• Українська
  • English
  • Русский
ISSN 2415-3400 (Online)
ISSN 1028-821X (Print)


Linkova, A, Khlopov, G

O. Ya. Usikov Institute for Radiophysics and Electronics of the National Academy of Sciences of Ukraine

O. Ya. Usikov Institute for Radiophysics and Electronics of the National Academy of Sciences of Ukraine
12, Proskura st., Kharkov, 61085, Ukraine
E-mail: annlinkova@mail.ru

Language: Russian

The study of integral and microstructure characteristics of liquid precipitation is of great practical interest for solution of many problems of national economy. Particularly, monitoring rain intensity is important for design of collecting systems and engineering structures, as well as it essentially influences productivity of agriculture. Radar methods for study of liquid precipitation permit to measure rain parameters over the large areas in real time. That is why they are more preferable in comparison with contact methods based on raingauges and disdrometers. A three-frequency method for radar remote sensing of liquid precipitation is proposed and studied in this paper, which allows restoring spatial profile of rain parameters. The results of numerical simulation of three-frequency radar remote sensing of liquid precipitation are presented; they were obtained for different sets of operating wavelengths of radar for the range of rain intensity 0…30 mm/h. It is shown that the usage of millimeter wavelengths is not reasonable due to strong attenuation of signal power at large distances and for large rain intensities. However, application of longer wavelengths permits to reduce influence of attenuation and to decrease measurement errors of rain parameters. The maximal measurement error of rain intensity is not more than 7 %.

Keywords: Gamma-distribution, radar cross-section, radar reflected power, rain intensity

Manuscript submitted 20.05.2016
PACS     95.75.-z; 95.75.Rs
Radiofiz. elektron. 2016, 21(3): 33-39
Full text (PDF)

  1. Mardiana R., Iguchi, T. and Takahashi, N., 2004. A dual-frequency rain profiling method without the use of a surface reference technique. IEEE Trans. Geosci. Remote Sens., 42(10), pp. 2214–2225. DOI: https://doi.org/10.1109/TGRS.2004.834647
  2. Mott, H., 2007. Remote Sensing with Polarimetric Radar. Hoboken: John Wiley & Sons.
  3. Olson, W. S. and Giglio, L., 1996. A Method for Combined Passive Active Microwave Retrievals of Cloud and Precipitation Profiles. J. Appl. Met., 35(10), pp. 1763–1789. DOI: https://doi.org/10.1175/1520-0450(1996)035<1763:AMFCPM>2.0.CO;2
  4. Linkova, A. М. and Khlopov, G. I., 2014. Retrieval of rain intensity by multi frequency active-passive remote sensing. Radiofizika i elektronika, 5(19)(3), pp. 26–32.
  5. Linkova, A. M. and Khlopov, G. I., 2015. Retrieval of microstructure characteristics of liquid precipitation by means of active-passive remote sensing. Proc. Voeikov Main Geophysical Observatory, 576, pp. 62–80 (in Russian).
  6. Ayvazian, G. M., 1991. Propagation of millimeter and sub millimeter waves in the clouds. Leningrad: Gidrometeoizdat Publ. (in Russian).
  7. Doviak, R. J. and Zrnic, D. S. 1984. Doppler radar and weather observations. Translated from English and ed. by A. A. Chernikov. Leningrad: Gidrometeoizdat Publ. (in Russian).
  8. Rozenberg, V. I., 1972. Scattering and attenuation of electromagnetic radiation by atmosphere particles. Leningrad: Gidrometeoizdat Publ. (in Russian).
  9. Arsenin, V. Y., 1966. Mathematical physics: main equations and special functions. Moscow: Nauka Publ. (in Russian).
  10. Atlas, D., 1967. Radar in Meteorology. Translated from English by G. L. Shubova. Leningrad: Gidrometeoizdat Publ. (in Russian).
  11. Gunn, R. and Kinzer, G. D., 1949. The terminal velocity of fall for water droplets in stagnant air. J. Appl. Met., 6(4), pp. 243–248. DOI: https://doi.org/10.1175/1520-0469(1949)006<0243:TTVOFF>2.0.CO;2
  12. Litvinov, I. V., 1974. Structure of precipitation. Leningrad: Gidrometeoizdat Publ. (in Russian).
  13. Goldrish, J., 1975. Improved error analysis in estimation of raindrop spectra, rain rate, liquid water content using multiple wavelength radar. IEEE Trans. Antennas Propag., 23(5), pp. 718–720. DOI: https://doi.org/10.1109/TAP.1975.1141159