Velocity Biases of Adaptive Filter Estimates in Heterodyne Doppler Lidar Measurements.
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| Title: | Velocity Biases of Adaptive Filter Estimates in Heterodyne Doppler Lidar Measurements. |
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| Authors: | Dabas, Alain M., Drobinski, Philippe, Flamant, Pierre H. |
| Source: | Journal of Atmospheric & Oceanic Technology. Sep2000, Vol. 17 Issue 9, p1189. 14p. |
| Subjects: | Adaptive filters, Heterodyne reception, Frequency spectra |
| Abstract: | Frequency estimates by heterodyne Doppler lidar (HDL) may result in velocity bias due to the atmospheric speckle effect and an asymmetrical power spectrum of the probing pulse, as discussed in a previous paper by Dabas et al. In this paper, it has been shown that the velocity bias can be accounted for and corrected on a single measurement basis for a mean frequency estimator (e.g., pulse pair). In the present paper, a new procedure is proposed and validated for adaptive filters (e.g., Levin, notch, etc.), which accounts for nonstationary conditions such as wind turbulence, wind shear, and backscattered power gradient. The present study is conducted using both numerical simulations and actual data taken by a 10- mm HDL. [ABSTRACT FROM AUTHOR] |
| Copyright of Journal of Atmospheric & Oceanic Technology is the property of American Meteorological Society 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 | Links: – Type: pdflink Text: Availability: 0 |
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| Header | DbId: egs DbLabel: Engineering Source An: 5651025 AccessLevel: 6 PubType: Academic Journal PubTypeId: academicJournal PreciseRelevancyScore: 0 |
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| Items | – Name: Title Label: Title Group: Ti Data: Velocity Biases of Adaptive Filter Estimates in Heterodyne Doppler Lidar Measurements. – Name: Author Label: Authors Group: Au Data: <searchLink fieldCode="AR" term="%22Dabas%2C+Alain+M%2E%22">Dabas, Alain M.</searchLink><br /><searchLink fieldCode="AR" term="%22Drobinski%2C+Philippe%22">Drobinski, Philippe</searchLink><br /><searchLink fieldCode="AR" term="%22Flamant%2C+Pierre+H%2E%22">Flamant, Pierre H.</searchLink> – Name: TitleSource Label: Source Group: Src Data: <searchLink fieldCode="JN" term="%22Journal+of+Atmospheric+%26+Oceanic+Technology%22">Journal of Atmospheric & Oceanic Technology</searchLink>. Sep2000, Vol. 17 Issue 9, p1189. 14p. – Name: Subject Label: Subjects Group: Su Data: <searchLink fieldCode="DE" term="%22Adaptive+filters%22">Adaptive filters</searchLink><br /><searchLink fieldCode="DE" term="%22Heterodyne+reception%22">Heterodyne reception</searchLink><br /><searchLink fieldCode="DE" term="%22Frequency+spectra%22">Frequency spectra</searchLink> – Name: Abstract Label: Abstract Group: Ab Data: Frequency estimates by heterodyne Doppler lidar (HDL) may result in velocity bias due to the atmospheric speckle effect and an asymmetrical power spectrum of the probing pulse, as discussed in a previous paper by Dabas et al. In this paper, it has been shown that the velocity bias can be accounted for and corrected on a single measurement basis for a mean frequency estimator (e.g., pulse pair). In the present paper, a new procedure is proposed and validated for adaptive filters (e.g., Levin, notch, etc.), which accounts for nonstationary conditions such as wind turbulence, wind shear, and backscattered power gradient. The present study is conducted using both numerical simulations and actual data taken by a 10- mm HDL. [ABSTRACT FROM AUTHOR] – Name: AbstractSuppliedCopyright Label: Group: Ab Data: <i>Copyright of Journal of Atmospheric & Oceanic Technology is the property of American Meteorological Society 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.) |
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| RecordInfo | BibRecord: BibEntity: Identifiers: – Type: doi Value: 10.1175/1520-0426(2000)017<1189:VBOAFE>2.0.CO;2 Languages: – Code: eng Text: English PhysicalDescription: Pagination: PageCount: 14 StartPage: 1189 Subjects: – SubjectFull: Adaptive filters Type: general – SubjectFull: Heterodyne reception Type: general – SubjectFull: Frequency spectra Type: general Titles: – TitleFull: Velocity Biases of Adaptive Filter Estimates in Heterodyne Doppler Lidar Measurements. Type: main BibRelationships: HasContributorRelationships: – PersonEntity: Name: NameFull: Dabas, Alain M. – PersonEntity: Name: NameFull: Drobinski, Philippe – PersonEntity: Name: NameFull: Flamant, Pierre H. IsPartOfRelationships: – BibEntity: Dates: – D: 01 M: 09 Text: Sep2000 Type: published Y: 2000 Identifiers: – Type: issn-print Value: 07390572 Numbering: – Type: volume Value: 17 – Type: issue Value: 9 Titles: – TitleFull: Journal of Atmospheric & Oceanic Technology Type: main |
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