Feb 16, 2002 How to derive ion and wind velocity using tristatic measurements. (0) date.dat (1) ts2_tri.pro vtri870921cp1_2min.gdat3 plot_vtri.pro (draw a figure using vtri870921cp1_2min.gdat3) (2) E-field ts2_gup1.pro and then cal_E_cp1k.pro (should use 5min-data for CP1H) plot_E_cp1k.pro E870921cp1h_5min.gdat3 make_E_as.pro : make ASCII file (3) incf put incf-file at /EISCAT7. You can made incf-file with /EISCAT7/msallcut.pro (4) cal_utri.pro (read_vtri.pro, reload_vtri.pro, read_cp1_efile.pro) utri870921cp1_2min.gdat3 (5) plot_utri.pro (6) make_tri_as.pro