Earth, Planets and Space

, Volume 52, Issue 11, pp 893–899 | Cite as

Radio holographic principle for observing natural processes in the atmosphere and retrieving meteorological parameters from radio occultation data

  • K. Igarashi
  • A. Pavelyev
  • K. Hocke
  • D. Pavelyev
  • I. A. Kucherjavenkov
  • S. Matyugov
  • A. Zakharov
  • O. Yakovlev
Open Access


The radio holographic principle is briefly described and tested by using radio occultation data of the GPS/MET and MIR/GEO experiments. Sub-Fresnel spatial resolution ∼12 m/pixel was achieved using focused synthetic aperture radio holographic approach, and direct evidence of multibeam propagation effects in the atmosphere was obtained. The achieved instrumental accuracy in angular distance measurements was near 0.004 milliradian/pixel, and observed angular distance between different rays was equal to 0.3 milliradians. The angular resolution of the radio holographic method depends on the wavelength as λ1 compared to λ1/2 in conventional methods. In general case the principal limit of the vertical resolution may be determined using focused synthetic aperture antenna theory and may achieve a value ∼20–40 m under assumptions of spherical symmetry and quiet atmospheric conditions. Wave structures were discovered in the altitude distribution of the gradient electron density at a height interval of 60–95 km with spatial period 1–2 km and vertical resolution 300–500 m. Good correspondence was found between the temperature profiles revealed by radio holographic analysis and those obtained by traditional retrieval using UCAR GPS/MET data.


Global Position System Vertical Resolution Radio Occultation Main Beam Angular Spectrum 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.


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Copyright information

© The Society of Geomagnetism and Earth, Planetary and Space Sciences (SGEPSS); The Seismological Society of Japan; The Volcanological Society of Japan; The Geodetic Society of Japan; The Japanese Society for Planetary Sciences. 2000

Authors and Affiliations

  • K. Igarashi
    • 1
  • A. Pavelyev
    • 2
  • K. Hocke
    • 3
  • D. Pavelyev
    • 2
  • I. A. Kucherjavenkov
    • 2
  • S. Matyugov
    • 2
  • A. Zakharov
    • 2
  • O. Yakovlev
    • 2
  1. 1.Communications Research LaboratoryMinistry of Posts and TelecommunicationsTokyoJapan
  2. 2.Institute of Radio Engineering and Electronics of Russian Academy of Sciencies (IRE RASMoscow RegionRussia
  3. 3.GeoForschungsZentrum Potsdam (GFZ-Potsdam)PotsdamGermany

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