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Spiral SAR Imaging with Fast Factorized Back-Projection: A Phase Error Analysis

被引：4
|
作者：
Goes, Juliana A. [1 ]
Castro, Valquiria [1 ]
Bins, Leonardo Sant'Anna [2 ]
Hernandez-Figueroa, Hugo E. [1 ]
机构：
[1] Univ Estadual Campinas, UNICAMP, Sch Elect & Comp Engn, BR-13083852 Campinas, Brazil
[2] Natl Inst Space Res INPE, BR-12227010 Sao Jose Dos Campos, Brazil
来源：
SENSORS | 2021年 / 21卷 / 15期
关键词：
synthetic aperture radar (SAR); fast factorized back-projection (FFBP); 3D imaging; drone; CIRCULAR SAR;
D O I：
10.3390/s21155099
中图分类号：
O65 [分析化学];
学科分类号：
070302 ; 081704 ;
摘要：
This paper presents a fast factorized back-projection (FFBP) algorithm that can satisfactorily process real P-band synthetic aperture radar (SAR) data collected from a spiral flight pattern performed by a drone-borne SAR system. Choosing the best setup when processing SAR data with an FFBP algorithm is not so straightforward, so predicting how this choice will affect the quality of the output image is valuable information. This paper provides a statistical phase error analysis to validate the hypothesis that the phase error standard deviation can be predicted by geometric parameters specified at the start of processing. In particular, for a phase error standard deviation of similar to 12 degrees, the FFBP is up to 21 times faster than the direct back-projection algorithm for 3D images and up to 13 times faster for 2D images.
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收藏
页数：20
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