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ISSN 2415-3400 (Online)
ISSN 1028-821X (Print)

THREE-FREQUENCY REMOTE SENSING OF LIQUID PRECIPITATION

heading: 
RADIOWAVE PROPAGATION, RADIOLOCATION AND REMOTE SENSING
Linkova, A, Khlopov, G
Organization: 

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
https://doi.org/10.15407/rej2016.03.033
Language: Russian
Abstract: 

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
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