载人航天器测控与通信分系统安全工作模式设计

Design on TT&C and Communications Subsystem Security Working Mode of Manned Spacecraft

从载人航天器测控与通信分系统链路资源出发,提出了基于地面S频段测控及导航信号接收链路全向覆盖,宽波束中继链路自主组阵,窄波束中继天线自主跟踪的测控与通信分系统安全工作模式,确保任何情况下测控通信链路都能够稳定建立,特别是在载人航天器出现异常掉电又恢复后,测控与通信分系统能够自动恢复高、低速天地链路,确保载人航天器安全工作。该模式设计经过地面测试验证和在轨飞行验证,既能够满足正常飞行时链路余量大于3dB的要求,又有效减少了紧急情况下载人航天器对地面的依赖,取得了良好的在轨应用效果。

Based on the TT&C(tracking,telemetry and command)and communications subsystem link resources of the manned spacecraft,a security working mode design for TT&C and communications subsystem is proposed.The S-band TT&C and navigation signal receiving link antennas are combined by the microwave network to get the omni antenna array at all times,the wide band data relay antennas can be combined automatically when the manned spacecraft is rolling,the narrow band data relay antenna can track the relay satellites automatically when the manned spacecraft is broken down.This design insures the space-ground link stable even if the manned spacecraft is powered down and powered on again when out of control.This mode design has been tested on the ground and onboard mission.The requirement that link margin must be bigger than 3dB can be achieved,and the space-ground link reconnections do not depend on the ground operations.A good application effect has been achieved through onboard testing.