以最小二乘曲面拟合模型为背景场,利用南宁市区域CORS网实测数据,对Klobuchar模型的初始相位、振幅和夜间时延值不断改正,建立南宁市区域电离层延迟模型。结果表明,改进的Klobuchar模型精度有显著提高。
Taking the least squares surface fitting model as background field,and using accuracy measured data of the Nanning regional CORS network,we continue to correct the Klobuchar model of the initial phase,amplitude and night time delay values,in order to establish a Nanning region ionospheric delay model.The results show obvious improvement in the accuracy of the Klobuchar model.