Abstract：In single frequency precise point positioning, ionospheric delay is one of the most important factors impacting the positioning accuracy.Because of the instability of the ionosphere and the fuzziness of the research of physical properties, the positioning accuracy is seriously limited when using the precision limited model for the correction. In order to eliminate the ionosphere error, it is proposed to introduce ionosphere parameter for realtime ionospheric delay estimation by applying different mapping functions. Through the calculation of measurement data from the IGS tracking station and the comparison among the results from the single model, Klobuchar model and the grid ionosphere model, the feasibility and effectiveness of the new method are verified.In the experiments, different mapping functions and the ionosphere parameters are selected and some significant conclusions are drawn.
Tu Rui,Zhang Qin,and Huang Guanwen. ON IONOSPHERIC DELAY PROCESSING METHODS FORSINGLE FREQUENCY PRECISE POINT POSITIONING[J]. jgg, 2010, 30(2): 99-103.
