An Enhanced Method of PTP Fiber Cascade Fine Time-frequency Synchronization

Qunxiong DAI; Qingru HAO; Zheng WANG; Zhaohui ZUO; Shinan WANG

doi:10.11999/JEIT191057

Volume 43 Issue 5

May 2021

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Article Navigation > Journal of Electronics & Information Technology > 2021 > 43(5): 1465-1471

Qunxiong DAI, Qingru HAO, Zheng WANG, Zhaohui ZUO, Shinan WANG. An Enhanced Method of PTP Fiber Cascade Fine Time-frequency Synchronization[J]. Journal of Electronics & Information Technology, 2021, 43(5): 1465-1471. doi: 10.11999/JEIT191057

Citation:

Qunxiong DAI, Qingru HAO, Zheng WANG, Zhaohui ZUO, Shinan WANG. An Enhanced Method of PTP Fiber Cascade Fine Time-frequency Synchronization[J]. Journal of Electronics & Information Technology, 2021, 43(5): 1465-1471. doi: 10.11999/JEIT191057

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An Enhanced Method of PTP Fiber Cascade Fine Time-frequency Synchronization

doi: 10.11999/JEIT191057

Qunxiong DAI^{1, 2
,
,},
Qingru HAO^{1, 2},
Zheng WANG^{1, 2},
Zhaohui ZUO^{1, 2},
Shinan WANG³

1.
The 54th Research Institute of CETC, Shijiazhuang 050081, China
2.
State Key Laboratory of Satellite Navigation System and Equipment Technology, Shijiazhuang 050081, China
3.
Fareast Huaqiang Navigation & Position Co., LTD., Shenzhen 518000, China

Funds: The National Natural Science Foundation of China (91638203), The National Key Research and Development Program (2016YFB0502102)

Received Date: 2019-12-31
Rev Recd Date: 2020-10-26

Available Online: 2020-12-11

Publish Date: 2021-05-18

Abstract

Abstract

In this paper, an enhanced method of PTP fiber cascade fine time-frequency synchronization is proposed. Based on the PTP synchronization technology, combined with the synchronous Ethernet clock transfer technology and the multi-level cascade fine clock synchronization technology based on the digital double mixing time difference method, the PTP technology is improved and enhanced. Then, based on this method, the multi-level time-frequency equipment fiber cascade is used to realize the multi node, large-span and networked time-frequency signal transmission and synchronous output can solve the problem that the synchronization accuracy deteriorates step by step under the condition of multi-level cascade, realizing the ns level system time synchronization accuracy, and ensuring the efficient synchronization and linkage of all parts of the system under the highly unified time scale. The feasibility and effectiveness of the method are verified by design and test.
- Time-frequency synchronization,
- PTP fiber cascade,
- Enhanced method,
- Synchronous Ethernet clock transfer,
- Digital double mixing time difference method

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References(23)

References

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