Statistical considerations of modified two bit sampling for astronomical correlators
dc.contributor.advisor | Marcellin, Michael | en_US |
dc.contributor.author | Dowd, Andrew Vernon, 1962- | |
dc.creator | Dowd, Andrew Vernon, 1962- | en_US |
dc.date.accessioned | 2013-04-03T13:03:19Z | |
dc.date.available | 2013-04-03T13:03:19Z | |
dc.date.issued | 1991 | en_US |
dc.identifier.uri | http://hdl.handle.net/10150/277840 | |
dc.description.abstract | When applied to radio astronomy instrumentation, practical limitations on circuitry restrict digital correlators to extremely coarse quantization. This paper examines non-linear effects of modified two-bit quantization on astronomical correlators. Equations are presented to correct quantization bias in estimates. The degradation due to quantization is given and plotted. The necessary tolerance in threshold levels is established to avoid systematic errors in power spectrum measurement. An alternative method of measuring power is derived that reduces parameter sensitivity. | |
dc.language.iso | en_US | en_US |
dc.publisher | The University of Arizona. | en_US |
dc.rights | Copyright © is held by the author. Digital access to this material is made possible by the University Libraries, University of Arizona. Further transmission, reproduction or presentation (such as public display or performance) of protected items is prohibited except with permission of the author. | en_US |
dc.subject | Engineering, Electronics and Electrical. | en_US |
dc.subject | Physics, Astronomy and Astrophysics. | en_US |
dc.title | Statistical considerations of modified two bit sampling for astronomical correlators | en_US |
dc.type | text | en_US |
dc.type | Thesis-Reproduction (electronic) | en_US |
thesis.degree.grantor | University of Arizona | en_US |
thesis.degree.level | masters | en_US |
dc.identifier.proquest | 1343593 | en_US |
thesis.degree.discipline | Graduate College | en_US |
thesis.degree.discipline | Electrical and Computer Engineering | en_US |
thesis.degree.name | M.S. | en_US |
dc.identifier.bibrecord | .b2679424x | en_US |
refterms.dateFOA | 2018-06-15T21:48:02Z | |
html.description.abstract | When applied to radio astronomy instrumentation, practical limitations on circuitry restrict digital correlators to extremely coarse quantization. This paper examines non-linear effects of modified two-bit quantization on astronomical correlators. Equations are presented to correct quantization bias in estimates. The degradation due to quantization is given and plotted. The necessary tolerance in threshold levels is established to avoid systematic errors in power spectrum measurement. An alternative method of measuring power is derived that reduces parameter sensitivity. |