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Imaging of Moving Targets With Multi-Static SAR Using an Overcomplete Dictionary

Ivana Stojanovic, William Clem Karl
2010 IEEE Journal on Selected Topics in Signal Processing  
This paper presents a method for imaging of moving targets using multi-static SAR by treating the problem as one of spatial reflectivity signal inversion over an overcomplete dictionary of target velocities  ...  imaged with transmitters and receivers randomly dispersed in a multi-static geometry within a narrow forward cone around the scene of interest.  ...  First, the scene contains a sparse set of targets with nonzero reflectivity and second, the introduction and use of an overcomplete dictionary mandates that we seek a sparse solution vector .  ... 
doi:10.1109/jstsp.2009.2038982 fatcat:iupkiewmyfdbvfvh6r7wqphf7y

Compressed sensing of mono-static and multi-static SAR

Ivana Stojanovic, W. Clem Karl, Mujdat Cetin, Edmund G. Zelnio, Frederick D. Garber
2009 Algorithms for Synthetic Aperture Radar Imagery XVI  
With this motivation we compare the mutual coherence and corresponding reconstruction behavior of various mono-static and ultra-narrow band multi-static configurations, which trade-off frequency for geometric  ...  Different mono and multi-static SAR measurement configurations produce different Fourier sampling patterns.  ...  Orthonormal bases have zero mutual coherence and an overcomplete dictionary with a small mutual coherence is taken to be incoherent.  ... 
doi:10.1117/12.818808 fatcat:hru2utsjsjaclcfylw7gu57gdm

Compressed Sensing of Monostatic and Multistatic SAR

Ivana Stojanovic, Mujdat Cetin, W. Clem Karl
2013 IEEE Geoscience and Remote Sensing Letters  
With this motivation we compare the mutual coherence and corresponding reconstruction behavior of various mono-static and ultra-narrow band multi-static configurations, which trade-off frequency for geometric  ...  Different mono and multi-static SAR measurement configurations produce different Fourier sampling patterns.  ...  Orthonormal bases have zero mutual coherence and an overcomplete dictionary with a small mutual coherence is taken to be incoherent.  ... 
doi:10.1109/lgrs.2013.2259794 fatcat:ekckhayuxfhfpc7irwrwtfrdb4

Automatic Target Recognition on Synthetic Aperture Radar Imagery: A Survey [article]

O. Kechagias-Stamatis, N. Aouf
2020 arXiv   pre-print
most popular dataset for the SAR domain, namely the Moving and Stationary Target Acquisition and Recognition (MSTAR) dataset.  ...  Based on the current methodology trends, we propose a taxonomy for the SAR ATR architectures, along with a direct comparison of the strengths and weaknesses of each method under both standard and extended  ...  MOVING AND STATIONARY TARGET ACQUISITION AND RECOGNITION DATASET The MSTAR dataset comprises of X-band SAR imagery with a 1x1 ft resolution, 360° articulation with a 1° spacing, and an image size of 128x128  ... 
arXiv:2007.02106v2 fatcat:qz3kfu5varasjkagj44pw5byei

Implications of SAR ambiguities in estimating the motion of slow targets

David A. Garren, Edmund Zelnio, Frederick D. Garber
2017 Algorithms for Synthetic Aperture Radar Imagery XXIV  
The present analysis demonstrates the extent of the challenges associated with attempting to estimate of the underlying motion of targets using SAR measurement data.  ...  in the imaged scene.  ...  ., "Imaging of moving targets with multi-static SAR using an overcomplete dictionary," IEEE Journal of Selected Topics in Signal Processing 4, 164-176 (Feb 2010). [9] Leducq, P., Ferro-Famil, L., and Pottier  ... 
doi:10.1117/12.2263096 fatcat:kt6wsigm3nfefnnih5eoybxrye

New models and super-resolution techniques for short-range radar: Theory and experiments

B. Mamandipoor, A. Arbabian, U. Madhow
2016 2016 Information Theory and Applications Workshop (ITA)  
model when we employ sparse arrays can be eliminated by using spatial aggregation, using patch-based scatterer models as our dictionary, (c) optimization of patch size based on estimation-theoretic bounds  ...  , (d) super-resolution using a recently developed algorithm combining Newton methods with greedy pursuit.  ...  Image reconstruction using NOMP algorithm in the sparse array configuration. We refine both the location and size of circular patches. IX.  ... 
doi:10.1109/ita.2016.7888138 dblp:conf/ita/MamandipoorAM16 fatcat:tplcpgynyjbipbatsbjct3i5ja

Refocusing of Moving Targets in SAR Images via Parametric Sparse Representation

Yichang Chen, Gang Li, Qun Zhang, Jinping Sun
2017 Remote Sensing  
By updating the reflectivities of moving target scatterers and the parametric transform in an iterative fashion, the phase compensation parameter can be accurately estimated and the SAR images of moving  ...  In regular SAR images, moving targets are defocused due to unknown motion parameters. Refocusing of moving targets requires accurate phase compensation of echo data.  ...  Conflicts of Interest: The authors declare no conflict of interest.  ... 
doi:10.3390/rs9080795 fatcat:5p3a7czymzfvhplobry2oth7oy

