jgg     2013 33 (5):  150-153    ISSN: 0412-1961  CN: 21-1139/TG APPLICATION OF BP NEURAL NETWORK IN POINTING ERROR  MODELING OF SATELLITE LASER RANGING TELESCOPE Key Laboratory of Earthquake Geodesy, Institute of Seismology, CEA, Wuhan〓430071 Received: 2012-12-23  Revised: null  Online: 2013-10-13 Supporting info