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Radio Occultation (ORO)

NSSDCA ID: 1978-051A-20

Mission Name: Pioneer Venus Orbiter
Principal Investigator:Dr. Arvydas J. Kliore


This experiment made use of the S-band and X-band radio signals for data measurements. The objectives were (1) to measure refractivity profiles, (2) to measure S- and X-band dispersion and absorption, (3) to measure electron density height profiles, and (4) to determine the dynamics of the lower atmosphere.

Alternate Names

  • ORO
  • PioneerVenusOrbiter/ORO
  • urn:nasa:pds:context:instrument:pvo.orse
  • urn:nasa:pds:context:instrument:rss.p12


  • Planetary Science: Atmospheres

Additional Information

Questions and comments about this experiment can be directed to: Dr. Dieter K. Bilitza



NameRoleOriginal AffiliationE-mail
Dr. Arvydas J. KlioreGeneral ContactNASA Jet Propulsion
Dr. Arvydas J. KliorePrincipal InvestigatorNASA Jet Propulsion

Selected References

  • Berman, A. L., and R. Ramos, Pioneer Venus occulation radio science data generation, IEEE Trans. Geosci. Rem. Sens., GE-18, No. 1, 11-14, doi:10.1109/TGRS.1980.350252, Jan. 1980.
  • Kliore, A. J., et al., The polar ionosphere of Venus near the terminator from early Pioneer Venus Orbiter radio occultations, Science, 203, No. 4382, 765-768, doi:10.1126/science.203.4382.765, Feb. 1979.
  • Kliore, A. J., et al., Initial observations of the nightside ionosphere of Venus from Pioneer Venus Orbiter radio occultations, Science, 205, No. 4401, 99-102, doi:10.1126/science.205.4401.99, July 1979.
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