Scholarlink

<p>The Solar Wind Magnetosphere Ionosphere Link Explorer (SMILE) aims at characterizing the solar wind input through the magnetic reconnection and the resulting response of the magnetosphere and ionosphere through global imaging of the magnetopause and aurora. Magnetic field investigation is a part of the in-situ experiment, which will measure the magnetic field and plasma to help monitoring the near-Earth solar wind without ambiguity of time shift; or identifying magnetic reconnections events on the magnetopause. Mounted on the outer extremity of a 3&#xa0;m long deployable boom, the magnetic field instrumentation consists of two independent tri-axial fluxgate magnetometer sensors controlled by independent but functionally identical electronics, drawing their power from redundant power supplies on the spacecraft. Each sensor samples the vector magnetic field at a cadence of 40 vectors per second, over a wide dynamic range (±512, ±2560, ±12,800; ±64,000) nT with a quantization uncertainty of 24 bits or 0.062 pT in the most sensitive dynamic range and an accuracy better than 0.035% full scale. A spacecraft magnetic control program has been implemented to ensure that the stray field from the spacecraft at the outboard sensor’s location remains below 10 nT. Occasional spacecraft maneuvers – 2-axis rotations – will be performed during flight to characterize both the spacecraft’s residual magnetic fields and instrument offsets. With calibration both on ground and in flight, the magnetometer is expected to provide accurate measurements dedicated to the interpretation of magnetopause and aurora images, and thus further our understanding about the solar wind, magnetosphere and ionosphere coupling.</p>

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The Magnetometer for the Solar Wind Magnetosphere Ionosphere Link Explorer

  • 期刊论文

  • 出版模式：

    开放获取

  • 发表日期：

    2025年11月18日

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  • L. Li,
  • J. D. Wang,
  • W. Song,
  • Y. T. Zhang,
  • Y. F. Wang,
  • R. Tao,
  • Y. L. Xue,
  • X. C. Gou,
  • S. Z. Ye,
  • Y. Y. Feng,
  • Y. Liu,
  • Y. R. Gao,
  • N. Li,
  • S. Lv,
  • C. P. Escoubet,
  • C. Wang,
  • L. Dai,
  • J. Li,
  • J. H. Zheng,
  • M. Wang,
  • Z. Y. Zhang,
  • T. He,
  • L. Liu,
  • X. J. Shi,
  • D. Agnolon,
  • C. Runchman,
  • W. Raab,
  • D. S. Zhao

摘要

The Solar Wind Magnetosphere Ionosphere Link Explorer (SMILE) aims at characterizing the solar wind input through the magnetic reconnection and the resulting response of the magnetosphere and ionosphere through global imaging of the magnetopause and aurora. Magnetic field investigation is a part of the in-situ experiment, which will measure the magnetic field and plasma to help monitoring the near-Earth solar wind without ambiguity of time shift; or identifying magnetic reconnections events on the magnetopause. Mounted on the outer extremity of a 3 m long deployable boom, the magnetic field instrumentation consists of two independent tri-axial fluxgate magnetometer sensors controlled by independent but functionally identical electronics, drawing their power from redundant power supplies on the spacecraft. Each sensor samples the vector magnetic field at a cadence of 40 vectors per second, over a wide dynamic range (±512, ±2560, ±12,800; ±64,000) nT with a quantization uncertainty of 24 bits or 0.062 pT in the most sensitive dynamic range and an accuracy better than 0.035% full scale. A spacecraft magnetic control program has been implemented to ensure that the stray field from the spacecraft at the outboard sensor’s location remains below 10 nT. Occasional spacecraft maneuvers – 2-axis rotations – will be performed during flight to characterize both the spacecraft’s residual magnetic fields and instrument offsets. With calibration both on ground and in flight, the magnetometer is expected to provide accurate measurements dedicated to the interpretation of magnetopause and aurora images, and thus further our understanding about the solar wind, magnetosphere and ionosphere coupling.