Design and implementation of a time synchronization method for payload based on packet switching
In order to solve the problem of limited time synchronization accuracy of payloads on spacecraft. A time synchronization method based on packet switching is proposed. The method realizes time synchronization of multi-payload with high reliability and high precision by step time compensation and freq...
| Main Authors: | , , |
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| Format: | Article |
| Language: | zho |
| Published: |
National Computer System Engineering Research Institute of China
2018-06-01
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| Series: | Dianzi Jishu Yingyong |
| Subjects: | |
| Online Access: | http://www.chinaaet.com/article/3000083564 |
| Summary: | In order to solve the problem of limited time synchronization accuracy of payloads on spacecraft. A time synchronization method based on packet switching is proposed. The method realizes time synchronization of multi-payload with high reliability and high precision by step time compensation and frequency correction. At the same time, the network scheduling control is carried out to ensure that the influence of synchronization period and network background traffic on the time synchronization accuracy is reduced to the minimum. In the experimental verification, the implementation of this method is combined with the fibre channel network on the Xilinx K7 FPGA board. A nanosecond time synchronization is achieved with a small amount of hardware and network resources. |
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| ISSN: | 0258-7998 |