# Retrospective Study on Seismic Ionospheric Anomalies Based on Five-Year Observations from CSES
## 2 Data Introduction and Processing Methods
### Data Introduction
\begin{table}
\begin{tabular}{c c c c c} \hline \hline
**Detection Objectives** & **Payloads** & **Parameters** & & **Performance** & **Status** \\ \hline \multirow{8}{*}{Electromagnetic field} & & & \(\bullet\) & ULF: DC–16 Hz, & \\  & & & & sampling rate: & \\  & & & 125 Hz; & \\  & & & \(\bullet\) & EPL: 6 Hz–2.2 kHz, & \\  & & & sampling rate: & \\  & & & 5 kHz; & \\  & & & \(\bullet\) & VLF: 1.8–20 kHz, & \\  & & & sampling rate: & \\  & & & 10 MHz; & \\ \hline \multirow{8}{*}{Electromagnetic field} & High-Precision & The geomagnetic field & & \\  & Magnetometer (HPM) & vector and scalar value & & DC–15 Hz & Good performance \\ \cline{1-1} \cline{2-5}  & & & \(\bullet\) & ULF: 10–200 Hz, & \\  & & & sampling rate: & \\  & & & 1024 Hz; & \\  & Search-Coil & The waveform and wave & & \(\bullet\) & ELF: 200–2200 Hz, & \\  & Magnetometer (SCM) & spectral value in ULF, ELF, VLF, and HF bands & & sampling rate: & Good performance \\  & & & 10.24 kHz; & \\  & & & \(\bullet\) & VLF: 18–20 kHz, & \\  & & & sampling rate: & \\  & & & 50 kHz; & \\ \hline \multirow{8}{*}{In situ ionospheric parameters} & & & \(\bullet\) & Ion density (H\({}_{+}\), \\  & & Ion density (H\({}_{+}\), O\({}_{+}\), He+); & & \(H\)+, O\({}_{+}\)): \(5\times 10^{2}\)– \\  & Plasma Analyzer Package & Ion temperature; & & \(1\times 10^{7}\) cm\({}^{-3}\); & \\  & (PAP) & Ion drift velocity (\(V_{x}\), \(V_{y}\), & \(1\times 10^{7}\) cm\({}^{-3}\); & \\  & & & \(V_{2}\)); & Ion temperature: & Contaminated in orbit \\  & & & 500–10,000 K; & \\ \cline{1-1} \cline{2-5}  & In situ ionospheric parameters & & & \(\bullet\) & Ionic drift velocity: \\  & & & & \(-3\cdot 3\) km/s; & \\ \cline{1-1} \cline{2-5}  & Langmuir Probe (LAP) & Electron density; & & \(5\times 10^{2}\)– \\  & Electron temperature; & & \(1\times 10^{7}\) cm\({}^{-3}\); & \\  & & Electron temperature: & & \\  & & & 500–10,000 K; & \\ \hline \multirow{8}{*}{Ionospheric structure parameters} & GNSS Occulation & TEC; Electron density & \(\textit{NmF2}\): \(5\times 10^{2}\)– & \\  & Receiver (GOR) & profile; \(\textit{NmF2}\); & & \(1\times 10^{7}\) cm\({}^{-3}\); & Good performance \\ \cline{1-1} \cline{2-5}  & & & \(\bullet\) & Relative TEC: 0–100 & \\ \cline{1-1} \cline{2-5}  & & & \(\bullet\) & TECU; & \\ \cline{1-1} \cline{2-5}  & Tri-Band Beacon (TBB) & Relative TEC; No Profile; & & TECU; & \\ \cline{1-1} \cline{2-5}  & Tri-Band Beacon (TBB) & Ionospheric scintillation index; & & Three bands: & The 400 MHz \\ \cline{1-1}  & & Ionosphere tomography; & & VHF 150 MHz, & \\ \cline{1-1} \cline{2-5}  & & & \(\bullet\) & UHF 400 MHz, & \\ \cline{1-1} \cline{2-5}  & & & \(\bullet\) & L 066 MHz; & \\ \hline \multirow{8}{*}{Energetic particle} & High-Energy Particle & & \(\bullet\) & Proton energy: & \\  & Package (HEPP) & Proton flux; & 2–200 MeV; & \\ \cline{1-1}  & & Electron flux; & \(\bullet\) & Electron energy: & \\ \cline{1-1} \cline{2-5}  & High-Energetic Particle & & \(\bullet\) & 0.1–100 MeV; & \\ \cline{1-1} \cline{2-5}  & Detector (HEPD) & & \(\bullet\) & \(\bullet\) & \\ \hline \end{tabular}
\end{table} 
Table 1: The status of the payloads onboard CSES-01.