Radiometric measurements of the microwave emissivity of foam

Author

Rose, L.A. ; Gaiser, P.W. ; Germain, K. M St ; Dowgiallo, D.J. ; Asher, W. ; Reising, S.C. ; Horgan, K.A. ; Knapp, E.J. ; Farquharson, G.

Author_Institution

Remote Sensing Div., Naval Res. Lab., Washington, DC, USA

Volume

1

fYear

2001

fDate

2001

Firstpage

564

Abstract

Radiometric measurements of the microwave emissivity of foam were conducted in 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 made at 36.5 GHz; horizontal, vertical, +45, -45, left circular, and right circular polarization measurements were obtained at 10.8 GHz. Surface foam was generated by blowing compressed air through gas permeable tubes 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 beam-fill fraction of the foam generator

Keywords

electromagnetic wave polarisation; foams; microwave measurement; oceanographic techniques; radiometry; remote sensing; 10.8 GHz; 36.5 GHz; beam-fill fraction; bubble size distribution; foam layer thickness; horizontal polarization; left circular polarization; microwave emissivity; radiometric measurements; right circular polarization; vertical polarization; video micrographs; Aluminum; Cameras; Laboratories; Microwave measurements; Microwave radiometry; Polarization; Radiometers; Size measurement; Thickness measurement; Video compression;

fLanguage

English

Publisher

ieee

Conference_Titel

Geoscience and Remote Sensing Symposium, 2001. IGARSS '01. IEEE 2001 International

Conference_Location

Sydney, NSW

Print_ISBN

0-7803-7031-7

Type

conf

DOI

10.1109/IGARSS.2001.976223

Filename

976223