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- Title
Automatic Identification and Statistical Analysis of Data Steps in Electric Field Measurements from CSES-01 Satellite.
- Authors
Huang, Jianping; Li, Zongyu; Li, Zhong; Li, Wenjing; Conti, Livio; Lu, Hengxin; Zhou, Na; Han, Ying; Liu, Haijun; Chen, Xinfang; Chen, Zhaoyang; Song, Junjie; Shen, Xuhui
- Abstract
The spaceborne Electric Field Detector (EFD) is one of the payloads of the China Seismo-Electromagnetic Satellite (CSES-01), which can measure electric field data at near-Earth orbit for investigating fundamental scientific topics such as the dynamics of the top-side ionosphere, lithosphere–atmosphere–ionosphere coupling, and electromagnetic field emissions possibly associated with earthquake occurrence. The Extremely Low-Frequency (ELF) waveform shows anomalous step variations, and this work proposes an automatic detection algorithm to identify steps and analyze their characteristics using a convolutional neural network. The experimental results show that the developed detection method is effective, and the identification performance reaches over 90% in terms of both accuracy and area under the curve index. We also analyze the rate of the occurrence of steps in the three components of the electric field. Finally, we discuss the stability of the statistical results on steps and their relevance to the probe's function. The research results provide a guideline for improving the quality of EFD data, and further applications in monitoring the low-Earth electromagnetic environment.
- Subjects
ELECTRIC field strength; CONVOLUTIONAL neural networks; STATISTICS; DATA analysis; ELECTROMAGNETIC fields; STATISTICAL measurement; AUTOMATIC identification; ELECTRIC fields
- Publication
Remote Sensing, 2023, Vol 15, Issue 24, p5745
- ISSN
2072-4292
- Publication type
Article
- DOI
10.3390/rs15245745