Journal ArticleDOI
Time-Domain Reconstruction Algorithms for FMCW-SAR
TLDR
Numerical simulations illustrate the performance of the algorithms, showing that the start-stop approximation may not be valid for FMCW-SAR, whereas the modified backprojection algorithm works very well here.Abstract:
In this letter, we develop time-domain reconstruction algorithms for frequency-modulated continuous wave synthetic aperture radar (FMCW-SAR). The algorithms considered here are the time-domain correlation algorithm, and two versions of the backprojection algorithm: the standard one based on the start-stop approximation, and a modified version that takes into account the movement of the sensor during the transmission of the pulse. Numerical simulations illustrate the performance of the algorithms, showing that the start-stop approximation may not be valid for FMCW-SAR, whereas the modified backprojection algorithm works very well here.read more
Citations
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Journal ArticleDOI
On the Processing of Very High Resolution Spaceborne SAR Data
Pau Prats-Iraola,Rolf Scheiber,Marc Rodriguez-Cassola,Josef Mittermayer,Steffen Wollstadt,Francesco De Zan,Benjamin Bräutigam,Marco Schwerdt,Andreas Reigber,Alberto Moreira +9 more
TL;DR: This paper addresses several important aspects that need to be considered for the processing of spaceborne synthetic aperture radar (SAR) data with resolutions in the decimeter range, and the complete focusing methodology is expounded and validated using simulated point targets and staring spotlight data acquired by TerraSAR-X.
Journal ArticleDOI
THz 3-D Image Formation Using SAR Techniques: Simulation, Processing and Experimental Results
TL;DR: In this paper, an active frequency-modulated continuous wave (FMCW) terahertz (THz) system has been developed to image objects in millimeter-scale resolution in three dimensions.
Book ChapterDOI
Spotlight Synthetic Aperture Radar
TL;DR: The decades of development of synthetic aperture radar (SAR) have resulted in a family of remarkable signal processing techniques that are capable of producing imagery whose cross-range resolution is independent of range and much finer than is possible to achieve with any practically-deployable real-beam antenna as mentioned in this paper.
Journal ArticleDOI
A High-Resolution 220-GHz Ultra-Wideband Fully Integrated ISAR Imaging System
Ali Mostajeran,S. M. H. Naghavi,Mohammad Javad Emadi,Sreekiran Samala,Brian P. Ginsburg,Mohammed Aseeri,Ehsan Afshari +6 more
TL;DR: In this article, an ultra-wideband fully integrated imaging radar at sub-terahertz (sub-THz) frequencies is presented, which demonstrates a fine lateral resolution without using any focal lens/mirror.
Journal ArticleDOI
Arc FMCW SAR and Applications in Ground Monitoring
TL;DR: The signal processing of Arc FMCW SAR is discussed and its first results in change detection and interferometric SAR are obtained, which show its huge potential in ground-based applications.
References
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Journal Article
Digital processing of synthetic aperture radar data
N. Hamano,F. Komura,Y. Kubo +2 more
Journal ArticleDOI
Modified range-Doppler processing for FM-CW synthetic aperture radar
TL;DR: The combination of compact frequency-modulated continuous-wave (FM-CW) technology and high-resolution synthetic aperture radar (SAR) processing techniques should pave the way for the development of a lightweight, cost-effective, high- resolution, airborne imaging radar.
Journal ArticleDOI
Focusing of Airborne Synthetic Aperture Radar Data From Highly Nonlinear Flight Tracks
TL;DR: Two potential approaches for processing SAR data from such highly nonlinear flight tracks are proposed, namely, a patchwise frequency-domain processing and mosaicking technique and a time-domain back-projection-based technique.
Journal ArticleDOI
Focus FMCW SAR Data Using the Wavenumber Domain Algorithm
TL;DR: A signal model is proposed to address the effects of the continuous motion during the transmit time on the echoed signal and the application of the wavenumber domain algorithm for the FMCW SAR data is discussed.
Book ChapterDOI
Spotlight Synthetic Aperture Radar
TL;DR: The decades of development of synthetic aperture radar (SAR) have resulted in a family of remarkable signal processing techniques that are capable of producing imagery whose cross-range resolution is independent of range and much finer than is possible to achieve with any practically-deployable real-beam antenna as mentioned in this paper.
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