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Volume 52 Supplement 11

Special Issue: Application of GPS and other space geodetic techniques to Earth Sciences (2)

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

Earth, Planets and Space volume 52, pages 893–899 (2000)Cite this article

Abstract

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.

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Authors and Affiliations

  1. Communications Research Laboratory, Ministry of Posts and Telecommunications, 4-2-1 Nukui-Kita Machi, Koganei-shi, Tokyo, 184-0015, Japan

    K. Igarashi

  2. Institute of Radio Engineering and Electronics of Russian Academy of Sciencies (IRE RAS, Fryazino, Vvedenskogo sq. 1, 141120, Moscow Region, Russia

    A. Pavelyev, D. Pavelyev, I. A. Kucherjavenkov, S. Matyugov, A. Zakharov & O. Yakovlev

  3. GeoForschungsZentrum Potsdam (GFZ-Potsdam), Telegrafenberg, 14473, Potsdam, Germany

    K. Hocke

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  1. K. Igarashi
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  2. A. Pavelyev
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  3. K. Hocke
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  4. D. Pavelyev
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  5. I. A. Kucherjavenkov
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  6. S. Matyugov
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  7. A. Zakharov
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  8. O. Yakovlev
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Correspondence to K. Igarashi.

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Igarashi, K., Pavelyev, A., Hocke, K. et al. Radio holographic principle for observing natural processes in the atmosphere and retrieving meteorological parameters from radio occultation data. Earth Planet Sp 52, 893–899 (2000). https://doi.org/10.1186/BF03352302

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  • DOI: https://doi.org/10.1186/BF03352302

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