Impactos de satélites GNSS no radiotelescópio BINGO.

Abstract

GNSS satellites are potent sources of RFI that impair radioastronomical observations. With a focus on BINGO and one of its branches, UIRAPURU, we plan to estimate the influence of primary GNSS constellations concerning satellite signals and instrument quality. We compare the signal with major cosmological foregrounds, demonstrating the impact and identifying cases in which signal recovery is still feasible. This work concentrates on analyzing RFI that disrupts the frequency range between 960 and 1260 MHz in the BINGO experiment’s HI detection. As part of efforts to mitigate GNSS transmission effects, one of the strategies involves mapping temporal fluctuations of these signals. Understanding the influence of satellite signals on HI measurement is aided by analysis, a crucial step in comprehending the satellite signal’s impact on HI measurement. The results and prospects encompass characterization, analysis, and RFI mitigation for BINGO, HI intensity mapping, and impacts on cosmological signals. In essence, this dissertation contributes to an in-depth understanding of RFIs in radio telescopes, particularly within the BINGO context, offering valuable insights for advancing radioastronomy research.