Noise statistics in a fast digital radio receiver: the Bedlam backend for the Parkes radio telescope

被引：10

作者：

Bray, Justin D. ^{[1
,2
]}

Ekers, Ron D. ^{[2
]}

Roberts, Paul ^{[2
]}

机构：

[1] Univ Adelaide, Sch Chem & Phys, Adelaide, SA, Australia

[2] CSIRO Astron & Space Sci, Epping, NSW, Australia

来源：

EXPERIMENTAL ASTRONOMY | 2013年 / 36卷 / 1-2期

基金：

澳大利亚研究理事会;

关键词：

Coherent pulse detection; Gaussian noise statistics; Digital radio receivers; ADC non-linearity; MATHEMATICAL-ANALYSIS; NEUTRINOS;

D O I：

10.1007/s10686-012-9327-9

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

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.

引用

页码：155 / 174

页数：20