Highly Squinted Imaging for Diving SAR with 3-Dacceleration

A uniform linear motion is generally assumed in traditional synthetic aperture radar(SAR) processing algorithms. However, it is inevitable that if there is 3-D acceleration, the image formulation processing complexity will be significantly increased, especially in highly squinted situations. This pa...

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Bibliographic Details
Published inIGARSS 2018 - 2018 IEEE International Geoscience and Remote Sensing Symposium pp. 8917 - 8920
Main Authors Huang, Bang, Zhao, Xin, Du, Dunwei, Zhang, Shunsheng, Wang, Wen-Qin
Format Conference Proceeding
LanguageEnglish
Published IEEE 01.07.2018
Subjects
2D-NUFFT algorithm
3-D acceleration model
Acceleration
Azimuth
highly squinted
Imaging
Mathematical model
nonuniform fast Fourier transform (NUFFT)
Radar imaging
Synthetic aperture radar
synthetic aperture radar (SAR)
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Summary:A uniform linear motion is generally assumed in traditional synthetic aperture radar(SAR) processing algorithms. However, it is inevitable that if there is 3-D acceleration, the image formulation processing complexity will be significantly increased, especially in highly squinted situations. This paper aims to handle the imaging problems in the highly squinted SAR with three-dimensional acceleration, which utilizes the Taylor formula to expand the distance equation and further resolve it. Based on the formulated range formula, we further utilize the two- dimensional non-uniform Fast Fourier Transform (2D-NUFFT) to obtain focused SAR imagery. The proposed methods are verified with simulation results.
ISSN:2153-7003
DOI:10.1109/IGARSS.2018.8519470