Repository logo
 

Radiometric measurements of the microwave emissivity of foam

Simple item page
dc.contributor.authorKnapp, E. J., author
dc.contributor.authorFarquharson, G., author
dc.contributor.authorHorgan, Kevin A., author
dc.contributor.authorDowgiallo, D. J., author
dc.contributor.authorSt. Germain, K. M., author
dc.contributor.authorGaiser, Peter W., author
dc.contributor.authorReising, Steven C., author
dc.contributor.authorAsher, William E., author
dc.contributor.authorRose, Louis Allen, author
dc.contributor.authorIEEE, publisher
dc.date.accessioned2007-01-03T07:29:57Z
dc.date.available2007-01-03T07:29:57Z
dc.date.issued2002
dc.description.abstractRadiometric measurements of the microwave emissivity of foam were conducted during May 2000 at the Naval Research Laboratory's Chesapeake Bay Detachment using radiometers operating at 10.8 and 36.5 GHz. Horizontal and vertical polarization measurements were performed at 36.5 GHz; horizontal, vertical, +45°, ­45°, left-circular, and right-circular polarization measurements were obtained at 10.8 GHz. These measurements were carried out over a range of incidence angles from 30° to 60°. Surface foam was generated by blowing compressed air through a matrix of gas-permeable tubing supported by an aluminum frame and floats. Video micrographs of the foam were used to measure bubble size distribution and foam layer thickness. A video camera was boresighted with the radiometers to determine the beam-fill fraction of the foam generator. Results show emissivities that were greater than 0.9 and approximately constant in value over the range of incidence angles for vertically polarized radiation at both 10.8 and 36.5 GHz, while emissivities of horizontally polarized radiation showed a gradual decrease in value as incidence angle increased. Emissivities at +45°, ­45°, left-circular, and right-circular polarizations were all very nearly equal to each other and were in turn approximately equal to the average values of the horizontal and vertical emissivities in each case.
dc.description.sponsorshipThis work was sponsored by the Department of the Navy, Office of Naval Research under Award N0014-00-1-280 to the University of Massachusetts, Award N00014-00-0152 to the University of Washington, and Award N0001400WX21032 to the Naval Research Laboratory.
dc.format.mediumborn digital
dc.format.mediumarticles
dc.identifier.bibliographicCitationRose, L. A., et al., Radiometric Measurements of the Microwave Emissivity of Foam, IEEE Transactions on Geoscience and Remote Sensing 40, no.12 (December 2002): 2619-2625.
dc.identifier.urihttp://hdl.handle.net/10217/681
dc.languageEnglish
dc.language.isoeng
dc.publisherColorado State University. Libraries
dc.relation.ispartofFaculty Publications
dc.rights©2002 IEEE.
dc.rightsCopyright and other restrictions may apply. User is responsible for compliance with all applicable laws. For information about copyright law, please see https://libguides.colostate.edu/copyright.
dc.subjectmicrowave radiometry
dc.subjectfoam
dc.subjectemissivity
dc.subjectpolarimetry
dc.titleRadiometric measurements of the microwave emissivity of foam
dc.typeText

Files

Original bundle
Now showing 1 - 1 of 1
Thumbnail Image
Name:
ECEscr00011.pdf
Size:
537.11 KB
Format:
Adobe Portable Document Format
Description:
Download

Collections

Publications