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Author:Enqvist, Anton
Title:Radiotaajuiset häiriöt ja niiden tunnistaminen SMOS-ympäristösatelliitin mittauksista Suomen alueella
Radio Frequency Interference and its Detection from Measurements of SMOS Satellite in Finland
Publication type:Master's thesis
Publication year:2012
Pages:[8] + 52      Language:   fin
Department/School:Signaalinkäsittelyn ja akustiikan laitos
Main subject:Signaalinkäsittelytekniikka   (S-88)
Supervisor:Wichman, Risto
Instructor:Kainulainen, Juha
Electronic version URL: http://urn.fi/URN:NBN:fi:aalto-201209213149
OEVS:
Electronic archive copy is available via Aalto Thesis Database.
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Location:P1 Ark Aalto  688   | Archive
Keywords:remote sensing
satellite
radiometry
interferometric radiometer
radio frequency interference
kaukokartoitus
satelliitti
radiometria
interferometrinen radiometri
radiotaajuiset häiriöt
Abstract (eng): Soil Moisture and Ocean Salinity (SMOS) satellite mission is a project of European Space Agency for observing Earth conditions by L-band radiometers.
The satellite uses 72 radiometric receivers for synthetizing spatial brightness temperature charts for scientific use.
However, frequently the charts are contaminated by Radio Frequency Interference (RFI) caused by various disturbing radio transmitters, thus making the images unusable.
This master's thesis studies the effect of RFI, investigates its presence, and tests several methods of reducing its effect.
The research is based on SMOS satellite data observed from the area of Finland.
Abstract (fin): SMOS-satelliitti (Soil Moisture and Ocean Salinity) on Euroopan avaruusjärjestö ESA:n hanke, jonka tarkoituksena on mitata maanpäällisiä olosuhteita L-kaistan radiometreillä.
Satelliitti käyttää 72 radiometrivastaanotinta tuottaakseen kaksiulotteisia kirkkauslämpötilakarttoja.
Usein kuvat ovat kuitenkin monenlaisten radiolähetinlaitteiden aiheuttamien radiotaajuisten häiriöiden (RFI) turmelemia, mikä tekee niistä käyttökelvottomia.
Tämä diplomityö selvittää RFI:n vaikutuksia ja läsnäoloa, sekä tutkii useita menetelmiä häiriöiden poistamiseksi.
Tutkimus on keskittynyt SMOS-satelliitin aineistoihin mittauksista Suomen alueella.
ED:2012-06-19
INSSI record number: 44681
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