Rainfall retrieval with new generation of microwave link backhaul operating at E-band

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21110%2F19%3A00341032" target="_blank" >RIV/68407700:21110/19:00341032 - isvavai.cz</a>

Výsledek na webu

<a href="https://indico.scc.kit.edu/event/570/contributions/5712/contribution.pdf" target="_blank" >https://indico.scc.kit.edu/event/570/contributions/5712/contribution.pdf</a>

DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

Rainfall retrieval with new generation of microwave link backhaul operating at E-band

Popis výsledku v původním jazyce

New generation of E-band commercial microwave links (CMLs) operating at frequency band 70 - 86 GHz is gradually completing cellular backhaul networks and especially in cities often replacing older devices. CML rainfall retrieval methods developed during last decade have been designed and tested for frequency bands 20-40 GHz, where path attenuation caused by raindrops is almost linearly related to rainfall intensity and does not strongly depend on drop size distribution. This contribution assesses potential of E-band CMLs for rainfall retrieval by combining theoretical calculations and observations retrieved from E-band CMLs operating within cellular backhaul of T-Mobile, CZ. The initial results show that i) number of E-band CMLs has increased dramatically during last three years, ii) CML rainfall retrieval at E-band is sensitive to drop size distribution and spatial variability of rainfall, and iii) E-band CMLs are about three times more sensitive to rainfall than older 20-40 GHz devices, which enables to reliably measure rainfalls even with short (sub-kilometre long) CMLs. Longer CMLs, on the other hand, experience outages during heavier rainfalls, nevertheless, they can measure reliably light rainfalls, which has not been mostly feasible with old generation of devices.

Název v anglickém jazyce

Rainfall retrieval with new generation of microwave link backhaul operating at E-band

Popis výsledku anglicky

New generation of E-band commercial microwave links (CMLs) operating at frequency band 70 - 86 GHz is gradually completing cellular backhaul networks and especially in cities often replacing older devices. CML rainfall retrieval methods developed during last decade have been designed and tested for frequency bands 20-40 GHz, where path attenuation caused by raindrops is almost linearly related to rainfall intensity and does not strongly depend on drop size distribution. This contribution assesses potential of E-band CMLs for rainfall retrieval by combining theoretical calculations and observations retrieved from E-band CMLs operating within cellular backhaul of T-Mobile, CZ. The initial results show that i) number of E-band CMLs has increased dramatically during last three years, ii) CML rainfall retrieval at E-band is sensitive to drop size distribution and spatial variability of rainfall, and iii) E-band CMLs are about three times more sensitive to rainfall than older 20-40 GHz devices, which enables to reliably measure rainfalls even with short (sub-kilometre long) CMLs. Longer CMLs, on the other hand, experience outages during heavier rainfalls, nevertheless, they can measure reliably light rainfalls, which has not been mostly feasible with old generation of devices.

Druh

O - Ostatní výsledky

CEP obor

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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