Experiences with Special Ka- and Q-band Receivers for Alphasat Signal Monitoring in Prague, CZ

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216275%3A25530%2F17%3A39911449" target="_blank" >RIV/00216275:25530/17:39911449 - isvavai.cz</a>

Výsledek na webu

<a href="http://dx.doi.org/10.1109/COMITE.2017.7932355" target="_blank" >http://dx.doi.org/10.1109/COMITE.2017.7932355</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1109/COMITE.2017.7932355" target="_blank" >10.1109/COMITE.2017.7932355</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Experiences with Special Ka- and Q-band Receivers for Alphasat Signal Monitoring in Prague, CZ

Popis výsledku v původním jazyce

This paper describes special Ka- and Q-band receiver for the Alphasat signal developed for the Institute of Atmospheric Physics (IAP) Prague and first operational experiences with it. The signal level monitoring enables us to derive the atmospheric attenuation which is object of our research (its statistics and relation to relevant meteorological parameters like rain, liquid water content (LWC) and water vapor density. The LNB is located in the focus of 1.8 m parabolic offset antenna and signal is twice converted down. The resolution is 0.5 dB and sampling rate 20 Hz. Signal record is burdened by satellite space motion. Therefore a new detector was added later to enable the autonomous antenna tracking in elevation and the daily peak to peak variation due to satellite motion was significantly reduced. Recently merged splitter on second IF 1.7 GHz provides signal for 39 GHz radiometer. Examples of recorded signal with and without atmospheric attenuation are added. The satellite frequency changes are discussed, too.

Název v anglickém jazyce

Experiences with Special Ka- and Q-band Receivers for Alphasat Signal Monitoring in Prague, CZ

Popis výsledku anglicky

This paper describes special Ka- and Q-band receiver for the Alphasat signal developed for the Institute of Atmospheric Physics (IAP) Prague and first operational experiences with it. The signal level monitoring enables us to derive the atmospheric attenuation which is object of our research (its statistics and relation to relevant meteorological parameters like rain, liquid water content (LWC) and water vapor density. The LNB is located in the focus of 1.8 m parabolic offset antenna and signal is twice converted down. The resolution is 0.5 dB and sampling rate 20 Hz. Signal record is burdened by satellite space motion. Therefore a new detector was added later to enable the autonomous antenna tracking in elevation and the daily peak to peak variation due to satellite motion was significantly reduced. Recently merged splitter on second IF 1.7 GHz provides signal for 39 GHz radiometer. Examples of recorded signal with and without atmospheric attenuation are added. The satellite frequency changes are discussed, too.

Druh

D - Stať ve sborníku

CEP obor

—

OECD FORD obor

20201 - Electrical and electronic engineering

Projekt

—

Návaznosti

S - Specificky vyzkum na vysokych skolach

Rok uplatnění

2017

Kód důvěrnosti údajů

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

Název statě ve sborníku

Conference on Microwave Techniques COMITE 2017

ISBN

978-1-5090-4594-5

ISSN

—

e-ISSN

neuvedeno

Počet stran výsledku

5

Strana od-do

1-5

Název nakladatele

IEEE

Místo vydání

New York

Místo konání akce

Brno

Datum konání akce

20. 4. 2017

Typ akce podle státní příslušnosti

WRD - Celosvětová akce

Kód UT WoS článku

000403400000018