Planetary radar astronomy
- 1 March 1968
- journal article
- Published by Institute of Electrical and Electronics Engineers (IEEE) in IEEE Spectrum
- Vol. 5 (3) , 70-79
- https://doi.org/10.1109/MSPEC.1968.5214821
Abstract
Measurements of the time delays and Doppler shifts of radar waves have been used to determine the orbits, radii, and rotation vectors of the inner planets and to improve by almost five orders of magnitude the accuracy of relating the Astronomical Unit to a terrestrial unit of length.Keywords
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