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  • 1
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    Receiving antenna installation for ionospheric scattering links (1972)
    In:  CASI
    Details
    Publication Date: 2006-04-26
    Description: Smearing of the scattered-energy flux density over a range of angles of arrival permits the use of a receiving-end antenna with a height lower than theoretical.
    Keywords: GEOPHYSICS
    Type: Morphology of the Quiet and Disturbed Ionosphere; p 65-68
    Format: text
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    NASA TECHNICAL REPORTS
  • 2
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    Radio wave propagation at frequencies exceeding MUF-F2 in the short wave band (1972)
    In:  CASI
    Details
    Publication Date: 2006-04-26
    Description: The results of measurements of field strength and signal/noise ratio on experimental ionospheric-scattering short wave radio links are presented. It is shown that the seasonal and diurnal variations of field strength are determined by features of solar and meteoric activity. The role of the sporadic E-layer in propagation of short radio waves at frequencies exceeding MUF-F2 is noted.
    Keywords: GEOPHYSICS
    Type: Morphology of the Quiet and Disturbed Ionosphere; p 55-59
    Format: text
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    NASA TECHNICAL REPORTS
  • 3
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    Occupancy of the radio frequency spectrum in the 16-23 MHz band (1972)
    In:  CASI
    Details
    Publication Date: 2006-04-26
    Description: Measurement results are presented for actual utilization of the short wave frequency band, obtained by continuous registration of the number of radio stations in the 16-23 MHz band over an annual cycle (1965). It is shown that there is a relation between the number of radio stations and the variations of MUF-F2. During years of minimum solar activity and at night, segments free of radio stations operating by normal reflection, can be selected in the 18-23-MHz band for ionospheric-scattering links.
    Keywords: GEOPHYSICS
    Type: Morphology of the Quiet and Disturbed Ionosphere; p 60-64
    Format: text
    Location Call Number Expected Availability
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    NASA TECHNICAL REPORTS
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