Please use this identifier to cite or link to this item:
http://hdl.handle.net/2289/724
Full metadata record
DC Field | Value | Language |
---|---|---|
dc.contributor.author | Sachdev, S. | - |
dc.contributor.author | Udaya Shankar, N. | - |
dc.date.accessioned | 2005-12-15T08:33:09Z | - |
dc.date.available | 2005-12-15T08:33:09Z | - |
dc.date.issued | 2001 | - |
dc.identifier.citation | Journal of Astrophysics and Astronomy, 2001, Vol. 22, p213-227. | en |
dc.identifier.issn | 0250-6335 | - |
dc.identifier.uri | http://hdl.handle.net/2289/724 | - |
dc.description.abstract | A technique to detect man-made interference in the visibility data of the Mauritius Radio Telescope (MRT) has been developed. This technique is based on the understanding that the interference is generally ‘spiky’ in nature and has Fourier components beyond the maximum frequency which can arise from the radio sky and can therefore be identified. We take the sum of magnitudes of visibilities on all the baselines measure data given time to improved detectability. This is then high-pass filtered to get a time series from which the contribution of the sky is removed. Interference is detected in the high-pass data using an interative scheme. In each interation, interference with amplitudes beyond a certain threshold is detected. These points are then removed from the original time series and the resulting data are high-pass filtered and the process repeated. We have also studied the statistics of the strength, numbers, time of occurrence and duration of the interference at the MRT. The statistics indicate that most of ten the interference excision can be carried out while post-integrating the visibilities by giving a zero weight to the interference points. | en |
dc.format.extent | 401169 bytes | - |
dc.format.mimetype | application/pdf | - |
dc.language.iso | en | en |
dc.publisher | Indian Academy of Sciences, Bangalore, India. | en |
dc.rights | Indian Academy of Sciences, Bangalore, India. | en |
dc.subject | Metre-wave radio telescope; | en |
dc.subject | Fourier synthesis; | en |
dc.subject | Interference excision; | en |
dc.title | Detection, excision and statistics of interference at the Mauritius radio telescope | en |
dc.type | Article | en |
Appears in Collections: | Research Papers (A&A) |
Files in This Item:
File | Description | Size | Format | |
---|---|---|---|---|
2001.JA&A.22.P213.pdf | 15p. | 391.77 kB | Adobe PDF | View/Open |
Items in RRI Digital Repository are protected by copyright, with all rights reserved, unless otherwise indicated.