[1] [1] PARKINSON B W, SPILKER J J. Global progress sSystem: theory and application［M］. Aeronautics: American Institute of Aeronautics & Ast, 1996: 3-28.

[2] [2] GIOVANNETTI V, LIOYD S, MACCONE L. Quantun-enhanced positioning and clock synchronization［J］. Nature, 2001, 412(6845): 417-419.

[3] [3] GIOVANNETTI V, LIOYD S, MACCONE L. Positioning and clock synchronization through entanglement［J］. Phys Rev A, 2002, 65(2): 022309.

[4] [4] BAHDER T B. Quantum Positioning System［EB/OL］. Cornell, Tex: Cornell University Library, 2004. arXiv:quant-ph/0406126v1.

[5] [5] CHUANG I L. Quantum algorithm for distributed clock synchronization［J］. Phys Rev Lett, 2000, 85(9): 2006-2009.

[6] [6] LIU Xiao-sha, LONG Gui-lu, TONG Dian-min. Simultaneous space and time synchronization using shared entangled qubits［J］. Theor Phys, 2003, 40(3): 45- 47.

[7] [7] ZHANG Jing-fu, LONG Gui-lu, DENG Zhi-wei, et al. Nuclear magnetic resonance implementation of a quantum clock synchronization algorithm［J］. Phys Rev A, 2004, 70(6): 062322.

[8] [8] BAHDER T B, WILLIAM M. Golding clock synchronization based on second-order quantum coherence of entangled photons［J］. AIP Conf Proc, 2004, 734: 395-398.

[9] [9] BURGH M D, BARTLETT S D. Quantum methods for clock synchronization:Beating the standard quantum limit without entanglement［J］. Phys Rev A, 2005, 72(4): 042301.

[10] [10] HWANG W Y, AHN D, HWANG S W, et al. Entangled quantum clocks for measuring proper-time difference［J］. Eur Phys J D, 2002, 19(1): 129-132.

[11] [11] VALENCIA A, SCARCELLI G, SHIH Y. Distant clock synchronization using entangled photon paires［J］. Appl Phys Lett, 2004, 85(13): 2655-2657.

[12] [12] RUBIN M H, KLYSHKO D N, SHIH Y H, et al. Theory of two-photon entanglement in type-II optical Parametric down-conversion［J］. Phys Rev A, 1994, 50(6): 5122-5133.

[13] [13] GLAUBER R J. The quantum theory of optical coherence［J］. Phys Rev, 1963, 130(6): 2529-2539.

[14] [14] GRICE W P, WALMSLEY I A.Spectral information and distinguishability in type-II down -conversion with a broadband pump［J］. Phys Rev A, 1997, 56(2): 1627-1634.

[15] [15] PERINA J, JOST B M, SERGIENKO A V, et al. Dispersion in femtosecond entangled two-photon interference［J］. Phys Rev A, 1998, 59(3): 2359-2368.

[16] [16] YANG Chun-yan, WU De-wei, XU Yong-lin, et al. Research on optimai constellation distribution of Interferometric Quantum Positioning System［J］. Bulletin of Surveying and Mapping, 2009, 12: 1-6.