载人航天器相控阵天线中继终端自主建链方法OA

Phased array antenna relay terminals have become the primary means of space-ground tracking,telemetry,and command(TT&C)and communications for the manned spacecraft.When a manned spacecraft encounter unexpected power outages or equipment resets,the ability of the relay terminal to autonomously recover and re-establish the link with the relay satellites be-comes critical for fault handling.To address this issue,an autonomous link establishment meth-od based on the rapid beam scanning characteristics of phased array antenna,is proposed.The phase array antenna relay terminal autonomously selects and tracks the relay satellites using the position information of the manned spacecraft,and rapidly identifies the current active relay sat-ellite by determining whether the forward link can be locked.This method establishes both the forward and return links,thereby achieving the autonomous recovery of the relay link without human intervention,providing convenience for emergency fault handling.Ground and in-orbit verification results have shown that this method is flexible and effective,significantly enhancing the reliability of manned spacecraft in orbit.