GEabbr.美国通用电气公司（=General Electric Coabbr.地面设备（=ground equipment）abbr.锗（=germanium）Geifiln.盖菲勒(在苏丹；东经 30º30' 北纬 13º10')

1. Several individual and combined techniques including BRTS,VLBI,CEI and GPS are presented and analyzed for tracking and orbit determination for geostationary satellites.
   介绍并分析了针对地球静止卫星的各种高精度测定轨跟踪技术。