)1 Institute of Earthquake Forecasting, China Earthquake Administration, Beijing 100036, China; [EMAIL_ADDRESS] (H.Y. ); [EMAIL_ADDRESS] (T.L. )1 Institute of Earthquake Forecasting, China Earthquake Administration, Beijing 100036, China; [EMAIL_ADDRESS] (H.Y. ); [EMAIL_ADDRESS] (T.L. )1 Institute of Earthquake Forecasting, China Earthquake Administration, Beijing 100036, China; [EMAIL_ADDRESS] (H.Y. ); [EMAIL_ADDRESS] (T.L. )1 Institute of Earthquake Forecasting, China Earthquake Administration, Beijing 100036, China; [EMAIL_ADDRESS] (H.Y. ); [EMAIL_ADDRESS] (T.L. )1 Institute of Earthquake Forecasting, China Earthquake Administration, Beijing 100036, China; [EMAIL_ADDRESS] (H.Y. ); [EMAIL_ADDRESS] (T.L. )1 Institute of Earthquake Forecasting, China Earthquake Administration, Beijing 100036, China; [EMAIL_ADDRESS] (H.Y. ); [EMAIL_ADDRESS] (T.L. )1 Institute of Earthquake Forecasting, China Administration, Beijing 100036, China; [EMAIL_ADDRESS] (H.Y. ); [EMAIL_ADDRESS] (T.L. )1 Institute of Earthquake Forecasting, China Earthquake Administration, Beijing 100036, China; [EMAIL_ADDRESS] (H.Y. ); [EMAIL_ADDRESS] (T.L. )1 Institute of Earthquake Forecasting, China Earthquake Administration, Beijing 100036, China; [EMAIL_ADDRESS] (H.Y. ); [EMAIL_ADDRESS] (T.L. )1 Institute of Earthquake Forecasting, China Earthquake Administration, Beijing 100036, China; [EMAIL_ADDRESS] (H.Y. ); [EMAIL_ADDRESS] (T.L. )1 Institute of Earthquake Forecasting, China Administration, Beijing 100036, China; [EMAIL_ADDRESS] (H.Y. ); [EMAIL_ADDRESS] (T.L. )1 Institute of Earthquake Forecasting, China Administration, Beijing 100036, China; [EMAIL_ADDRESS] (H.Y. ); [EMAIL_ADDRESS] (T.L. )1 Institute of Earthquake Forecasting, China Earthquake Administration, Beijing 100036, China; [EMAIL_ADDRESS] (H.Y. ); [EMAIL_ADDRESS] (T.L. )1 Institute of Earthquake Forecasting, China Earthquake Administration, Beijing 100036, China; [EMAIL_ADDRESS] (H.Y. ); [EMAIL_ADDRESS] (T.L. )1 Institute of Earthquake Forecasting, China Earthquake Administration, Beijing 100036, China; [EMAIL_ADDRESS] (H.Y. ); [EMAIL_ADDRESS] (T.L. )1 Institute of Earthquake Forecasting, China Administration, Beijing 100036, China; [EMAIL_ADDRESS] (H.Y. ); [EMAIL_ADDRESS] (T.L. )1 Institute of Earthquake Forecasting, China Administration, Beijing 100036, China; [EMAIL_ADDRESS] (H.Y. ); [EMAIL_ADDRESS] (T.L. )1 Institute of Earthquake Forecasting, China Administration Administration, Beijing 100036, China; [EMAIL_ADDRESS] (H.Y. ); [EMAIL_ADDRESS] (T.  
preceding seismic events have gradually become more and more attractive as modern air-born satellite receivers rise, for instance, Predvestnik-E in Russia in 2001, Quake Sat in America in 2003, DEMETER in France in 2004, SWARM in Europe in 2013, and so on. From then on, investigations of seismo-ionospheric influences have been focused on the quantitative temporal-spatial evolution of features instead of simple qualitative identifications of anomalies, as well as on the detailed LAI coupling process. The crucial properties of the seismo-ionospheric influence mainly include the occurrence time, location, and corresponding varying magnitude of the precursory signals. [PERSON] et al. [9] have presented that the occurrence probability of an ionospheric anomaly within 5 days is 73% for magnitude five earthquakes (EQs) and 100% for magnitude six ones, and the spatial scale of the ionospheric effect on strong EQs is near 20\({}^{\circ}\) in longitude, as well as in latitude. [PERSON] [10; 11] has reported that variations in ionospheric parameters registered via the DEMETER satellite before the real EQs increase apparently compared with those attained from randomly generated EQs. Utilizing different stages of DEMETER measurements of electrical fields, [PERSON] et al. [12; 13] and [PERSON] et al. [14; 15] have reported that a statistical ionospheric influence obviously appeared 4 h before strong EQs.