The Electric Field Detector on Board the China Seismo Electromagnetic Satellite—In-Orbit Results and Validation

Instruments

Maurizio Candidi¹  Piero Diego¹  Igor Bertello¹  Pietro Ubertini¹  Roberto Ammendola²  Cristian De Santis²  Piergiorgio Picozza²  Mirko Piersanti²  Davide Badoni²  Gianmaria Rebustini²  Giuseppe Masciantonio²  Jungang Lei³  Jianping Huang⁴  Xuhui Shen⁴  Rui Yan⁴  Zhima Zeren⁴  Yi-Bing Guan⁵ 

[1] INAF-Istituto di Astrofisica e Planetologia Spaziali, Rome 00133, Italy;INFN—Sezione di Roma “Tor Vergata”, Rome 00133, Italy;Lanzhou Institute of Physics, Lanzhou 730000, China;National Institute of Natural Hazards, Ministry of Emergency Management of China, Beijing 100085, China;National Space Science Center-CAS, Beijing 100190, China;

关键词: electric field instrument;    low earth orbiting satellite;    plasma physics;   

DOI  :  10.3390/instruments5010001

来源: DOAJ

【 摘 要 】

The aim of this work is to validate the China Seismo-Electromagnetic Satellite 01 (CSES-01) Electric Field Detector (EFD) measurements through the analysis of the instrument response to various inputs: (a) geomagnetic field variations, (b) plasma density depletions, and (c) electromagnetic signals from natural and artificial sources such as Schumann resonance and VLF (Very Low Frequency) antennas. The knowledge of the geomagnetic induced electric field $v_s\times B$ (where $v_s$ is the satellite speed and B and the local magnetic field), and the plasma variations effect, described by the Orbit Motion Limited (OML) theory, are key parameters to determine the expected theoretical values of the EFD sensors potentials data. Based on the CSES on-board measurements of plasma parameters and geomagnetic field, a direct quantitative validation is presented. In addition, the electromagnetic signals detection capability is checked but only qualitatively confirmed, since the ionospheric complexity does not allow an accurate theoretical computation of waves modulation. The quantitative comparison highlights the very good agreement between observed and theoretical potentials values during average condition. Conversely, in case of strong electric fields, the OML theory shows partial inability in reproducing the actual space plasma conditions resulting in a reduced theoretical values reliability. Finally, both natural and artificial electromagnetic signals are satisfactorily identified showing a reliable sensitivity in different frequency bands.

【 授权许可】

Unknown