A FIXED-DELAY, FREQUENCY-SHIFTED MICHELSON INTERFEROMETER FOR REMOTE AIR TEMPERATURE MEASUREMENT

Persistent Link:
http://hdl.handle.net/10150/282056
Title:
A FIXED-DELAY, FREQUENCY-SHIFTED MICHELSON INTERFEROMETER FOR REMOTE AIR TEMPERATURE MEASUREMENT
Author:
Johnson, Lawrence Alan, 1947-
Issue Date:
1981
Publisher:
The University of Arizona.
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.
Abstract:
The spectral width of single-frequency radiation scattered in the atmosphere may be used to determine air temperature. In general, the measurement is complicated by pressure dependent changes in the spectral profile of the scattered radiation and by the inherently low received signal levels. A fixed-delay Michelson interferometer minimizes both of these problems by: (1) exhibiting a low sensitivity to pressure induced changes in the scattered spectrum and (2) optimally utilizing the available signal. By frequency shifting the signal in one arm of the interferometer relative to the other it is possible to efficiently modulate the output of the interferometer and make it insensitive to small changes in the center frequency of the scattered spectrum. Laboratory results obtained using a fixed-delay, frequency-shifted Michelson interferometer demonstrate the ability of this instrument to remotely measure air temperatures in the range 290 K to 310 K with an uncertainty of ±2 K with averaging times on the order of seconds at a received signal level of 6 x 10⁻¹⁰ watts.
Type:
text; Dissertation-Reproduction (electronic)
Keywords:
Interferometers.; Atmospheric temperature -- Measurement.; Atmospheric temperature -- Remote sensing.
Degree Name:
Ph.D.
Degree Level:
doctoral
Degree Program:
Graduate College; Optical Sciences
Degree Grantor:
University of Arizona
Advisor:
Dereniak, Eustace

Full metadata record

DC FieldValue Language
dc.language.isoen_USen_US
dc.titleA FIXED-DELAY, FREQUENCY-SHIFTED MICHELSON INTERFEROMETER FOR REMOTE AIR TEMPERATURE MEASUREMENTen_US
dc.creatorJohnson, Lawrence Alan, 1947-en_US
dc.contributor.authorJohnson, Lawrence Alan, 1947-en_US
dc.date.issued1981en_US
dc.publisherThe University of Arizona.en_US
dc.rightsCopyright © 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.description.abstractThe spectral width of single-frequency radiation scattered in the atmosphere may be used to determine air temperature. In general, the measurement is complicated by pressure dependent changes in the spectral profile of the scattered radiation and by the inherently low received signal levels. A fixed-delay Michelson interferometer minimizes both of these problems by: (1) exhibiting a low sensitivity to pressure induced changes in the scattered spectrum and (2) optimally utilizing the available signal. By frequency shifting the signal in one arm of the interferometer relative to the other it is possible to efficiently modulate the output of the interferometer and make it insensitive to small changes in the center frequency of the scattered spectrum. Laboratory results obtained using a fixed-delay, frequency-shifted Michelson interferometer demonstrate the ability of this instrument to remotely measure air temperatures in the range 290 K to 310 K with an uncertainty of ±2 K with averaging times on the order of seconds at a received signal level of 6 x 10⁻¹⁰ watts.en_US
dc.typetexten_US
dc.typeDissertation-Reproduction (electronic)en_US
dc.subjectInterferometers.en_US
dc.subjectAtmospheric temperature -- Measurement.en_US
dc.subjectAtmospheric temperature -- Remote sensing.en_US
thesis.degree.namePh.D.en_US
thesis.degree.leveldoctoralen_US
thesis.degree.disciplineGraduate Collegeen_US
thesis.degree.disciplineOptical Sciencesen_US
thesis.degree.grantorUniversity of Arizonaen_US
dc.contributor.advisorDereniak, Eustaceen_US
dc.identifier.proquest8206887en_US
dc.identifier.oclc8712850en_US
dc.identifier.bibrecord.b13918357en_US
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