Design of large polyphase filters in the Quadratic Residue Number System

Gian Carlo Cardarilli, Alberto Nannarelli, Yann Oster, Massimo Petricca, Marco Re
2010 2010 Conference Record of the Forty Fourth Asilomar Conference on Signals, Systems and Computers  
We present a sparsity-based algorithm for image change detection. A series of reference images in conjunction with an orthonormal basis are used to form an overcomplete basis.  ...  For example, sparse representation of signal in an overcomplete dictionary or reconstruction of a sparse signal from a small number of linear measurements.  ... 
doi:10.1109/acssc.2010.5757589 fatcat:ccxnu5owr5fyrcjcqukumerueq

ICP [chapter]

2014 Computer Vision  
Definition An image decomposition is the result of a mathematical transformation of an image into a new set of images I 376 Image Enhancement and Restoration 6.  ...  Tappen MF, Adelson EH, Freeman WT (2006) Estimating intrinsic component images using non-linear regression.  ...  For instance, using overcomplete dictionaries adapted to the representation of image geometry and texture, Elad et al.  ... 
doi:10.1007/978-0-387-31439-6_100030 fatcat:kfm7gu7zenb6tlz5qu26dvf3q4

A Survey of Sparse Representation: Algorithms and Applications

Zheng Zhang, Yong Xu, Jian Yang, Xuelong Li, David Zhang
2015 IEEE Access  
Specifically, an experimentally comparative study of these sparse representation algorithms was presented. The Matlab code used in this paper can be available at: http://www.yongxu.org/lunwen.html.  ...  For example, in terms of different norm minimizations used in sparsity constraints, the methods can be roughly categorized into five groups: sparse representation with l_0-norm minimization, sparse representation  ...  Moreover, they thank the editor, an associate editor, and referees for helpful comments and suggestions which greatly improved this paper.  ... 
doi:10.1109/access.2015.2430359 fatcat:fdi57s5xxfc3jekrgbgxigkt2q

Super-resolution: a comprehensive survey

Kamal Nasrollahi, Thomas B. Moeslund
2014 Machine Vision and Applications  
The current comprehensive survey provides an overview of most of these published works by grouping them in a broad taxonomy.  ...  Furthermore, common issues in super-resolution algorithms, such as imaging models and registration algorithms, optimization of the cost functions employed, dealing with color information, improvement factors  ...  providing us with his thoughtful comments and feedbacks.  ... 
doi:10.1007/s00138-014-0623-4 fatcat:wtfkpzbrwbajlebfvemtspz3um

Pedestrian Detection: An Evaluation of the State of the Art

P. Dollar, C. Wojek, B. Schiele, P. Perona
2012 IEEE Transactions on Pattern Analysis and Machine Intelligence  
To address these shortcomings, we perform an extensive evaluation of the state of the art in a unified framework.  ...  In recent years, the number of approaches to detecting pedestrians in monocular images has grown steadily.  ...  The authors thank Seigo Watanabe of Nissan for collecting the video and for many useful discussions. They would also like to thank all authors that made their detection code available.  ... 
doi:10.1109/tpami.2011.155 pmid:21808091 fatcat:lqmkh7sd25cydphik6zjmol74q

Analysis of room transfer function and reverberant signal statistics

Eleftheria Georganti, John Mourjopoulos, Finn Jacobsen
2008 Journal of the Acoustical Society of America  
We here advocate for non-fixed dictionaries, with a multi-layered hierarchical decomposition: the first layer roughly describes the signal, in an extremely redundant, signaltailored, structured dictionary  ...  Two different EMF field strengths were used: SAR of 0.069 W"kg using a commercially available phone and SAR of 1.75 W"kg using a patch antenna.  ...  The computation of early reflection paths is based on an efficient beam-tracing algorithm capable of real-time detection of specular reflection paths in a static geometry with one or several moving listener͑s͒  ... 
doi:10.1121/1.2935346 fatcat:lxgnqr6tozajhge3ydet3xomam

A virtual auditory environment for investigating the auditory signal processing of realistic sounds

Sylvain Favrot, Jörg M. Buchholz
2008 Journal of the Acoustical Society of America  
We here advocate for non-fixed dictionaries, with a multi-layered hierarchical decomposition: the first layer roughly describes the signal, in an extremely redundant, signaltailored, structured dictionary  ...  Two different EMF field strengths were used: SAR of 0.069 W"kg using a commercially available phone and SAR of 1.75 W"kg using a patch antenna.  ...  The computation of early reflection paths is based on an efficient beam-tracing algorithm capable of real-time detection of specular reflection paths in a static geometry with one or several moving listener͑s͒  ... 
doi:10.1121/1.2936003 fatcat:ontu6yamdvgbnooet5fe36fm74

Temporal suppression and augmentation of click‐evoked otoacoustic emissions

Sarah Verhulst, James M. Harte, Torsten Dau
2008 Journal of the Acoustical Society of America  
with diffuse reflection boundaries are modeled with an energy-intensity boundary element method using uncorrelated broadband directional sources.  ...  Measurement of room-to-room airborne sound insulation with an access floor in a dwelling unit of condominium.  ...  We here advocate for non-fixed dictionaries, with a multi-layered hierarchical decomposition: the first layer roughly describes the signal, in an extremely redundant, signaltailored, structured dictionary  ... 
doi:10.1121/1.2935694 fatcat:z6yidzqqendznbmrczb3woaiv4
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