Unlike other Yuanwang space tracking ships, Yuanwang 4 lacks the ability to control the spacecraft, and serves mainly for spacecraft tracking and communications relay roles.

不像其它的远望航天跟踪船，远望4号缺乏能力控制航天器，并且服务主要用于航天器跟踪和通信中继角色。

youdao

The attitude tracking control of spacecraft is demanded in many missions.

许多空间飞行任务要求航天器姿态跟踪控制。

youdao

For rigid spacecraft attitude tracking system with uncertain inertia matrix and external disturbances, an adaptive sliding mode approach is presented.

针对存在不确定惯量矩阵和外干扰的刚体航天器姿态跟踪系统，提出了一种自适应滑模控制方法。

youdao

Canberra, Australia and Madrid, Spain, DSN is tracking some 35 spacecraft with a success rate of better than 98 percent.

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Both spacecraft make use of the US space agency's Tracking and Data Relay Satellite System (TDRSS) to speak to the ground and controllers do not want any conflicts.

BBC: Total cargo: 4,860kg