jgg     2009 29 (5):  103-106    ISSN: 0412-1961  CN: 21-1139/TG A ESTIMATION METHOD FOR INTEGER PARAMETER RELIABILITY IN GPS Wang Yan;Wu Jicang; and Hu Congwei Department of Surveying and Geo-Informatics，Tongji University，Shanghai 200092 Received: 1900-01-01  Revised: 1900-01-01  Online: null Supporting info null