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Please use this identifier to cite or link to this item: http://hdl.handle.net/2289/6736
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dc.contributor.authorPatra, Nipanjana-
dc.contributor.authorBray, Justin D.-
dc.contributor.authorRoberts, Paul-
dc.contributor.authorEkers, R.D.-
dc.date.accessioned2017-09-21T10:35:45Z-
dc.date.available2017-09-21T10:35:45Z-
dc.date.issued2017-04-
dc.identifier.citationExperimental Astronomy, 2017, Vol. 43, p119-129en_US
dc.identifier.issn1572-9508-
dc.identifier.issn0922-6435 (Online)-
dc.identifier.urihttp://hdl.handle.net/2289/6736-
dc.descriptionRestricted Access. An open-access version is available at arXiv.org (one of the alternative locations)en_US
dc.description.abstractWe present a relatively simple time domain method for determining the bandpass response of a system by injecting a nanosecond pulse and capturing the system voltage output. A pulse of sub-nanosecond duration contains all frequency components with nearly constant amplitude up to 1 GHz. Hence, this method can accurately determine the system bandpass response to a broadband signal. In a novel variation on this impulse response method, a train of pulses is coherently accumulated providing precision calibration with a simple system. The basic concept is demonstrated using a pulse generator-accumulator setup realised in a Bedlam board which is a high speed digital signal processing unit. The same system was used at the Parkes radio telescope between 2–13 October 2013 and we demonstrate its powerful diagnostic capability. We also present some initial test data from this experiment.en_US
dc.language.isoenen_US
dc.publisherSpringeren_US
dc.relation.urihttp://adsabs.harvard.edu/abs/2017ExA....43..119Pen_US
dc.relation.urihttp://arxiv.org/abs/1502.05862en_US
dc.relation.urihttp://dx.doi.org/10.1007/s10686-017-9523-8en_US
dc.rights2017 Springeren_US
dc.subjectAstronomical instrumentationen_US
dc.subjectPulse calibrationen_US
dc.subjectNanosecond pulse generatoren_US
dc.titleBandpass calibration of a wideband spectrometer using coherent pulse injection.en_US
dc.typeArticleen_US
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