Design and Implementation of Spacecraft Network System Based on Dual-Information
Zhenhao Zhao, Xiangjun He, Fuping Liu, Zhou Li, Zhao Cheng, Yanwei Liu, Yanchao Gao · 2024
With the development of wireless communication technology and the popularization of Ethernet technology, Ethernet technology is used by more and more spacecrafts to transmit high-speed data. Different from the commercial Ethernet system on the ground, the spacecraft network system design is faced with more problems, such as limitations on weight and power consumption of switches, difficulty in fault diagnosis and recovery on-site, and the influence of the operation mode of the space-ground communication system on the network performance, which limit the application of Ethernet technology on spacecraft. In order to solve the aforementioned problems, a network system design method based on dual information system is proposed, which coordinates the spacecraft network system and the space-ground communication system, enriches the fault diagnosis and disposal methods of the spacecraft network system, and improves the testability and reliability of the system. The effectiveness of the proposed method is proved by software simulation and on-orbit application of spacecraft.