INFLUENCE OF SPACE LATITUDE ON DIFFERENTIAL IONOSPHERIC GRID SYSTEM
Feng Wei 1) ;Chen Xiangdong 1) ; Wu Xing 2,3) ; and Ye Xiusong 4)
1)Beijing Application and Development Center of RoundtheWorld Information, Beijing 100094;2)Beijing Special Type Engineering Design and Reasearch Institute, Beijing 100028;3)Naval Institute of Hydrographic Surveying and Charting, Tianjin 300061;4)Xi’an Satellite Control Center, Xi’an 710043
Abstract On the basis of the ionospheric gridcorrection data which are tested by widearea precise realtime positioning system. The ionospheric delay of the signal puncture point over the reference station is estimated by using two weighting methods. Futher more the estimated ionospheric grid delay of the signal puncture point has been compared with those tested in the actual measurement. For the stations located in different positions,in the middle or highlatitude the grid correction is better than that in lowlatitude. This result reveals that it is concerning to the characteristics of the ionosphere, but caused by weighted interpolation correction scheme.
