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  • COMMUNICATIONS AND RADAR  (2)
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  • 1
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    Low frequency electric field variations during HF transmissions on a mother-daughter rocket (1977)
    In:  CASI
    Details
    Publication Date: 2017-10-02
    Description: HF wave propagation experiments were conducted on Mother-Daughter rockets in the polar ionosphere. Swept frequency transmissions from the Mother, nominally covering the range from 0.5 to 5 MHz in both CW and pulse modes, are received by the Daughter. In the most recent rocket of the series, the Mother also contained an AC electric field spectrometer covering the frequency range from 10 Hz to 100 kHz in four decade bands. The low frequency response of the ionosphere with respect to waves emitted from the onboard HF transmitter is examined.
    Keywords: COMMUNICATIONS AND RADAR
    Type: AGARD Artificial Modification of Propagation Media; 11 p
    Format: text
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    NASA TECHNICAL REPORTS
  • 2
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    Polar communications: Status and recommendations. Report of the Science Working Group (1987)
    In:  CASI
    Details
    Publication Date: 2019-08-14
    Description: The capabilities of the existing communication links within the polar regions, as well as between the polar regions and the continental United States, are summarized. These capabilities are placed in the context of the principal scientific disciplines that are active in polar research, and in the context of how scientists both utilize and are limited by present technologies. Based on an assessment of the scientific objectives potentially achievable with improved communication capabilities, a list of requirements on and recommendations for communication capabilities necessary to support polar science over the next ten years is given.
    Keywords: COMMUNICATIONS AND RADAR
    Type: NASA-TM-105035 , NAS 1.15:105035
    Format: application/pdf
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    NASA TECHNICAL REPORTS
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