jgg     2009 29 (3):  95-99    ISSN: 0412-1961  CN: 21-1139/TG COMPARISON AMONG THREE SPATIOTEMPORAL FILTERINGMETHODS FOR REGIONAL GPS NETWORKS ANALYSIS Hu Shouchao; Wu Jicang ;and Sun Yafeng Department of Surveying and Geo-Informatics, Tongji University, Shanghai 200092 Received: 1900-01-01  Revised: 1900-01-01  Online: null Supporting info null