CAJ | 학술논문

研究了WAAS卫星导航系统的格网电离层改正方法,分析了中国区域电离层分布特性,根据中国区域内稀疏布站的条件,MEO卫星和GEO卫星运动特点,以及C波段GEO卫星电离层延迟特性,提出了利用距离幂指数权重内插进行电离层延迟改正的方法。使用IGS公布的电离层数据,分别利用格网电离层权重方法和距离幂指数权重内插法进行Matlab仿真计算。然后,将结果与IGS事后精密产品进行比较,证明在中国区域内稀疏布站条件下,距离幂指数权重内插法对于电离层延迟具有较理想的改正效果。
연구료WAAS위성도항계통적격망전리층개정방법,분석료중국구역전리층분포특성,근거중국구역내희소포참적조건,MEO위성화GEO위성운동특점,이급C파단GEO위성전리층연지특성,제출료이용거리멱지수권중내삽진행전리층연지개정적방법。사용IGS공포적전리층수거,분별이용격망전리층권중방법화거리멱지수권중내삽법진행Matlab방진계산。연후,장결과여IGS사후정밀산품진행비교,증명재중국구역내희소포참조건하,거리멱지수권중내삽법대우전리층연지구유교이상적개정효과。
The grid ionospheric correction method of WAAS satellite navigation system is studied, and the distribution characteristics of China’s regional ionospheric are analyzed. According to the China region sparse distribution station conditions, MEO and GEO satellites motion characteristics, as well as C-band GEO satellite ionospheric delay characteristics, the use of distance exponential weighting inter-polation ionospheric delay correction method is proposed. IGS published ionospheric data, respectively, using the grid ionospheric weighting method and distance exponential weighting interpolation method for Matlab simulation, then contrast with IGS afterwards sophisticated products on the simulation results, the results proof that the distance exponential weighting interpolation method for ionospheric delay correction has effect with a more ideal in the Chinese region sparse distribution station conditions.