Hardware Implementation of an SK Spectrometer

Dale Gary, Zhiwei Liu, Gelu Nita

Research output: Contribution to journalConference articlepeer-review

Abstract

A wideband spectrometer of 500 MHz instantaneous bandwidth is described that includes an im- plementation of the Spectral Kurtosis (SK) algorithm for automatic radio frequency interference (RFI) detection. An SK spectrometer accumulates both power and power-squared, which are then used to develop the SK estimator. The SK spectrometer of the Korean Solar Radio Burst Locator (KSRBL) has a 2 GHz instantaneous bandwidth that is time multiplexed over the 0.24-18 GHz radio frequency range, for the study of solar bursts. We use a novel presentation of the data from the spectrometers to classify types of RFI. It is found that the algorithm is especially useful for excising highly intermittent RFI but is less successful for RFI due to digital signals. The method of multiscale SK is presented that addresses the known blindness of Kurtosis-based estimators to 50% duty-cycle RFI.

Original languageEnglish (US)
JournalProceedings of Science
Volume107
StatePublished - 2010
Event2010 RFI Mitigation Workshop, RFI 2010 - Groningen, Netherlands
Duration: Mar 29 2010Mar 31 2010

All Science Journal Classification (ASJC) codes

  • General

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