A modified back-projection algorithm for imaging Geo-referenced SAR data

2015 ◽  
Author(s):  
Songtao Zhao ◽  
Jie Chen ◽  
Bing Sun ◽  
Wei Yang ◽  
Pengbo Wang
Keyword(s):  
Projection Algorithm ◽  
Back Projection ◽  
Sar Data

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

Sensors ◽  
2021 ◽  
Vol 21 (15) ◽  
pp. 5099
Author(s):  
Juliana A. Góes ◽  
Valquiria Castro ◽  
Leonardo Sant’Anna Bins ◽  
Hugo E. Hernandez-Figueroa
Keyword(s):  
Standard Deviation ◽  
Error Analysis ◽  
Phase Error ◽  
Projection Algorithm ◽  
Back Projection ◽  
Flight Pattern ◽  
3D Images ◽  
Error Standard Deviation ◽  
Sar Data

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 ~12°, 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.

scholarly journals Back projection algorithm modification for higher probability of moving target detection in SAR data processing

2020 ◽  
Vol 25 (1) ◽  
pp. 38-49
Author(s):  
M. Balaban ◽  
◽  
Yu. Goncharenko ◽  
V. Gorobets ◽  
O. Kovorotniy ◽  
...  
Keyword(s):  
Data Processing ◽  
Target Detection ◽  
Projection Algorithm ◽  
Moving Target ◽  
Back Projection ◽  
Moving Target Detection ◽  
Sar Data

scholarly journals OC-0298: EPID dosimetry at the MR-Linac using a back-projection algorithm: proof of concept

2018 ◽  
Vol 127 ◽  
pp. S155-S156
Author(s):  
I. Torres Xirau ◽  
I. Olaciregui-Ruiz ◽  
B.J. Mijnheer ◽  
B. Vivas-Maiques ◽  
U.A. van der Heide ◽  
...  
Keyword(s):  
Projection Algorithm ◽  
Proof Of Concept ◽  
Back Projection ◽  
Epid Dosimetry ◽  
Algorithm Proof

scholarly journals Precision Imaging of Frequency Stepped SAR with Frequency Domain Extracted HRRP and Fast Factorized Back Projection Algorithm

2017 ◽  
Vol 2017 ◽  
pp. 1-13
Author(s):  
Can-bin Yin ◽  
Da Ran
Keyword(s):  
Fourier Transform ◽  
Frequency Domain ◽  
Single Point ◽  
Projection Algorithm ◽  
Great Promise ◽  
Back Projection ◽  
Imaging Processing ◽  
Block Partition ◽  
Range Resolution ◽  
High Range

Novel frequency domain extracted method (FDEM) to obtain high range resolution profile (HRRP) for frequency stepped synthetic aperture radar (SAR) is proposed in this paper, and the mathematical principle and formulas of this new HRRP obtaining idea combined with classical fast Fourier transform (FFT), chirp z transform (CZT), and single point Fourier transform (SPFT) are deduced, analyzed, and compared in detail. Based on the HRRP data, precision imaging processing is completed using a data block partition based fast factorized back projection algorithm. Imaging validations are executed and all results proved that the FDEM has a great capability of antijamming. It is more effective than conventional time domain IFFT method (TDM) and shows a great promise in frequency stepped radar imaging and applications.

scholarly journals A STUDY ON MILLIMETER-WAVE IMAGING OF CONCEALED OBJECTS: APPLICATION USING BACK-PROJECTION ALGORITHM

2012 ◽  
Vol 128 ◽  
pp. 457-477 ◽  
Author(s):  
Sevket Demirci ◽  
Harun Cetinkaya ◽  
Enes Yigit ◽  
Caner Ozdemir ◽  
Alexey A. Vertiy
Keyword(s):  
Millimeter Wave ◽  
Projection Algorithm ◽  
Back Projection ◽  
Millimeter Wave Imaging ◽  
Wave Imaging
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