DocumentCode
2172058
Title
Multi-band Radiometer for Measuring the Cosmic Microwave Background
Author
Bersanelli, M. ; Mandolesi, N. ; Marti-Canales, J.
Author_Institution
UniversitÃ\xa0 degli Studi di Milano, Dipartimento di Fisica, via Celoria 16, 20133 Milano, Italy - marco@mi.iasf.cnr.it
fYear
2002
fDate
23-26 Sept. 2002
Firstpage
1
Lastpage
4
Abstract
High precision measurements of the Cosmic Microwave Background (CMB) is the scientific core of the PLANCK mission of the European Space Agency. The Low Frequency Instrument (LFI), one the two instruments on board, is a multi-band radiometer array operating in the frequency range 27-110 GHz that will measure with unprecedented accuracy the CMB angular power spectrum and will be sensitive to the linear polarisation component. To achieve the required accuracy, the LFI receivers are cooled to 20 K and the measured sky radiation is compared to a reference load at 4 K. This paper presents the LFI system, the expected performance and calibration strategy based on the prototype activity currently on-going.
Keywords
Calibration; Current measurement; Frequency measurement; Instruments; Microwave measurements; Microwave radiometry; Polarization; Power measurement; Prototypes; Space missions;
fLanguage
English
Publisher
ieee
Conference_Titel
Microwave Conference, 2002. 32nd European
Conference_Location
Milan, Italy
Type
conf
DOI
10.1109/EUMA.2002.339344
Filename
4140424
Link To Document