A. Faustmann, L. Schwardt, V. van Tonder, J. Gilmore, S. Buchner
{"title":"A Short-Time Stationarity Test of Radio Signals From the Vela Pulsar Using Polyspectra","authors":"A. Faustmann, L. Schwardt, V. van Tonder, J. Gilmore, S. Buchner","doi":"10.23919/AT-AP-RASC54737.2022.9814193","DOIUrl":null,"url":null,"abstract":"Polyphase filterbank data of the Vela pulsar is acquired using the MeerKAT radio telescope and analysed using the second-order frequency-frequency polyspectrum. The lack of components off of the non-stationary manifold indicates that the process is second-order stationary over timescales of 0.8 microseconds. Additionally, the complex process is found to be circular and thus requires only a small subset of the possible definitions of the higher-order moments in its characterisation.","PeriodicalId":356067,"journal":{"name":"2022 3rd URSI Atlantic and Asia Pacific Radio Science Meeting (AT-AP-RASC)","volume":"201 1","pages":"0"},"PeriodicalIF":0.0000,"publicationDate":"2022-05-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"2022 3rd URSI Atlantic and Asia Pacific Radio Science Meeting (AT-AP-RASC)","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.23919/AT-AP-RASC54737.2022.9814193","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 0
Abstract
Polyphase filterbank data of the Vela pulsar is acquired using the MeerKAT radio telescope and analysed using the second-order frequency-frequency polyspectrum. The lack of components off of the non-stationary manifold indicates that the process is second-order stationary over timescales of 0.8 microseconds. Additionally, the complex process is found to be circular and thus requires only a small subset of the possible definitions of the higher-order moments in its characterisation.