jgg     2012 32 (2):  44-46    ISSN: 0412-1961  CN: 21-1139/TG INTERPOLATION TECHNIQUE BASED ON RBF NEURALNETWORK OF GPS BROADCAST EPHEMERIS Tao Tingye 1,2,3) ; Gao Fei 1) ; Liu Wenxing 1) ; and Zhang Chunxi 1) 1)School of Civil and Hydraulic Engineering, Hefei University of Technology, Hefei 230009;2)GNSS Research Center，Wuhan University，Wuhan 430079;3)Beidou Key Laboratory of Anhui Province, Hefei 230088 Received: 1900-01-01  Revised: 1900-01-01  Online: null Supporting info null