跟踪及数据中继卫星系统的正反向通信链路

TDRSS Forward Link and Return Link

本文讨论跟踪及数据中继卫星系统（ＴＤＲＳＳ）的正反向通信链路。包括：１）Ｓ波段多址勤务链路的相控阵天线地面多波束形成及自适应对准；２）把ＴＤＲＳ上的３０个单元天线的接收信号传回地面并保证各路之间相对相位、振幅的稳定；３）Ｋｕ波段单址勤务链路中ＴＤＲＳ与用户飞行器天线相互捕获与跟踪；４）扩频—测距码的快捕。

s:This paper discusses TDRSS forword link and return link. The main contents are:1,To use an on-board 30 elements phase array antenna to form S-band multiple beams for the TDRSS return link S-band multiple access(SMA) service.2,The signal received by each element is relayed to ground station by FDM communication subsystem which can ensure the stability of relative phase and amplitude of element signals.3.The acquisition and tracking of the antennas of TDRSS and user for Ku-band single access(KuSA) service .4,The fast acquisition of spread spectrum-ranging code.