estimated from the cross-spectral amplitude ratio is not strongly dependent on the rainfall rate or propagation distance.
Analysis Of A Polarization Diversity Weather Radar Design
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Author : J. S. Ussailis
language : en
Publisher:
Release Date : 1982
Analysis Of A Polarization Diversity Weather Radar Design written by J. S. Ussailis and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1982 with categories.
This report focuses not only on a design for a pulse-to-pulse polarization diversity modification of the Air Force Geophysics Laboratory (AFGL) S-band Doppler weather radar, but also upon the meteorological and technical requirements of such a radar. The theoretical aspects of and physical limitations imposed by the polarization diversity requirement are presented independently of this design and as a result are applicable towards the development of any similar system. The antenna modification could also be applied towards the general case, excepting the condition imposed in this design that the present twenty-four foot diameter reflector be retained. Formulae are developed to demonstrate the various uncertainties for the system as a whole and the antenna in particular. Tradeoffs between the various meteorological measurement goals vs available and constructible radio frequency components are presented.
Technical Abstract Bulletin
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Author :
language : en
Publisher:
Release Date : 1981
Technical Abstract Bulletin written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1981 with Science categories.