Rainfall retrieval from E-band commercial microwave links

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21110%2F19%3A00341029" target="_blank" >RIV/68407700:21110/19:00341029 - isvavai.cz</a>

Výsledek na webu

<a href="https://meetingorganizer.copernicus.org/EGU2019/EGU2019-14956.pdf" target="_blank" >https://meetingorganizer.copernicus.org/EGU2019/EGU2019-14956.pdf</a>

DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

Rainfall retrieval from E-band commercial microwave links

Popis výsledku v původním jazyce

Use of commercial microwave links (CMLs) as rainfall sensors was suggested about decade ago. Since then, several studies have confirmed that CMLs operated at frequencies between 20 – 40 GHz, which were up until now most commonly used by mobile network operators as cellular backhaul, can provide reliable rainfall intensity estimates. However, continuously increasing demand on data traffic force mobile network operators utilizing higher frequency spectra. New generation of CMLs operated at E-band (60 – 90 GHz) is, therefore, gradually completing current networks and often even replacing older (20 – 40 GHz) devices. However, up until now, there has not been any studies reported, which would investigate potential of these devices for rainfall retrieval. Compared to lower frequency devices, CMLs operated at E-band are more sensitive to rainfall, nevertheless the relationship between attenuation and rainfall is not anymore linear for these frequencies. Furthermore, attenuation along their path is noticeably influenced by water vapor. Finally, E-band CMLs has usually full-duplex configuration with two channels operating in one direction at 71 – 76 GHz and in the second direction at 81 – 86 GHz with duplex separation 10 GHz. Thus, rainfall intensity can be estimated using standard attenuation-rainfall model but also the model based on differential attenuation, which is, in theory, insensitive to wet antenna effect.

Název v anglickém jazyce

Rainfall retrieval from E-band commercial microwave links

Popis výsledku anglicky

Use of commercial microwave links (CMLs) as rainfall sensors was suggested about decade ago. Since then, several studies have confirmed that CMLs operated at frequencies between 20 – 40 GHz, which were up until now most commonly used by mobile network operators as cellular backhaul, can provide reliable rainfall intensity estimates. However, continuously increasing demand on data traffic force mobile network operators utilizing higher frequency spectra. New generation of CMLs operated at E-band (60 – 90 GHz) is, therefore, gradually completing current networks and often even replacing older (20 – 40 GHz) devices. However, up until now, there has not been any studies reported, which would investigate potential of these devices for rainfall retrieval. Compared to lower frequency devices, CMLs operated at E-band are more sensitive to rainfall, nevertheless the relationship between attenuation and rainfall is not anymore linear for these frequencies. Furthermore, attenuation along their path is noticeably influenced by water vapor. Finally, E-band CMLs has usually full-duplex configuration with two channels operating in one direction at 71 – 76 GHz and in the second direction at 81 – 86 GHz with duplex separation 10 GHz. Thus, rainfall intensity can be estimated using standard attenuation-rainfall model but also the model based on differential attenuation, which is, in theory, insensitive to wet antenna effect.

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