On Theoretical Accuracy of Meteorological Targets Measurement by Radar

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68378289%3A_____%2F22%3A00558427" target="_blank" >RIV/68378289:_____/22:00558427 - isvavai.cz</a>

Alternative codes found

RIV/00216275:25530/22:39919949

Result on the web

<a href="https://www.radioeng.cz/fulltexts/2022/22_02_0176_0184.pdf" target="_blank" >https://www.radioeng.cz/fulltexts/2022/22_02_0176_0184.pdf</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.13164/re.2022.0176" target="_blank" >10.13164/re.2022.0176</a>

Result language

angličtina

Original language name

On Theoretical Accuracy of Meteorological Targets Measurement by Radar

Original language description

We draw your attention to the fact that meteorological radar does not actually measure a commonly used quantity “radar reflectivity factor,” (which is not dependent on frequency) but a different quantity called “radar reflectivity.” We present the usual recalculation which isnbased on frequency dependency used by Rayleigh approximation of radar cross-sections (back scattering cross section of rain, cloud, fog drop). But this approximation is valid in Rayleigh region only. We concluded that for admitting error lower than 2 dB in the radar reflectivity factor determination we can use the “effective radar reflectivity factor” for frequencies up to 19 GHz only. Otherwise the error will increase. As we use (and present in this article) the Mie algorithm we can replace the Rayleigh frequency dependence estimation by more accurate radarnreflectivity factor determination using the Mie scattering. The correction is presented in the form of “Correction function C” dependent on frequency and rain rate in the graphical form and polynomial approximation. Beside this we present the simplification of back scattering cross sections for Rayleigh and Optical regions and the border values of size parameter for these regions. We added the meteorological radar equation derivation. This should support the radar measurement understanding.n

Czech name

—

Czech description

—

Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

—

OECD FORD branch

10509 - Meteorology and atmospheric sciences

Project

<a href="/en/project/EF17_049%2F0008394" target="_blank" >EF17_049/0008394: Cooperation in Applied Research between the University of Pardubice and companies, in the Field of Positioning, Detection and Simulation Technology for Transport Systems (PosiTrans)</a><br>

Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2022

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

Radioengineering

ISSN

1210-2512

e-ISSN

—

Volume of the periodical

31

Issue of the periodical within the volume

2

Country of publishing house

CZ - CZECH REPUBLIC

Number of pages

9

Pages from-to

176-184

UT code for WoS article

000806410800002

EID of the result in the Scopus database

2-s2.0-85130440969