Mengistu, Gizaw (Professor)Bekele, Kebede2018-06-272023-11-092018-06-272023-11-092015-06http://10.90.10.223:4000/handle/123456789/4060An empirical electron density model, quick-run ionospheric electron (NeQuick), has been selected for the modelling of the ionospheric electron density pro le. NeQuick iono- spheric electron density model produces the full electron density pro le in the ionosphere. The electron density pro les (EDP) from NeQuick model before and after ingestion of the ionosonde key parameters (foE, hmE, foF2 and hmF2) have been compared with ionosonde electron density pro le for bottom side ionosphere from HF-viper radar in- stalled at Welmera site. The comparisions show that the NeQuick model after ingestion of key parameters from ionosonde generally agrees well with the ionosonde observation. The root mean square deviation (RMSD) and correlation coe cient (R) for the two data sets are computed for the selected time. The RMSD of the NeQuick model after ingestion of ionosonde key parameters are lower than those values before ingestion of ionosonde key parameters. The computed correlation coe cients (R) also show an existence of stronger relationship after ingesting ionosonde key parameter values than those values before ingesting ionosonde key parameter valuesenValidation of Nequick Model usingThesis