Astronomy and Astrophysics – Astronomy
Scientific paper
Jan 2002
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002assl..278...33h&link_type=abstract
Solar System Remote Sensing, p. 33
Astronomy and Astrophysics
Astronomy
Radar Astronomy, Speckle Interferometry, Venus (Planet), Planetary Rotation, Radar Measurement
Scientific paper
The spin-vector of Venus was investigated by various Earth- and spacecraft-based techniques but until now no experimental data have been obtained on variations of both in magnitude and direction because of insufficient accuracy and too long measuring interval (much longer than the period of variations). In this work a new on principle ground-based radar interferometric technique named Radar Speckle Displacement Interferometry (RSDI) is proposed to measure precisely instantaneous vector components of and their variations with time. The technique is based on a so called far coherence (speckle displacement) effect for speckled radar fields scattered from randomly rough surfaces of moving objects and aims at precise measurement of their instantaneous rotational- progressive motion parameters.
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