公开(公告)号：US08116976B2

公开(公告)日：2012-02-14

申请号：US11835300

申请日：2007-08-07

申请人： Lionel J. Garin ,  Kurt C. Schmidt

发明人： Lionel J. Garin ,  Kurt C. Schmidt

IPC分类号： H04B7/185

CPC分类号： G01S19/06 ,  G01S1/00 ,  G01S19/09 ,  G01S19/24 ,  G01S19/258 ,  G01S19/26 ,  G01S19/42 ,  G06G7/78

摘要： A satellite based positioning method and system including storing satellite sub-almanac data on a mobile station. Embodiments include using the sub-almanac data to take measurements and calculate a coarse position of the mobile station. Embodiments further include a location server calculating a correction to the coarse position, and the location server determining whether any sub-almanacs used to calculate the coarse position require replacement.