4 Li P J, Hu X G, Huang Y, et al. Orbit determination for Chang'E-2 lunar probe and evaluation of lunar gravity models. Sci China Phys Mech Astron, 2012, 55: 514-522
15 Hirt C. Automatic determination of vertical deflections in real-time by combining GPS and digital zenith camera for solving the GPS-height-problem. In: Proceedings of the 14th International Technical Meeting of The Satellite Division of the Institute of Navigation, 2001 Sep 10, Alexandria, VA. Salt Lake City, 2001. 2540-2551
[9]
17 Gerstbach G, Pichler H. A small CCD zenith camera (ZC-G1)-developed for rapid geoid monitoring in difficult projects. Publications of the Astronomical Observatory of Belgrade, 2003, 75: 221-228
[10]
18 Hirt C, Seeber G. High-resolution local gravity field determination at the sub-millimeter level using a Digital Zenith Camera System. In: Tregoning P, Rizos C, eds. Proceedings of Dynamic Planet, 2005 Aug 22-26, Cairns. Berlin Heidelberg: Springer Verlag, 2006. 316-321
[11]
19 Hirt C, Seeber G. Accuracy analysis of vertical deflection data observed with the Hannover Digital Zenith Camera System TZK2-D. J Geodesy, 2008, 82: 347-356
[12]
20 Somieski A E. Astrogeodetic geoid and isostatic considerations in the North Aegean Sea, Greece. Doctor Dissertation. Zurich: ETH, 2008
[13]
21 Hirt C, Bürki B. The Digital Zenith Camera—A new high-precision and economic astrogeodetic observation system for real-time measurement of deflections of the vertical. In: Tziavos I, ed. Proceedings of the 3rd meeting of the International Gravity and Geoid Commission of the IAG, 2002 Aug 26-30, Thessaloniki. Thessaloniki: Editions Ziti, 2003. 161-166
[14]
22 Hirt C, Reese B, Enslin H. On the accuracy of vertical deflection measurements using the high-precision Digital Zenith Camera System TZK2-D. In: Jekeli C, Bastos L, Fernandes J, eds. Proceedings of GGSM 2004 IAG International Symposium, 2004 Aug 30-Sep 3, Porto. Berlin Heidelberg: Springer Verlag, 2005. 197-201
[15]
26 Haralick R M, Shapiro L G. Computer and Robot Vision. Massachusetts: Addison Wesley, 1993
[16]
27 Stone R C. A comparison of digital centering algorithms. Astron J, 1989, 97: 1227-1237
[17]
30 Peng Q Y, Han Y B, Zhang C L, et al. Image-processing techniques in precisely measuring positions of Jupiter and its Galilean satellites. Astron Astrophys, 2003, 401: 773-779
[18]
31 Peng Q Y, Vienne A, Lainey V, et al. New evidence of precision premium for Galilean satellites from CCD imaging. Planet Space Sci, 2008, 56: 1807-1811
[19]
33 Stetson P B. Photographic stellar photometry with the PDS microdensitometer. Astron J, 1979, 84: 1056-1066
[20]
34 Hog E, Fabricius C, Makarov V V, et al. The Tycho-2 catalogue of the 2.5 million brightest stars. Astron Astrophys, 2000, 355: L27-L30
[21]
36 Jekeli C. Geometric reference systems in geodesy. Lecture notes of Division of Geodesy and Geospatial Science, School of Earth Science, Ohio State University. 2006
[22]
37 Green R M. Spherical Astronomy. Cambridge: Cambridge University Press, 1985
[23]
38 Hirt C, Kahlmann T. Hochpr？zise neigungsmessung mit dem elektronischen pendelneigungssensor HRTM. Zeitschrift für Vermessungswesen, 2004, 129: 266-276
[24]
29 Hirt C. Entwicklung und Erprobung eines digitalen Zenitkamerasystems für die hochpr？zise Lotabweichungsbestimmung. Doctor Dissertation. Wissen. Arb. der Fachrichtung Geod？sie und Geoinformatik an der Universit？t Hannover Nr. 253, 2004
[25]
1 Chen M, Liu Q H, Wu Y J, et al. Relative position determination of a lunar rover using the biased differential phase delay of same-beam VLBI. Sci China Phys Mech Astron, 2011, 54: 2284-2295
[26]
2 Huang Y, Hu X G, Zhang X Z, et al. Improvement of orbit determination for geostationary satellites with VLBI tracking. Chin Sci Bull, 2011, 56: 2765-2772
[27]
3 Xu M H, Wang G L, Zhao M. Direct estimation of the Solar acceleration using geodetic/astrometric VLBI observations. Sci China Phys Mech Astron, 2012, 55: 329-332
[28]
5 Huang Y, Hu X G, Li P J, et al. Precise positioning of the Chang'E-3 lunar lander using a kinematic statistical method. Chin Sci Bull, 2012, 57: 4545-4551
16 Bürki B, Müller A, Kahle H G. DIADEM: The new digital astronomical deflection measuring system for high-precision measurements of deflections of the vertical at ETH Zurich. In: Proceeding of IAG GGSM 2004, Porto, Portugal, 2004
[33]
23 Bürki B, Somieski A E, Sorber P, et al. The Digital Astronomical Deflection Measuring System (DIADEM). Swiss National Report on the Geodetic Activities in the Years 2003-2007, Swiss Geodetic Commission. 2007
[34]
24 Hirt C, Bürki B, Somieski A E, et al. Modern determination of vertical deflections using digital zenith cameras. J Survey Eng, 2010, 136: 1-12
29 Auer L H, Van Altena W F. Digital image centering. Ⅱ. Astron J, 1978, 83: 531-537
[38]
32 Chiu L T G. Astrometric techniques with a PDS microdensitometer. Astron J, 1977, 82: 842-848
[39]
35 Kaplan G H, Hughes J A, Seidelmann P K, et al. Mean and apparent place computations in the new IAU system. Ⅲ -Apparent, topocentric, and astrometric places of planets and stars. Astron J, 1989, 97: 1197-1210
