INAG-GASS2017_04_NICT-Ionospheric-Obseravtion_TT.pdf

Here is some information on Korea partnering with Japan in Viper Program @
SGM Matthew Quick COL Mikel J. Burroughs SGT (Join to see) Maj (Join to see) SGM (Join to see) SGT David A. 'Cowboy' Groth MSG Mario Franco SP5 Mark Kuzinski SGT (Join to see) Col (Join to see) Region # of GPS Rec. Detrended TEC Map (60-min Window)
Regional Dense GNSS Receiver Networks N. America ~2,700 receivers Europe ~1,200 receivers
JAPAN ~1,200 receivers