jgg     2010 30 (2):  76-79    ISSN: 0412-1961  CN: 21-1139/TG EFFECT OF GPS STOCHASTIC MODEL ON SINGLE EPOCH AMBIGUITY RESOLUTION Chen Yubo,;Yang Wentao ;and Dai Wujiao Department of Survey Engineering and Geomatics, Central South University, Changsha 410083 Received: 1900-01-01  Revised: 1900-01-01  Online: null Supporting info null