In this resultant range-angle data, any point P([x.sub.n], [y.sub.n]) exhibits a sinusoidal behavior for the 360[degrees] variation of azimuth angle [phi] because of circular scanning arrangement.
The algorithm is specially developed for multiangle multifrequency monostatic radar set-up with circular scanning geometry of object under test.
A mask of concentric circles (circular scanning
paths) centered at OD center was created for each image, with the smallest circle corresponding to the OD boundary with diameter [D.sub.OD].
As the size of the acoustic transducer is much larger than the wavelength of the acoustic wave, a circular scanning
system is adopted in order to implement the requirement of half wavelength spacing between the sensors.
The size of the circular scanning
field covers 300 [micro]m x 300 [micro]m, and the highest achievable resolution is 2 [micro]m.
The above reconstruction methods require enclosed detection for circular scanning
or an unbounded open surface for planar scanning, which are generally difficult to implement in a clinical situation.
Forming high-precision angular measuring structures by the laser pattern generators with circular scanning
, Measurement Science Review 6(1): 10-13.
These items were placed about 1-1/2 cm above the white circular scanning
head on a Plexiglas sheet.
A He-Ne laser beam focused down to spot, performs circular scanning
by a rotating wedge prism of the sample measurement volume.