【摘要】 为了解决航天测控网目前覆盖率低的问题,提出了一种具有易实现、低成本和高覆盖率等特点的新型航天测控网。同时,主要实现了利用网络时间协议对系统中的不同设备进行时钟同步。详细讨论了该系统的时钟同步体系结构,以及组成网络时间协议的数据过滤和选择等重要的工程化算法,并对网络时间协议进行了改进,提高了同步精度。该系统对于非航天普通测控网的建设也有较大参考价值。更多还原

【Abstract】 The new space TT&C(Tracking Telemetry and Command) network is presented in order to resolve the lower coverage problem in space TT&C network,which has more easy implementation,lower cost and wider coverage.The time of different equipments in this system is synchronized by Network Time Protocol.Moreover,the time synchronization architecture of the new space TT&C system and filtering and selection algorithms of NTP are analized.In order to keep the system accuracy,NTP is improved.The research can be used for time synchronization in general TT&C network.更多还原