支持交会对接任务精密时间基准方法研究与实现

Research and Implementation of Precise Time Reference Method to Support Rendezvous and Docking Mission

在交会对接载人飞行器综合测试过程中,为了实现多飞行器协同工作,需要对多航天器同步实时模拟航天器在轨交会对接过程中的飞行状态及时序,这就对航天器和测试系统间的协调匹配性提出了很高的要求,系统时间基准精度要求尤为突出;地面测试设备需要有一个统一、高精度的时间标准,作为测试数据、测试指令的参考,是准确测量船载频率标准的关键所在,在整船综合测试过程中,对时间基准和时间基本修正方法进行了研究,采用了时间精度同步算法关键技术和方法,以保证时间的准确性和一致性;经实际应用高精度时间精准方法及系统设计,满足交会对接载人航天器工程上的应用,保证精密时间基准系统功能、精度能满足测试要求,为载人航天器可靠性验证提供极为重要的辅助手段。

In the integrated test process of rendezvous and docking spacecraft,in order to achieve the cooperative work of multiple spacecraft,it is necessary to simulate the flight state and sequence of the spacecraft in the process of rendezvous and docking in real time,which puts forward high requirements for the coordination and matching between the spacecraft and the test system,especially for the system time benchmark accuracy.The ground test equipment needs to have a unified and high-precision time standard.As a reference of test data and test instructions,it is the key to accurately measure the shipborne frequency standard.In the process of comprehensive test of the whole ship,the time benchmark and the basic time correction method are studied,and the key technology and method of time accuracy synchronization algorithm are adopted to ensure the accuracy and accuracy of time Causative.Through practical application of high-precision time precision method and system design,it can meet the application of rendezvous and docking manned spacecraft engineering,ensure that the function and precision of precision time reference system can meet the test requirements,and provide a very important auxiliary means for the reliability verification of manned spacecraft.