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Ion Velocity Measurements for the Ionospheric Connections Explorer

机译：电离层连接探险家的离子速度测量

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摘要

The Ionospheric Connections Explorer (ICON) payload includes an Ion Velocity Meter (IVM) to provide measurements of the ion drift motions, density, temperature and major ion composition at the satellite altitude near 575 km. The primary measurement goal for the IVM is to provide the meridional ion drift perpendicular to the magnetic field with an accuracy of 7.5 ms(-1) for all daytime conditions encountered by the spacecraft within 15. of the magnetic equator. The IVM will derive this parameter utilizing two sensors, a retarding potential analyzer (RPA) and an ion drift meter (IDM) that have a robust and successful flight heritage. The IVM described here incorporates improvements in the design and operation to produce the most sensitive device that has been fielded to date. It will specify the ion drift vector, from which the component perpendicular to the magnetic field will be derived. In addition it will specify the total ion density, the ion temperature and the fractional ion composition. These data will be used in conjunction with measurements from the other ICON instruments to uncover the important connections between the dynamics of the neutral atmosphere and the ionosphere through the generation of dynamo currents perpendicular to the magnetic field and collisional forces parallel to the magnetic field. Here the configuration and operation of the IVM instrument are described, as well as the procedures by which the ion drift velocity is determined. A description of the subsystem characteristics, which allow a determination of the expected uncertainties in the derived parameters, is also given.
机译：电离层连接探险器（图标）有效载荷包括离子速度计（IVM），以提供卫星海拔海拔的离子漂移运动，密度，温度和主要离子组合物的测量值，在575公里附近。 IVM的主要测量目标是为磁性赤道内的航天器遇到的所有白天条件提供7.5ms（-1）的精度为磁场的子午离子漂移。 IVM将利用两个传感器，延迟潜在分析仪（RPA）和离子漂移仪（IDM）来导出该参数，该参数具有坚固且成功的飞行遗产。这里描述的IVM融合了设计和操作的改进，以产生迄今为止已符合迄今为止的最敏感的设备。它将指定离子漂移载体，垂直于磁场的组件将得到垂直于磁场。此外，它将指定总离子密度，离子温度和分数离子组合物。这些数据将与来自其他图标仪器的测量结合使用，以通过产生垂直于磁场的发电机电流和平行于磁场的碰撞力来揭示中性气氛和电离层之间的重要连接。这里描述了IVM仪器的配置和操作，以及确定离子漂移速度的过程。还给出了允许确定衍生参数中的预期不确定性的子系统特性的描述。

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  • 来源
    《Space Science Reviews》 |2017年第2期|共15页
  • 作者

    Heelis R. A.; Stoneback R. A.; Perdue M. D.; Depew M. D.; Morgan W. A.; Mankey M. W.; Lippincott C. R.; Harmon L. L.; Holt B. J.;

  • 作者单位

    Univ Texas Dallas Phys Dept William B Hanson Ctr Space Sci Richardson TX 75083 USA;

    Univ Texas Dallas Phys Dept William B Hanson Ctr Space Sci Richardson TX 75083 USA;

    Univ Texas Dallas Phys Dept William B Hanson Ctr Space Sci Richardson TX 75083 USA;

    Univ Texas Dallas Phys Dept William B Hanson Ctr Space Sci Richardson TX 75083 USA;

    Univ Texas Dallas Phys Dept William B Hanson Ctr Space Sci Richardson TX 75083 USA;

    Univ Texas Dallas Phys Dept William B Hanson Ctr Space Sci Richardson TX 75083 USA;

    Univ Texas Dallas Phys Dept William B Hanson Ctr Space Sci Richardson TX 75083 USA;

    Univ Texas Dallas Phys Dept William B Hanson Ctr Space Sci Richardson TX 75083 USA;

    Univ Texas Dallas Phys Dept William B Hanson Ctr Space Sci Richardson TX 75083 USA;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 航空;
  • 关键词

    Ionosphere dynamics; Plasma measurements;

    机译：电离层动态;等离子体测量;

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