부산대학교 도서관

Astronomical sources are characterised using second-order power statistics because they have Gaussian distributions. Spectral Kurtosis is a tool that can suppress Gaussian noise and can therefore be used as an interference mitigation technique. However, care should be taken as transient sources such as pulsars may contain non-Gaussian components. This paper provides an overview of the Spectral Kurtosis estimator and how one obtains the thresholds in order to apply the estimator as an interference mitigation technique. The technique is applied to Vela pulsar data observed in tied-array beamformer mode by the MeerKAT radio telescope. Flagged data portions are replaced with uncontaminated portions of the observation. The results are compared to the corresponding unmitigated data set.