Noise Characteristics of an Instrumental Particle Absorbance Technique.
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| Title: | Noise Characteristics of an Instrumental Particle Absorbance Technique. |
|---|---|
| Authors: | Springston, Stephen R.1 (AUTHOR), Sedlacek III, Arthur J.1 (AUTHOR) Sedlacek@bnl.gov |
| Source: | Aerosol Science & Technology. Dec2007, Vol. 41 Issue 12, p1110-1116. 7p. 1 Chart, 5 Graphs. |
| Subjects: | Noise control, Spectrometers, Particles, Absorption, Noise |
| Abstract: | Noise characteristics and noise reduction techniques for the particle soot absorption spectrometer (PSAP) are discussed. It is shown through elementary propagation of errors analysis and verified through simulations and by experiments that the PSAP signal noise varies as the -3/2 power of the integration time and not the assumed -1/2. It is also shown that neither simple boxcar averaging of independent absorptivity values nor the commonly used moving boxcar average allow realization of the maximum signal to noise ratio. Instead it is argued that maximal noise reduction is realized by post-processing of the raw reference and sample channel intensities. Finally the implications of these findings are demonstrated with representative field data. [ABSTRACT FROM AUTHOR] |
| Copyright of Aerosol Science & Technology is the property of Taylor & Francis Ltd and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) | |
| Database: | Engineering Source |
| FullText | Text: Availability: 0 |
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| Header | DbId: egs DbLabel: Engineering Source An: 52719711 AccessLevel: 6 PubType: Academic Journal PubTypeId: academicJournal PreciseRelevancyScore: 0 |
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| Items | – Name: Title Label: Title Group: Ti Data: Noise Characteristics of an Instrumental Particle Absorbance Technique. – Name: Author Label: Authors Group: Au Data: <searchLink fieldCode="AR" term="%22Springston%2C+Stephen+R%2E%22">Springston, Stephen R.</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Sedlacek+III%2C+Arthur+J%2E%22">Sedlacek III, Arthur J.</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> Sedlacek@bnl.gov</i> – Name: TitleSource Label: Source Group: Src Data: <searchLink fieldCode="JN" term="%22Aerosol+Science+%26+Technology%22">Aerosol Science & Technology</searchLink>. Dec2007, Vol. 41 Issue 12, p1110-1116. 7p. 1 Chart, 5 Graphs. – Name: Subject Label: Subjects Group: Su Data: <searchLink fieldCode="DE" term="%22Noise+control%22">Noise control</searchLink><br /><searchLink fieldCode="DE" term="%22Spectrometers%22">Spectrometers</searchLink><br /><searchLink fieldCode="DE" term="%22Particles%22">Particles</searchLink><br /><searchLink fieldCode="DE" term="%22Absorption%22">Absorption</searchLink><br /><searchLink fieldCode="DE" term="%22Noise%22">Noise</searchLink> – Name: Abstract Label: Abstract Group: Ab Data: Noise characteristics and noise reduction techniques for the particle soot absorption spectrometer (PSAP) are discussed. It is shown through elementary propagation of errors analysis and verified through simulations and by experiments that the PSAP signal noise varies as the -3/2 power of the integration time and not the assumed -1/2. It is also shown that neither simple boxcar averaging of independent absorptivity values nor the commonly used moving boxcar average allow realization of the maximum signal to noise ratio. Instead it is argued that maximal noise reduction is realized by post-processing of the raw reference and sample channel intensities. Finally the implications of these findings are demonstrated with representative field data. [ABSTRACT FROM AUTHOR] – Name: AbstractSuppliedCopyright Label: Group: Ab Data: <i>Copyright of Aerosol Science & Technology is the property of Taylor & Francis Ltd and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.) |
| PLink | https://search.ebscohost.com/login.aspx?direct=true&site=eds-live&db=egs&AN=52719711 |
| RecordInfo | BibRecord: BibEntity: Identifiers: – Type: doi Value: 10.1080/02786820701777457 Languages: – Code: eng Text: English PhysicalDescription: Pagination: PageCount: 7 StartPage: 1110 Subjects: – SubjectFull: Noise control Type: general – SubjectFull: Spectrometers Type: general – SubjectFull: Particles Type: general – SubjectFull: Absorption Type: general – SubjectFull: Noise Type: general Titles: – TitleFull: Noise Characteristics of an Instrumental Particle Absorbance Technique. Type: main BibRelationships: HasContributorRelationships: – PersonEntity: Name: NameFull: Springston, Stephen R. – PersonEntity: Name: NameFull: Sedlacek III, Arthur J. IsPartOfRelationships: – BibEntity: Dates: – D: 01 M: 12 Text: Dec2007 Type: published Y: 2007 Identifiers: – Type: issn-print Value: 02786826 Numbering: – Type: volume Value: 41 – Type: issue Value: 12 Titles: – TitleFull: Aerosol Science & Technology Type: main |
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