Noise statistics in a fast digital radio receiver: the Bedlam backend for the Parkes radio telescope
The digital record of the voltage in a radio telescope receiver, after frequency conversion and sampling at a finite rate, is not a perfect representation of the original analog signal. To detect and characterise a transient event with a duration comparable to the inverse bandwidth it is necessary t...
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Veröffentlicht in: | Experimental astronomy 2013-08, Vol.36 (1-2), p.155-174 |
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creator | Bray, Justin D. Ekers, Ron D. Roberts, Paul |
description | The digital record of the voltage in a radio telescope receiver, after frequency conversion and sampling at a finite rate, is not a perfect representation of the original analog signal. To detect and characterise a transient event with a duration comparable to the inverse bandwidth it is necessary to compensate for these effects, altering the statistical properties of the signal and making it difficult to determine the significance of a potential detection. We present an analysis of these modified statistics and demonstrate them with experimental results from Bedlam, a new digital backend for the Parkes radio telescope. |
doi_str_mv | 10.1007/s10686-012-9327-9 |
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title | Noise statistics in a fast digital radio receiver: the Bedlam backend for the Parkes radio telescope |
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