Astronomy and Astrophysics – Astronomy
Scientific paper
Jan 2002
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002mbns.conf...25h&link_type=abstract
The Moon Beyond 2002: Next Steps in Lunar Science and Exploration, p. 25
Astronomy and Astrophysics
Astronomy
Speckle Interferometry, Librational Motion, Lunar Rotation, Spin Dynamics, Mercury (Planet), Remote Sensing
Scientific paper
Radar Speckle Displacement Interferometry (RSDI) is a new on principle Earth-based radar technique which allows precise measurement of instantaneous rotational-progressive motion components of distant bodies. It is based on the effect of speckle displacement or far coherence of speckled radar fields scattered by rough surfaces of moving objects. RSDI examinations in practice of radar astronomy have been successfully initiated in 2001-2002 both in Europe and in the USA In particular, RSDI is considered as one of most promising ground-based techniques to solve the problem of Mercury's obliquity and librations. It was proposed in how Moon's physical librations can be measured. Below RSDI possibilities are discussed as applied to estimation of Moon's instantaneous spin axis orientation in the sky and its variation with time.
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