CAJ | 학술논문

单频精密单点定位时,利用不同映射函数,引入电离层参数在模型中进行实时电离层延迟估计,从而达到提高电离层误差修正的目的.通过对IGS跟踪站实测数据的计算,及与常规单层模型、Klobuchar模型和格网电离层模型结果的比较分析,验证了该方法的可行性和有效性.
단빈정밀단점정위시,이용불동영사함수,인입전리층삼수재모형중진행실시전리층연지고계,종이체도제고전리층오차수정적목적.통과대IGS근종참실측수거적계산,급여상규단층모형、Klobuchar모형화격망전리층모형결과적비교분석,험증료해방법적가행성화유효성.
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 real-time 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.