Download or read book Investigation of Layered Tropospheric Structures Using Forward scatter Techniques written by Uve H. W. Lammers and published by . This book was released on 1970 with total page 48 pages. Available in PDF, EPUB and Kindle. Book excerpt: A high-resolution forward-scatter system can be effectively used to study the tropospheric refractive-index structure over extended volumes of space. This report is a theoretical analysis of the performance of scan experiments in which the common volume is systematically moved through space by swinging the narrowbeam transmitter and receiver antennas in azimuth and elevation. Experimental evidence points toward a layered composition of the tropospheric refractive index. Various models of single or multiple layers of turbulent refractive-index perturbations, including vertical-layer widths that are a fraction of the common volume lateral dimensions, are used to simulate tropospheric conditions and to compute the spatial response of a narrowbeam forward-scatter system. The rather complex forward-scatter geometry along the great circle path and at a horizontal distance from it is evaluated in enough detail to allow accurate determination of scatter signals. The effect of specular contributions is included to show how a reflection term typically superposes on the scatter signal when the refractive-index field is analyzed. Refractive-index structures are constantly being changed and new ones produced by such parameters as wind and turbulence. Hence, the information obtained from the high-resolution forward-scatter system also relates to these parameters. (Author).
Download or read book Investigation of Layered Tropospheric Structures Using Forward scatter Techniques written by Uve H. W. Lammers and published by . This book was released on 1970 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: A high-resolution forward-scatter system can be effectively used to study the tropospheric refractive-index structure over extended volumes of space. This report is a theoretical analysis of the performance of scan experiments in which the common volume is systematically moved through space by swinging the narrowbeam transmitter and receiver antennas in azimuth and elevation. Experimental evidence points toward a layered composition of the tropospheric refractive index. Various models of single or multiple layers of turbulent refractive-index perturbations, including vertical-layer widths that are a fraction of the common volume lateral dimensions, are used to simulate tropospheric conditions and to compute the spatial response of a narrowbeam forward-scatter system. The rather complex forward-scatter geometry along the great circle path and at a horizontal distance from it is evaluated in enough detail to allow accurate determination of scatter signals. The effect of specular contributions is included to show how a reflection term typically superposes on the scatter signal when the refractive-index field is analyzed. Refractive-index structures are constantly being changed and new ones produced by such parameters as wind and turbulence. Hence, the information obtained from the high-resolution forward-scatter system also relates to these parameters. (Author)
Download or read book A Study of Tropospheric Refractive Index Temperature Humidity and Velocity Fields Using Electromagnetic and Acoustic Wave Propagation Methods Supported by in Situ Measurements written by Anton G. Kjelaas and published by . This book was released on 1974 with total page 89 pages. Available in PDF, EPUB and Kindle. Book excerpt: Paper 1 summarizes the potentials of different electromagnetic and acoustic wave propagation experiments as diagnostic tools in the study of the refractive-index, temperature, humidity and velocity fields in the troposphere. Papers 2 and 3 discuss measurements of horizontal wind velocity using optical line-of-sight propagation techniques. Paper 2 deals with measurements of horizontal divergence while in paper 3 the spectrum of the spatial wind together with the spectrum of air-pressure are used to deduce the propagation speed and direction of progressive gravity waves in the troposphere. Paper 4 deals with the potentials of an array of vertically pointing acoustic echo sounders to study time-dependent structures, especially waves, in the boundary layer. In paper 5 a forward scatter technique (beam-swinging) is used to deduce the vertical spectra of refractive index and air velocity. The influence of atmospheric stability on these spectra is discussed. Paper 6 discusses the spatial structure of refractive index, temperature and humidity in the lowest 2000 m of the troposphere as deduced from tethered balloon measurements.
Download or read book Report on Research at AFCRL written by Air Force Cambridge Research Laboratories (U.S.) and published by . This book was released on 1970 with total page 400 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Environmental Research Papers written by and published by . This book was released on 1969 with total page 396 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1995 with total page 702 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Bibliography with Abstracts of AFCRL Publications from 1 April to 30 June 1970 written by Air Force Cambridge Research Laboratories (U.S.) and published by . This book was released on 1970 with total page 268 pages. Available in PDF, EPUB and Kindle. Book excerpt: This bibliography lists all AFCRL in-house reports, journal articles, and contractor reports issued from 1 April to 30 June 1970. Abstracts are included.
Download or read book Aspects of Electromagnetic Wave Scattering in Radio Communications written by North Atlantic Treaty Organization. Advisory Group for Aerospace Research and Development. Electromagnetic Wave Propagation Panel and published by . This book was released on 1978 with total page 568 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book U S Government Research Development Reports written by and published by . This book was released on 1970-11 with total page 922 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Facilities for Atmospheric Research written by and published by . This book was released on 1966 with total page 634 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Journal of Research written by United States. National Bureau of Standards and published by . This book was released on 1965 with total page 934 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Journal of Research of the National Bureau of Standards written by United States. National Bureau of Standards and published by . This book was released on 1959 with total page 482 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book U S Government Research and Development Reports Index written by and published by . This book was released on 1970 with total page 812 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Air Force Research Resum s written by and published by . This book was released on with total page 592 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Meteorological and Geoastrophysical Abstracts written by and published by . This book was released on 1975 with total page 572 pages. Available in PDF, EPUB and Kindle. Book excerpt: Covering the world's literature on meteorology, climatology, atmospheric chemistry and physics, physical oceanography, hydrology, glaciology, and related environmental sciences.
Download or read book Government Reports Annual Index written by and published by . This book was released on 1982 with total page 1212 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Government Reports Index written by and published by . This book was released on 1972 with total page 1126 pages. Available in PDF, EPUB and Kindle. Book excerpt:
