Quality of Dual Frequency Ionospheric Real Time Corrections

Evelin Engler, A. Jungstand, D. Klahn

Abstract:	The paper describes the evaluation of the quality of ionospheric corrections as derived in real time by the TEC monitoring station in Neustrelitz. The principles of the real time TEC estimation technique will be summarized briefly. The main intention is to demonstrate the performance of the TEC monitoring station under various ionospheric conditions to illustrate the potential and the error budget of the developed algorithm. It will be shown that the main error effect is due to the multipath propagation, both in real time and in postprocessed TEC estimations methods, if the instrumental delays due to satellites and receivers are corrected to the known degree of accuracy. The accuracy and stability of the real time method will be proven by comparing real time results with postprocessed results, gained from a wide spread reference network. The evaluation of the accuracy of the real time results will be done while keeping track of the complete error budgets of the real time and postprocessed TEC. After all, the accuracy of the vertical real time TEC values turned out to be better than 3 TECU in 8599% of all observations, provided the distance from the TEC monitoring station is smaller than 1000 km. In case of geomagnetic storms the same accuracy can be reached at, if the distance to the monitoring station is reduced to about 500 km.
Published in:	Proceedings of the 52nd Annual Meeting of The Institute of Navigation (1996) June 19 - 21, 1996 Royal Sonesta Hotel Cambridge, MA
Pages:	157 - 165
Cite this article:	Engler, Evelin, Jungstand, A., Klahn, D., "Quality of Dual Frequency Ionospheric Real Time Corrections," Proceedings of the 52nd Annual Meeting of The Institute of Navigation (1996), Cambridge, MA, June 1996, pp. 157-165.
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