Antenna sheath impedance measured by GEOTAIL spacecraft

Bibliographic Information

Other Title
  • 科学衛星GEOTAILによるプラズマ中でのアンテナ・シース・インピーダンスの測定

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Description

A method of measuring antenna sheath impedance of GEOTAIL spacecraft in the earth′s magnetosphere is described.Since a wave form of calibration signal used for the measurements contains many frequency components(up to 4 kHz),a frequency response of the sheath impedance(admittance)can be obtained.From the frequency response curve,an equivalent circuit of the impedance in the sheath region has been reduced. The measurement result exhibits consistent values of equivalent resistance and capacitance in the sheath region.Since the time resolution of the mesurement is extremely high,a change of impedance during the period of the spacecraft spin has been obtained.

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Details 詳細情報について

  • CRID
    1573105977264716416
  • NII Article ID
    110003248016
  • NII Book ID
    AN10060764
  • Text Lang
    ja
  • Data Source
    • CiNii Articles

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