The terrestrial and lunar reference frame in lunar laser ranging |
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Authors: | C Huang W Jin H Xu |
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Institution: | (1) Shanghai Astronomical Observatory, Academia Sinica, 80 Nandan Road, Shanghai 200030, People's Republic of China, CN |
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Abstract: | The initial value problem and the stability of solution in the determination of the coordinates of three observing stations
and four retro-reflectors by lunar laser ranging are discussed. Practical iterative computations show that the station coordinates
can be converged to about 1 cm, but there will be a slight discrepancy of the longitudinal components computed by various
analysis centers or in different years. There are several factors, one of which is the shift of the right ascension of the
Moon, caused by the orientation deviation of the adopted lunar ephemeris, which can make the longitudinal components of all
observing stations rotate together along the longitudinal direction with same angle. Additionally, the frame of selenocentric
coordinates is stable, but a variation or adjustment of lunar third-degree gravitational coefficients will cause a simultaneous
shift along the reflectors' longitudes or rotation around the Y axis.
Received: 21 August 1996 / Accepted: 17 November 1998 |
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Keywords: | , Terrestrial reference frame,Lunar reference frame,Lunar laser ranging |
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