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The Fast Satellite Fields Instrument

Chapter

Abstract

We describe the electric field sensors and electric and magnetic field signal processing on the FAST (Fast Auroral SnapshoT) satellite. The FAST satellite was designed to make high time resolution observations of particles and electromagnetic fields in the auroral zone to study small-scale plasma interactions in the auroral acceleration region. The DC and AC electric fields are measured with three-axis dipole antennas with 56 m, 8 m, and 5 m baselines. A three-axis flux-gate magnetometer measures the DC magnetic field and a three-axis search coil measures the AC magnetic field. A central signal processing system receives all signals from the electric and magnetic field sensors. Spectral coverage is from DC to ∼4 MHz. There are several types of processed data. Survey data are continuous over the auroral zone and have full-orbit coverage for fluxgate magnetometer data. Burst data include a few minutes of a selected region of the auroral zone at the highest time resolution. A subset of the burst data, high speed hurst memory data, are waveform data at 2 × 106 sample s−1. Electric field and magnetic field data are primarily waveforms and power spectral density as a function of frequency and time. There are also various types of focused data processing, including cross-spectral analysis, fine-frequency plasma wave tracking, high-frequency polarity measurement, and wave-particle correlations.

Keywords

Digital Signal Processor Spectral Coverage Auroral Zone Search Coil Burst Data 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Springer Science+Business Media Dordrecht 2001

Authors and Affiliations

  1. 1.Space Sciences LaboratoryUniversity of CaliforniaBerkeleyUSA
  2. 2.Los Alamos National LaboratoryLos AlamosUSA
  3. 3.University of CaliforniaLos AngelesUSA
  4. 4.Goddard Space Flight CenterGreenbeltUSA
  5. 5.University of MinnesotaMinneapolisUSA

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