A Novel 3D Imaging Method for Airborne Downward-Looking Sparse Array SAR Based on Special Squint Model
Joint Authors
Ren, Xiaozhen
Qin, Yao
Qiao, Lihong
Source
International Journal of Antennas and Propagation
Issue
Vol. 2014, Issue 2014 (31 Dec. 2014), pp.1-10, 10 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2014-12-31
Country of Publication
Egypt
No. of Pages
10
Main Subjects
Abstract EN
Three-dimensional (3D) imaging technology based on antenna array is one of the most important 3D synthetic aperture radar (SAR) high resolution imaging modes.
In this paper, a novel 3D imaging method is proposed for airborne down-looking sparse array SAR based on the imaging geometry and the characteristic of echo signal.
The key point of the proposed algorithm is the introduction of a special squint model in cross track processing to obtain accurate focusing.
In this special squint model, point targets with different cross track positions have different squint angles at the same range resolution cell, which is different from the conventional squint SAR.
However, after theory analysis and formulation deduction, the imaging procedure can be processed with the uniform reference function, and the phase compensation factors and algorithm realization procedure are demonstrated in detail.
As the method requires only Fourier transform and multiplications and thus avoids interpolations, it is computationally efficient.
Simulations with point scatterers are used to validate the method.
American Psychological Association (APA)
Ren, Xiaozhen& Qin, Yao& Qiao, Lihong. 2014. A Novel 3D Imaging Method for Airborne Downward-Looking Sparse Array SAR Based on Special Squint Model. International Journal of Antennas and Propagation،Vol. 2014, no. 2014, pp.1-10.
https://search.emarefa.net/detail/BIM-1036290
Modern Language Association (MLA)
Ren, Xiaozhen…[et al.]. A Novel 3D Imaging Method for Airborne Downward-Looking Sparse Array SAR Based on Special Squint Model. International Journal of Antennas and Propagation No. 2014 (2014), pp.1-10.
https://search.emarefa.net/detail/BIM-1036290
American Medical Association (AMA)
Ren, Xiaozhen& Qin, Yao& Qiao, Lihong. A Novel 3D Imaging Method for Airborne Downward-Looking Sparse Array SAR Based on Special Squint Model. International Journal of Antennas and Propagation. 2014. Vol. 2014, no. 2014, pp.1-10.
https://search.emarefa.net/detail/BIM-1036290
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1036290