Title :
Planetary radar astronomy
Author :
Shapiro, Irwin I.
Author_Institution :
Lincoln Laboratory, M.I.T.
fDate :
3/1/1968 12:00:00 AM
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 :
Astronomy; Delay effects; Doppler radar; Doppler shift; Extraterrestrial measurements; Length measurement; Orbits; Radar measurements; Rotation measurement; Time measurement;
Journal_Title :
Spectrum, IEEE
DOI :
10.1109/MSPEC.1968.5214821
