With the increase of space target activities and satellite navigation systems, there are more and more ways to observe ionospheric data, and the detection accuracy is also higher and higher. Based on the Kalman filter, this paper uses the IRI-2016 ionospheric vertical total electron content (VTEC), and combined with the VTEC value obtained from the ground-based inversion, and the data fusion algorithm to improve the near-real-time inversion accuracy of the ionospheric VTEC. This paper observes the high-latitude area near Canada (${130^ \circ