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Title:
Site evaluation and RFI spectrum measurements in Portugal at the frequency range 0.408 10 GHz for a GEM polarized galactic radio emission experiment
Authors:
Fonseca, Rui; Barbosa, Domingos; Cupido, Luis; Mourão, Ana; Dos Santos, Dinis M.; Smoot, George F.; Tello, Camilo
Affiliation:
AA(CENTRA, Instituto Superior Técnico, Av. Rovisco Pais, 1049-001 Lisbon, Portugal; Instituto de Telecomunicações, Campus Universitário de Santiago, 3810-193 Aveiro, Portugal), AB(CENTRA, Instituto Superior Técnico, Av. Rovisco Pais, 1049-001 Lisbon, Portugal; Centro de Física da Universidade do Porto, Rua do Campo Alegre 687, 4169-007 Porto, Portugal), AC(Centro de Fusão Nuclear, Instituto Superior Técnico, Av. Rovisco Pais, 1049-001 Lisboa, Portugal), AD(CENTRA, Instituto Superior Técnico, Av. Rovisco Pais, 1049-001 Lisbon, Portugal), AE(Departamento Electrónica e Telecomunicações, University of Aveiro, Campus Universitário de Santiago, 3810-193 Aveiro, Portugal; Instituto de Telecomunicações, Campus Universitário de Santiago, 3810-193 Aveiro, Portugal), AF(Astrophysics Group, MS 50-205, Lawrence Berkeley National Laboratory, 1 Cyclotron Rd., Berkeley, CA 94720, USA; Physics Department, University of California, 366 Le Conte Hall, Berkeley, CA 94720, USA), AG(Instituto Nacional de Pesquisas Espaciais, Divisão de Astrofísica, Caixa Postal 515, 12210-070, São José dos Campos SP, Brazil)
Publication:
New Astronomy, Volume 11, Issue 8, p. 551-556. (NewA Homepage)
Publication Date:
07/2006
Origin:
ELSEVIER
Keywords:
95.55.Jz, 95.85.Bh, 98.70.Vc, 42.25.Ja
DOI:
10.1016/j.newast.2006.02.002
Bibliographic Code:
2006NewA...11..551F

Abstract

We probed for radio frequency interference (RFI) at three potential galactic emission mapping experiment (GEM) sites in Portugal using custom made omnidirectional disconic antennas and directional pyramidal horn antennas. For the installation of a 10-m dish dedicated to the mapping of polarized galactic emission foreground planned for 2005 2007 in the 5 10 GHz band, the three sites chosen as suitable to host the antenna were surveyed for local radio pollution in the frequency range 0.01 10 GHz. Tests were done to look for radio broadcasting and mobile phone emission lines in the radio spectrum. The results show one of the sites to be almost entirely RFI clean and showing good conditions to host the experiment.
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