Increase in Interference Levels in the 45 – 870 MHz Band at the Spanish e-CALLISTO Sites over the Years 2012 and 2019
Additional information
Authors
Prieto M.,
Gordo J. B. .,
Rodríguez-Pacheco J.,
Martínez A.,
Sánchez S.,
Russu A.,
Monstein C.,
Fernández R.
Type
Journal Article
Year
2020
Language
English
Abstract
Two sets of radio-frequency interference (RFI) measurements in the 45 – 870 MHz band are compared. The first set was taken in 2012 at various sites in the province of Guadalajara (Spain) as part of a worldwide site-testing campaign for the deployment of an international network of solar radio-spectrometers, the Compound Astronomical Low-cost Low-frequency Instrument for Spectroscopy and Transportable Observatory (e-CALLISTO) array. Peralejos de las Truchas was found to be an ideal location, even for high-sensitivity non-solar observations, with the lowest interference levels ever measured in the framework of e-CALLISTO. The same set of measurements have been repeated seven years later using the same experimental setup at the same locations. The results presented in this article show that the RFI levels after seven years have notably increased, at some places by a factor of two, thereby placing at risk broadband spectroscopic radio-astronomy studies from the ground.
Journal
Solar Physics
Volume
295
Number
2
Start page number
11
ISSN
1573-093X
Keywords
irsol-refereed-scientific-papers
