Method and apparatus for coherent electromagnetic field imaging

Details Method and apparatus for coherent electromagnetic field imaging Method and apparatus for coherent electromagnetic field imaging

1997-05-30

1999-02-23

Turner, Samuel A.

Optics: measuring and testing

By particle light scattering

With photocell detection

G01B 902

Patent

active

058750304

ABSTRACT:
Apparatus and method for imaging objects through the.sub.-- inverse transformation of a set of Fourier coefficients measured by a detector. The Fourier coefficients are generated by heterodyning the electromagnetic field reflected from an object with a reference electromagnetic field that has had the transverse phase modulated with a Fourier basis set. Doppler imaging of objects is accomplished through temporal frequency filtering of the Fourier coefficients at a plurality of heterodyne intermediate frequencies.

REFERENCES:
patent: 4417813 (1983-11-01), Bartholomew
patent: 4563091 (1986-01-01), Dandliker
patent: 5428447 (1995-06-01), Toida

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