The THEMIS Digital Fields Board

被引：126

作者：

Cully, C. M. ^{[1
]}

Ergun, R. E. ^{[1
]}

Stevens, K. ^{[1
]}

Nammari, A. ^{[1
]}

Westfall, J. ^{[1
]}

机构：

[1] Univ Colorado, Atmospher & Space Phys Lab, Boulder, CO 80309 USA

来源：

SPACE SCIENCE REVIEWS | 2008年 / 141卷 / 1-4期

关键词：

THEMIS; Signal processing; Electric field instrument; Search-coil magnetometer;

D O I：

10.1007/s11214-008-9417-1

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

The Digital Fields Board (DFB) performs the data acquisition and signal processing for the Electric Fields Instrument and Search Coil Magnetometer on each of the THEMIS (Time History of Events and Macroscale Interactions during Substorms) satellites. The processing is highly flexible and low-power (similar to 1.1 watt orbit-averaged). The primary data products are time series waveforms and wave power spectra of the electric and magnetic fields. The power spectra can be computed either on the raw signals (i.e. in a system co-rotating with the spacecraft) or in a coordinate system aligned with the local DC magnetic field. Other data products include spectral power from multiple passbands (filter banks) and electric power in the 30-500 kHz band. The DFBs on all five spacecraft have been turned on and checked out in-flight, and are functioning as designed.

引用

页码：343 / 355

页数：13