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高级西联星/跟踪和数据中继卫星系统(下文简称为AW/TDRSS系统)是美国航宇局与西联空间通信公司联合经营的卫星系统。这个系统将肩负着西联公司的国内通信以及为航宇局低轨道卫星提供跟踪和数据中继业务的双重任务。在卫星上都装有执行上述任务的天线和转发器,因此它是迄今最复杂的卫星。整个系统的空间部分由四颗卫星组成:即一颗西联公司专用的高级西联星(定点于西经91°),两颗航宇局专用的TDRS卫星(分别定点于
The Advanced Western Union / Tracking and Data Relay Satellite System (hereinafter referred to as the AW / TDRSS System) is a satellite system jointly operated by NASA and Western Union Space Communications Corporation. The system will have the dual responsibility of Western Union’s domestic communications and tracking and data relay operations for NASA LEO satellites. The satellites are equipped with antennas and transponders to perform the above tasks, making them the most sophisticated satellite to date. The space portion of the system consists of four satellites: a high-level Western Union star dedicated to Western Union Corporation (fixed at 91 ° W) and two TARS dedicated NASA satellites