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Thursday, July 16, 2020 | History

2 edition of ray tracing digital computer program for the study of magnetospheric duct propagation found in the catalog.

ray tracing digital computer program for the study of magnetospheric duct propagation

Jayaram Ramasastry

ray tracing digital computer program for the study of magnetospheric duct propagation

by Jayaram Ramasastry

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Published by Scientific and Technical Information Division, Office of Technology Utilization, National Aeronautics and Space Administration; [for sale by the Clearinghouse for Federal Scientific and Technical Information, Springfield, Va.] in Washington .
Written in English

    Subjects:
  • Ionospheric radio wave propagation -- Data processing.

  • Edition Notes

    Bibliography: p. 115.

    Statement[by] Jayaram Ramasastry and Edward J. Walsh. Prepared by NASA Electronics Research Center.
    SeriesNASA SP-3055, NASA SP ;, 3055.
    ContributionsWalsh, Edward J., joint author., Electronics Research Center (U.S.)
    Classifications
    LC ClassificationsTK6553 .R344
    The Physical Object
    Paginationv, 296 p.
    Number of Pages296
    ID Numbers
    Open LibraryOL5168593M
    LC Control Number74608594

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Ray tracing digital computer program for the study of magnetospheric duct propagation by Jayaram Ramasastry Download PDF EPUB FB2

Full text of "NASA Technical Reports Server (NTRS) A ray tracing digital computer program for the study of magnetospheric duct propagation" See other formats.

Ray tracing digital computer program for the study of magnetospheric duct propagation. Washington, Scientific and Technical Information Division, Office of Technology Utilization, National Aeronautics and Space Administration; [for sale by the Clearinghouse for Federal Scientific and Technical Information, Springfield, Va.] (OCoLC) Book Details: A selection of titles featured in this group of 10 vintage NASA technical publications includes: "Lunar Ephemeris and Selenographic Coordinates of the Earth and Sun," "; "A Ray Tracing Digital Computer Program for the Study of Magnetospheric Duct Propagation"; and "Tabulations of Configuration Factors Between Any Two.

In this study, the physical structure for the propagation of whistler waves within a duct in the earth's magnetosphere is investigated by means of magnetohydrodynamic (MHD) theory.

Ray tracing through simulated tilts shows that the differences in ground distances for one-hop high-frequency (HF) propagation vary from about 1 to km depending on the assumed tilts and distances.

The study is based on geometrical acoustics, using a ray tracing technique. The sound intensity is calculated by digital computer, and a graphical representation obtained. Test results for a. The effectiveness of a UAV air relay was assessed in an urban area using the ray tracing method.

duct and that the propagation range of the sea clutter is increased due to the presence of a. The computer program utilized in this thesis was devel- oped by Raymond P. Wasky. He developed the model to ana- lyze the effects of atmospheric refraction on the field strength of radio emitters.

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The higher the FOM the longer the detection range for a given path. Propagation loss curves can be made from a ray tracing program or actual measurements and smoothed data. In summary, sonar performance is the key to ASW success, and figure of merit is the key to sonar performance.

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Ray Tracing Once the velocity profile is known, the paths of sound rays in that profile can be found using various ray tracing techniques.

The earliest of these was a slide rule (27) developed by the Woods Hole Oceanographic Institution during World War II. It used the same principle as that employed in some modern computer programs. Tropospheric wave propagation - free space propagation, terrain effects - reflection, diffused reflection, diffraction, combined reflection and diffraction.

Standard atmosphere - refraction properties, ray tracing, effective radius, application to terrain sections. Non-standard atmosphere, atmosphere dynamics, duct creation, multipath propagation. SPIE Digital Library Proceedings. Proc. SPIEPhotonics Applications in Astronomy, Communications, Industry, and High-Energy Physics Experiments(6 November ); doi: / has undertaken a study of the Soviet space program for the years The study has been divided into two volumes, of which this is the second.

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