Abstract：The statistics method, superposition analysis of periodical wave variance is applied innovatively to shortterm forecast of the ionospheric TEC and it is tested with ionospheric TEC data provided by IGS as measurements. The results calculated with data of 30 days, 40 days and 50 days respectively prove at different positions that the fitting precision is about 0.8 TECU, the conclusion of high precision with long data is not suitable and the forecast precision is related to longitude and latitude when the ionosphere is calm.
Gong Yan ,and Dang Yamin. STUDY ON IONOSPHERIC TEC SHORT-TERM FORECASTS WITH EXTRAPOLATION METHOD BASED ON VARIANCE ANALYSIS OF PERIODICAL WAVE SUPERPOSITION[J]. jgg, 2010, 30(5): 86-89.
