RFI Test Observations at a Candidate Ska Site in China

Details RFI Test Observations at a Candidate Ska Site in China RFI Test Observations at a Candidate Ska Site in China

Jun 2004

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004exa....17..423p&link_type=abstract

Experimental Astronomy, Volume 17, Issue 1-3, pp. 423-430

Astronomy and Astrophysics

Astronomy

1

Antenna, Measurement, Radio Frequency Interference, Radio Spectrum, Telescope Site

Scientific paper

Radio frequency interference (RFI) test observations were carried out at one of the candidate Square Kilometre Array (SKA) sites in Guizhou province, following the “RFI Measurement Protocol for Candidate SKA Sites” (hereafter RFI protocol). All data (raw and calibrated) are preserved in some suitable format, such as that set by the international RFI working group of the Site Evaluation and Selection Committee (SESC). An RFI test in December 2003 was performed according to Mode 1 of the RFI Protocol, in order to identify technical difficulties which might arise during a co-ordinated RFI measurement campaign over a period of 1 year. In this paper we describe the current equipment, observational technique and data presentation. The preliminary results demonstrate that the RFI situation at Dawodang depression in Guizhou province makes it quite a promising location for the proposed SKA. Furthermore, the first session of the RFI monitoring program, which was made in May 2004, showed that a complete RFI measurement including both modes 1 and 2 of the RFI Protocol would take about 2 weeks. The possible ways to minimize some limitations of the current equipment are also discussed, which will enable us to meet the RFI protocol.

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