Rinex星历:ftp://cddis.gsfc.nasa.gov/pub/gps/data/daily/2010/016/10n/
YUMA星历:http://www.navcen.uscg.gov/GPS/almanacs.htm
http://www.navcen.uscg.gov/archives/gps/2010/ALMANACS/YUMA/
http://www.navcen.uscg.gov/?pageName=currentAlmanac&format=yuma-txt
IGS精密星历(sp3):
ftp://igscb.jpl.nasa.gov/pub/product
要以igs开头且sp3格式,sp3精密星历里面的坐标与WGS-84差别不大,可以视为一样的。
IGS基准测站信息:http://igscb.jpl.nasa.gov/network/list.html,坐标在current site log里面。
在线预报:
http://www.navcomtech.com/Support/Tools/satellitepredictor/main.cfm
Trimble星历软件:http://www.trimble.com/planningsoftware.shtml
Topcon星历软件:http://www.topconpositioning.com/products/software/utilities/
Leica星历软件:http://www.leica-geosystems.com/corporate/en/downloads/lgs_page_catalog.htm?cid=2930
另外NAVCOM Tech公司提供了一种在线星历预报工具:http://www.navcomtech.com/Support/Tools/satellitepredictor/main.cfm