Quantitative verification on satellite observational data of ionospheric structure parameters using ground-based data

Based on the previous research results, we used some statistical methods such as scatter plot, trend line, correlation coefficient and deviation to process the peak electron density (N_mF₂) data received by COSMIC satellite and SPIDR ground ionosonde. Both total data statistics and classified data statistics by season, local time and latitude are employed in order to carry out the research on quantitative verification on ionospheric structure parameters. The results show that the N_mF₂ of COSMIC satellite is consistent with the measured value of ionosonde with correlation coefficient 0.95 and average relative difference -3.38%, along with the standard deviation 19.54%. Based on the study, the verification method of N_mF₂ observed by satellite is given, and the qualitative and quantitative criteria are also provided, which will ensure the quality of N_mF₂ observed by China Seismo-Electromagnetic Satellite (CSES).