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Multifrequency Biplanar Interferometric Imaging
DOI:10.1109/LGRS.2009.2029533.png)
摘要
En 中文
The resolution of 3-D imaging is greatly improved using a new multifrequency biplanar interferometry (MBI) technique. Using data from a multifrequency-acoustic pulse-echo system, ranges to coherent targets, estimated from propagation delays, and the phase differences between echoes received with four quadrants of a split-aperture array are converted to Cartesian distances, and transformed into Earth coordinates. The collective data set is interpolated to create a surface closely approximating the target's image. The resolution of the resulting image is improved orders of magnitude relative to those created with measures based on echo-intensity or single-frequency uniplanar interferometry. The effectiveness of MBI is demonstrated using data from a multifrequency (18 to 200 kHz) split-aperture echosounder system to produce composite high-resolution (sub-meter precision) images of the seabed sensed at long ranges (tens to hundreds of meters). MBI can be broadly applied to data from split-aperture remote-sensing systems which use acoustic or electromagnetic waves.
Keyword:
Acoustic imaging
echosounder
interferometry
multiple frequency
期刊
IF:
16.4
论文数:
1.0W
被引数:
5.1K
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