Abstract
We present two efficient approaches, namely the epoch-differenced (ED) and satellite- and epoch-differenced (SDED) approaches, for the estimation of IFCBs of the two Block IIF satellites. For the analysis, data from 18 stations from the IGS network spanning 96 d is processed. Results show that the IFCBs of PRN25 and PRN01 exhibit periodical signal of one orbit revolution with a magnitude up to 18 cm. The periodical variation of the IFCBs is modeled by a sinusoidal function of the included angle between the sun, earth and the satellite. The presented model enables a consistent use of L1/L2 clock products in L1/L5-based positioning. The algorithm is incorporated into the MGPSS software at SHAO (Shanghai Astronomical Observatory, Chinese Academy of Sciences) and is used to monitor the IFCB variation in near real-time.
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References
Odijk D. Ionosphere-free phase combinations for modernized GPS. J Survey Eng, 2003, 129(4): 165–173
Cocard M, Bourgon S, Kamali O, et al. A systematic investigation of optimal carrier-phase combinations for modernized triple-frequency GPS. J Geod, 2008, 82(9): 555–564
Feng Y. GNSS three carrier ambiguity resolution using ionosphere-reduced virtual signal. J Geod, 2008, 82(12): 847–862
Feng Y, Li B. Wide area real time kinematic decimetre positioning with multiple carrier GNSS signals. Sci China-Earth Sci, 2010, 53(5): 731–749
Li B, Feng Y, Shen Y. Three carrier ambiguity resolution: Distance-independent performance demonstrated using semi-generated triple frequency GPS signals. GPS Solut, 2010, 14: 177–184
Kim B, Tinin M. Potentialities of multifrequency ionospheric correction in global navigation satellite systems. J Geod, 2010, 85(3): 159–169
Datta-Barua S, Walter T, Blanch J, et al. Bounding higher-order ionosphere errors for the dual-frequency GPS user. Radio Sci, 2008, 43(5): RS5010
Montenbruck O, Hugentobler U, Dach R, et al. Apparent clock variations of the Block IIF-1 (SVN62) GPS satellite. GPS Solut, 2011, in press, doi: 10. 1007/s10291-011-0232-x
Montenbruck O, Hauschild A, Steigenberger P, et al. Three’s the challenge: A close look at GPS SVN62 triple-frequency signal combinations finds carrier-phase variations on the new L5. GPS World, 2010, 21(8): 1–8
Zumberge J F, Heflin M B, Jefferson D C, et al. Precise point positioning for the efficient and robust analysis of GPS data from large networks. J Geophys Res, 1997, 102 (B3): 5005–5017
Ge M, Chen J, Dousa J, et al. A computationally efficient approach for estimating high-rate satellite clock corrections in realtime. GPS Solut, 2011, 16: 9–17
Li H, Chen J, Wang J, et al. Network based real-time precise point positioning. Adv Space Res, 2010, 46(9): 1218–1224
Li H, Wang J, Chen J, et al. The realization and analysis of GNSS network based real-time precise point positioning. Chin J Geophys, 2010, 53(6): 1302–1307
Senior K, Ray J, Beard R. Characterization of periodic variations in the GPS satellite clocks. GPS Solut, 2008, 12(3): 211–225
Lacy M, Reguzzoni M, Sanso F. Real-time cycle slip detection in triple-frequency GNSS. GPS Solut, 2011, in press, doi: 10.1007/ s10291-011-0237-5
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Li, H., Zhou, X., Wu, B. et al. Estimation of the inter-frequency clock bias for the satellites of PRN25 and PRN01. Sci. China Phys. Mech. Astron. 55, 2186–2193 (2012). https://doi.org/10.1007/s11433-012-4897-0
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DOI: https://doi.org/10.1007/s11433-012-4897-0