Astronomy and Astrophysics – Astronomy
Scientific paper
Aug 1979
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1979icar...39..192l&link_type=abstract
Icarus, vol. 39, Aug. 1979, p. 192-208.
Astronomy and Astrophysics
Astronomy
10
Mariner 10 Space Probe, Radio Occultation, Spaceborne Astronomy, Venus Atmosphere, Atmospheric Attenuation, Atmospheric Pressure, Error Analysis, Temperature Profiles
Scientific paper
Statistical error in Mariner 10 occultation profiles is traced from initial observations to reduced temperature, pressure, and absorption profiles. It is shown that for the Mariner 10 profile with a height of resolution of 0.1 km, statistical measurement errors lead to uncertainties in temperature that are less than 2 K at all altitudes considered and are typically less than 0.5 K. Attention is also given to uncertainties in pressure and atmospheric absorption. In addition it is found that there is also a systematic error in the reduction of two-way data that arises from the parallax between the uplink and downlink ray paths. Finally, it is concluded that if the systematic error can be reduced to the level of the statistical noise in Mariner 10, then long term studies of thick atmospheres by occultation techniques will be feasible in the future at good levels of accuracy.
Lipa B.
Tyler Leonard G.
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