Omega-k Algorithm for Airborne Spatial Invariant Bistatic Spotlight SAR Imaging

Bistatic spotlight synthetic aperture radar (SAR) which uses a separated transmitter and receiver has been studied intensively due to its flexibility. To reconstruct the image for the bistatic SAR in the parallel track configuration, where the transmitter and the receiver have equal velocity, we mod...

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Bibliographic Details
Published in:IEEE transactions on geoscience and remote sensing 2009-01, Vol.47 (1), p.238-250
Main Authors: SHIN, Hee-Sub, LIM, Jong-Tae
Format: Article
Language:English
Subjects:
Algorithms
Applied geophysics
Approximation
Bistatic spotlight synthetic aperture radar (SAR)
Earth sciences
Earth, ocean, space
Exact sciences and technology
Flexibility
Image analysis
Image converters
Image quality
Image reconstruction
Internal geophysics
Mathematical analysis
omega-k algorithm
Radar polarimetry
Radar tracking
Radio transmitters
Receivers
Synthetic aperture radar
Target tracking
Time of arrival estimation
Transmitters
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Description
Summary:Bistatic spotlight synthetic aperture radar (SAR) which uses a separated transmitter and receiver has been studied intensively due to its flexibility. To reconstruct the image for the bistatic SAR in the parallel track configuration, where the transmitter and the receiver have equal velocity, we modify the omega-k algorithm. Specifically, using the extended Taylor approximation (ETA), we convert the parallel track configuration into the single track configuration. Then, using the principle of the stationary phase, we propose an analytical method to increase the image quality of bistatic SAR systems.
ISSN:0196-2892
1558-0644
DOI:10.1109/TGRS.2008.2002954