Quantifying Wet Antenna Attenuation in 38-GHz Commercial Microwave Links of Cellular Backhaul

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21110%2F19%3A00330172" target="_blank" >RIV/68407700:21110/19:00330172 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/68407700:21230/19:00330172

Výsledek na webu

<a href="https://doi.org/10.1109/LGRS.2018.2876696" target="_blank" >https://doi.org/10.1109/LGRS.2018.2876696</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1109/LGRS.2018.2876696" target="_blank" >10.1109/LGRS.2018.2876696</a>

Jazyk výsledku

čeština

Název v původním jazyce

Quantifying Wet Antenna Attenuation in 38-GHz Commercial Microwave Links of Cellular Backhaul

Popis výsledku v původním jazyce

The quantification of wet antenna attenuation (WAA) represents one of the major uncertainties in rainfall retrieval from commercial microwave links (CMLs). We propose identifying WAA distribution and upper limits based on rainfall climatology without the need for nearby rainfall observations. The quantified contributions of antenna wetting due to total loss are derived from 2 years of data collected from eight short (48-497 m) CMLs operating at frequencies of 37.3-39.2 GHz within the cellular backhaul. More specifically, the complementary cumulative distribution functions of measured attenuation are compared with theoretical ones calculated from rainfall data from local rain gauges. The results show that WAA reaches 1.5-2.0 dB and dominates over path attenuation during light rainfalls (R < 2 mm/h). WAA can, however, reach 2.8-5.3 dB during heavy rainfalls and maximal WAA observed during extreme rainfalls (R ~ 70-130 mm/h) is between 6-9 dB. The constant value of WAA used in some previous studies may, therefore, lead to a significant overestimation of peak rainfalls retrieved from CMLs

Název v anglickém jazyce

Quantifying Wet Antenna Attenuation in 38-GHz Commercial Microwave Links of Cellular Backhaul

Popis výsledku anglicky

The quantification of wet antenna attenuation (WAA) represents one of the major uncertainties in rainfall retrieval from commercial microwave links (CMLs). We propose identifying WAA distribution and upper limits based on rainfall climatology without the need for nearby rainfall observations. The quantified contributions of antenna wetting due to total loss are derived from 2 years of data collected from eight short (48-497 m) CMLs operating at frequencies of 37.3-39.2 GHz within the cellular backhaul. More specifically, the complementary cumulative distribution functions of measured attenuation are compared with theoretical ones calculated from rainfall data from local rain gauges. The results show that WAA reaches 1.5-2.0 dB and dominates over path attenuation during light rainfalls (R < 2 mm/h). WAA can, however, reach 2.8-5.3 dB during heavy rainfalls and maximal WAA observed during extreme rainfalls (R ~ 70-130 mm/h) is between 6-9 dB. The constant value of WAA used in some previous studies may, therefore, lead to a significant overestimation of peak rainfalls retrieved from CMLs

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10501 - Hydrology

Projekt

<a href="/cs/project/GA17-16389S" target="_blank" >GA17-16389S: Odvození hydrologických veličin z šíření radiových vln v síti pevných mikrovlnných spojů</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2019

Kód důvěrnosti údajů

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

Název periodika

IEEE Geoscience and Remote Sensing Letters

ISSN

1545-598X

e-ISSN

1558-0571

Svazek periodika

16

Číslo periodika v rámci svazku

4

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

5

Strana od-do

514-518

Kód UT WoS článku

000462443300004

EID výsledku v databázi Scopus

2-s2.0-85056313101