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Probe-corrected near-field measurements on a truncated cylindera)
a)Revised version submitted to the Journal of the Acoustical Society of America October 2005. Original manuscript submitted February 2005.
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10.1121/1.2151789
/content/asa/journal/jasa/119/2/10.1121/1.2151789
http://aip.metastore.ingenta.com/content/asa/journal/jasa/119/2/10.1121/1.2151789

Figures

Image of FIG. 1.
FIG. 1.

Probe measures the field of the source on the truncated scan cylinder given by , , .

Image of FIG. 2.
FIG. 2.

Probe situated in a probe coordinate system. The input and output of the probe are determined by the mode amplitudes and , respectively. The total field outside the enclosing cylinder for the probe is described in terms of outgoing and standing waves.

Image of FIG. 3.
FIG. 3.

Receiving pattern of piston probes with , , , and .

Image of FIG. 4.
FIG. 4.

Receiving coefficients at of piston probes with , , , and .

Image of FIG. 5.
FIG. 5.

Geometry for translation and rotation of cylindrical wave functions.

Image of FIG. 6.
FIG. 6.

Correction factor at for piston probes with , , , and that measure the field on a scan cylinder of radius .

Image of FIG. 7.
FIG. 7.

Real (top) and imaginary (bottom) parts of the function and its asymptotic approximation for .

Image of FIG. 8.
FIG. 8.

Upper envelope of the taper functions for and for piston probes with , , , and . All non-negligible terms of the expansion for the taper function are included.

Image of FIG. 9.
FIG. 9.

Far-field error at computed from a -truncated scan with , , and . The far-field error is calculated at with increments of equal to 0.0125. The limiting angles in are indicated with vertical solid lines. The field is produced by a single point source at .

Image of FIG. 10.
FIG. 10.

Truncated scan cylinder with radius . The scanned region is the solid circular arc given by . The point source is located at , and the two limiting angles are marked by *.

Image of FIG. 11.
FIG. 11.

Upper envelope of the taper functions of piston probes with , , , and and . Terms with are included in the top plot. Terms with are included in the bottom plot.

Image of FIG. 12.
FIG. 12.

Upper envelope for the error of the far field at computed from a truncated scan with , , and . The point source is located at and the angular boundaries of the scan are indicated with vertical solid lines and the limiting angles are marked by . Top plot: angular sampling is and terms with are included. Middle plot: angular sampling is and terms with are included. Bottom plot: angular sampling is and terms with are included.

Image of FIG. 13.
FIG. 13.

Upper envelope for the error of the far field at computed from a truncated scan with , , and . The point source is located at and the angular boundaries of the scan are indicated with vertical solid lines and the limiting angles are marked by *. The angular sampling is and terms with are included.

Tables

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TABLE I.

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2006-02-01
2014-04-18
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Probe-corrected near-field measurements on a truncated cylindera)
http://aip.metastore.ingenta.com/content/asa/journal/jasa/119/2/10.1121/1.2151789
10.1121/1.2151789
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