Research on Full-duplex Two-Way Time Transfer Techniques for Flying Ad Hoc Networks

CHEN Cong; XU Qiang; ZHAO Hongzhi; SHAO Shihai; TANG Youxi

doi:10.11999/JEIT230949

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CHEN Cong, XU Qiang, ZHAO Hongzhi, SHAO Shihai, TANG Youxi. Research on Full-duplex Two-Way Time Transfer Techniques for Flying Ad Hoc Networks[J]. Journal of Electronics & Information Technology. doi: 10.11999/JEIT230949

Citation:

CHEN Cong, XU Qiang, ZHAO Hongzhi, SHAO Shihai, TANG Youxi. Research on Full-duplex Two-Way Time Transfer Techniques for Flying Ad Hoc Networks[J]. Journal of Electronics & Information Technology. doi: 10.11999/JEIT230949

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Research on Full-duplex Two-Way Time Transfer Techniques for Flying Ad Hoc Networks

doi: 10.11999/JEIT230949

CHEN Cong^{1, 2},
XU Qiang^{1, 2},
ZHAO Hongzhi^{1, 2},
SHAO Shihai^{1, 2
,
,},
TANG Youxi¹

1.
National Key Laboratory of Wireless Communications, University of Electronic Science and Technology of China, Chengdu 611731, China
2.
Laboratory of Electromagnetic Space Cognition and Intelligent Control, Beijing 100089, China

Funds: The National Natural Science Foundation of China (U19B2014, 62071094, 61901396)

Received Date: 2023-08-31
Rev Recd Date: 2023-12-05

Available Online: 2023-12-13

Abstract

Abstract

In order to solve the problems of time synchronization accuracy degradation of two-way time transfer due to relative motion between nodes in Flying Ad hoc NETwork (FANET), a full-duplex Two-Way Time Transfer (TWTT) method is proposed. Firstly, a system of equations to be solved is constructed according to the full-duplex two-way time transfer procedure, and the synchronization error expression for single full-duplex two-way time transfer is derived. Then, the convergence of iteratively performing full-duplex two-way time transfer with or without frequency offset is analyzed. Finally, the performance of full-duplex two-way time transfer method is compared with traditional two-way time transfer methods by simulation analysis and experimental validation. The simulation and experimental results show that full-duplex two-way time transfer method can achieve the same time synchronization accuracy as the physical layer timestamps under high-speed maneuvering between nodes, and the synchronization accuracy is better than the existing motion compensation methods.
- Flying Ad hoc NETwork (FANET),
- In-Band Full Duplex (IBFD),
- Two-Way Time Transfer (TWTT),
- Asymmetric propagation delay

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References(19)

References

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