Processing of Ultrahigh-Resolution Spaceborne Sliding Spotlight SAR Data on Curved Orbit

In high-resolution spaceborne synthetic aperture radars (SARs), with increasing synthetic aperture length on curved orbits, the hyperbolic range history (HRH) assumption deteriorates, and simple analytic transfer functions in the Doppler domain used in SAR processing do not exist. A subsection HRH m...

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Bibliographic Details
Published in:IEEE transactions on aerospace and electronic systems 2013-04, Vol.49 (2), p.819-839
Main Authors: He, Feng, Chen, Qi, Dong, Zhen, Sun, Zaoyu
Format: Article
Language:English
Subjects:
Aircraft components
Apertures
Azimuth
Bandwidth
Curved
Doppler effect
Electronic systems
History
Mathematical analysis
Orbits
Sliding
Synthetic aperture radar
Transfer functions
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Summary:In high-resolution spaceborne synthetic aperture radars (SARs), with increasing synthetic aperture length on curved orbits, the hyperbolic range history (HRH) assumption deteriorates, and simple analytic transfer functions in the Doppler domain used in SAR processing do not exist. A subsection HRH model is proposed. Ultra- high-resolution sliding spotlight SAR data can be handled satisfactorily, and simple analytic transform functions are used all the same. The proposed range history model is also applicable to bistatic SARs.
ISSN:0018-9251
1557-9603
DOI:10.1109/TAES.2013.6494383