jgg     2010 30 (2):  113-116    ISSN: 0412-1961  CN: 21-1139/TG INTERVAL ADAPTIVE ALGORITHM FOR GPS/INSINTEGRATED NAVIGATION SYSTEM Le Yang ;and He Xiufeng College of Civil Engineering, Hohai University, Nanjing 210098 Received: 1900-01-01  Revised: 1900-01-01  Online: null Supporting info null