发明名称 |
3D FOURIER TRANSFORMS FOR IRREGULARLY SAMPLED DATA |
摘要 |
A collected data is divided into M single valued subsets, where M is greater than zero. A two-dimensional subset image is formed from each single valued subset. Then, a fast Fourier transform is performed on each image to obtain a two-dimensional subset frequency space. Next, a one-dimensional discrete Fourier transform in z, where z is an integer equal to or greater than zero, is performed. Lastly, a two-dimensional discrete Fourier transform in (x,y) for each value of z is performed, thereby forming the three-dimensional volume from the collected data set.
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申请公布号 |
WO0248734(A9) |
申请公布日期 |
2003.04.17 |
申请号 |
WO2001US47506 |
申请日期 |
2001.12.11 |
申请人 |
ESSEX CORPORATION;WOODFORD, PAUL, W.;FROEHLICH, FRED, F. |
发明人 |
WOODFORD, PAUL, W.;FROEHLICH, FRED, F. |
分类号 |
G01S13/90;(IPC1-7):G01S13/90;G06T11/00 |
主分类号 |
G01S13/90 |
代理机构 |
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