Establishment of Region Ionospheric Delay Model in Nanning Based
on Improved Klobuchar Model
1 Guangxi Scientific Experiment Center of Mining, Metallurgy and Environment, 12 Jiangan Road, Guilin 541004, China
2 College of Geomatic Engineering and Geoinformatics, Guilin University of Technology, 12 Jiangan Road, Guilin 541004, China
3 Guangxi Key Laboratory of Spatial Information and Geomatics, 12 Jiangan Road, Guilin 541004, China
Abstract：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.