jgg     2013 33 (5):  136-139    ISSN: 0412-1961  CN: 21-1139/TG ANALYSIS ON HEIGHT TIME SERIES OF IGS BASED ON RBF AND  FILTERING NEURAL NETWORK School of Geomatics, Liaoning Technical University, Fuxin 123000 Received: 2013-01-20  Revised: null  Online: 2013-10-13 Supporting info