Radio wave measurement of surface roughness through...

Details Radio wave measurement of surface roughness through... Radio wave measurement of surface roughness through...

2005-03-08

2005-03-08

Raevis, Robert (Department: 2856)

Measuring and testing

Surface and cutting edge testing

Roughness

Reexamination Certificate

active

06862922

ABSTRACT:
Systems and methods for radio wave measurement of surface roughness using electromagnetic boundary conditions. A representative method includes measuring electromagnetic wave fields by monitoring a plurality of signals at several frequencies from different directions; obtaining a plurality of electromagnetic boundary conditions from the plurality of signals; and determining a roughness energy spectrum by utilizing the plurality of electromagnetic boundary conditions.

REFERENCES:
Barrick and Fitzgerald, “The Failure of “Classic” Perturbation Theory at a Rough Neumann Boundary Near Grazing,”IEEE Transactions on Antennas and Propagation, 48(9), 1452-1460, Sep. 2000.
Fitzgerald, “Reconstruction of the Surface Power Spectrum from Reflectivity Data,”Optics Letters, 24(6), 364-366, Mar. 1999.
Marks′ Standard Handbook for Mechanical Engineers, 10th ed., McGraw Hill, (Avallone and Baumeister, eds.), 1996.
Radar Handbook, 2nd ed., McGraw Hill, (Skolnik, ed.), 1990.
The Electrical Engineering Handbook, CRC Press, (Dorf, eds.), 1993.
Van Nostrand's Scientific Encyclopedia, 8th ed., Van Nostrand Reinhold, (Considine and Considine, eds.), 1995.

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