[1] FABRIZIO R G, WILLIAM C S, LAURA C S et al. Optical two-way time and frequency transfer over free space[J]. Nature Photonics, 7, 435-439(2013).

[2] HE Yabai, BALDWIN K G H, ORR B J et al. Long-distance telecom-fiber transfer of a radio-frequency reference for radio astronomy[J]. Optica, 5, 138(2018).

[3] USHIJIMA I, TAKAMOTO M, DAS M et al. Cryogenic optical lattice clocks[J]. Nature Photonics, 9, 185-189(2015).

[4] MCGREW W F, ZHANG Xiaogang, FASANO R J et al. Atomic clock performance enabling geodesy below the centimetre level[J]. Nature, 564, 87-90(2018).

[5] LOPEZ O, AMY-KLEIN A, DAUSSY C et al. 86-km optical link with a resolution of 2×10-18 for RF frequency transfer[J]. The European Physical Journal D, Atomic, Molecular, and Optical Physics, 48, 35-41(2008).

[6] HU Liang, TIAN Xueyang, WU Guiling et al. Passive optical phase noise cancellation[J]. Optics Letters, 45, 4308-4311(2020).

[7] LI Qi, HU Liang, ZHANG Jinbo et al. Fiber radio frequency transfer using bidirectional frequency division multiplexing dissemination[J]. IEEE Photonics Technology Letters, 33, 660-663(2021).

[8] LI Qi, HU Liang, ZHANG Jinbo et al. Multiple-access relay stations for long-haul fiber-optic radio frequency transfer[J]. Optics Express, 30, 18402-18414(2022).

[9] HOU Dong, LI Peng, LIU Cheng et al. Long-term stable frequency transfer over an urban fiber link using microwave phase stabilization[J]. Optics Express, 19, 506-511(2011).

[10] YAN Jilei, LI Jiandong, ZHAO Linjing et al. Robust joint transmit beamforming with QoS guarantees in time-asynchronous DAS[J]. IEEE Transactions on Vehicular Technology, 64, 1506-1518(2015).

[11] STEINBERG B D. Phase synchronizing a nonrigid, distributed, transmit-receive radar antenna array[J]. IEEE Transactions on Aerospace and Electronic Systems, 609-620(1982).

[12] YANG Yang, BLUM R S. Phase synchronization for coherent MIMO radar: algorithms and their analysis[J]. IEEE Transactions on Signal Processing, 59, 5538-5557(2011).

[13] GODRICH H, HAIMOVICH A M, BLUM R S. Target localization accuracy gain in MIMO radar-based systems[J]. IEEE Transactions on Information Theory, 56, 2783-2803(2010).

[14] NG B P, LIE J, ER M H et al. A practical simple geometry and gain/phase calibration technique for antenna array processing[J]. IEEE Transactions on Antennas and Propagation, 57, 1963-1972(2009).

[15] DEBOER D R, GOUGH R G, BUNTON J D et al. Australian SKA pathfinder: a high-dynamic range wide-field of view survey telescope[J]. Proceedings of the IEEE, 97, 1507-1521(2009).

[16] WU Rui, YANG Fei, SUN Yangguang et al. Absolutely consistent fiber-optic phase synchronization based on fixed-phase-reference optical active compensation[J]. IEEE Photonics Journal, 13, 1-11(2021).

[17] SI Hongwei, WANG Bo, WANG Fangming et al. Absolute phase synchronization over optical fiber[J]. Optics Express, 28, 4603-4610(2020).

[18] WU Rui, YANG Fei, SUN Yanguang et al. Absolute phase marking technology and fiber-optic remote coherent phase transmission[J]. Optics Express, 29, 14041-14057(2021).

[19] PANEK P. Time-interval measurement based on SAW filter excitation[J]. IEEE Transactions on Instrumentation and Measurement, 57, 2582-2588(2008).

[20] ZHU Gege. Research on high-precision time interval measurement based on SAWF[D], 23-32(2018).

[21] WANG Jialiang, YUE Chaolei, XI Yueli et al. Fiber-optic joint time and frequency transfer with the same wavelength[J]. Optics Letters, 45, 208-211(2020).

[22] YIN Feifei, WU Zongle, DAI Yitang et al. Stable fiber-optic time transfer by active radio frequency phase locking[J]. Optics Letter, 39, 3054-3057(2014).

[23] YU Longqiang, LU Lin, SHI Lei et al. Simultaneous time and frequency transfer over 100 km optical fiber based on sub-carrier modulation[J]. Optics Communications, 427, 335-340(2018).

[24] LI Xi[M]. Design of the UWB narrow pulse generator, 37-39(2018).