Selected Publications

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Book Chapters

F. Ahmad, P. Gerstoft, and W. Liu, "Multi-frequency and Wideband Sparse Array Processing," in M.G. Amin (Ed.), Sparse Arrays for Radar, Sonar, and Communications, IEEE Press/Wiley, 2024.  

A.C. Gurbuz and F. Ahmad, "Basic Principles of Machine Learning,” in S. Gurbuz (Ed.), Deep Neural Network Design for Radar Applications, IET Press, 2021.

F. Ahmad and P.P. Markopoulos, “L1-Norm Principal Component and Discriminant Analyses of Micro-Doppler Signatures for Indoor Human Activity Recognition,” in F. Fioranelli, H. Griffiths, M Ritchie, and A. Balleri (Eds.), Micro-Doppler Radar and its Applications, IET Press, 2020.

D. Tahmoush, F. Ahmad, A. Martone, G.E. Smith, and Z. Cammenga, “Range-Doppler Processing for Human Motion Detection and Classification,” in M. G. Amin (Ed.), Radar for Indoor Monitoring, CRC Press, 2018.

F. Ahmad and M.G. Amin, “Radar Imaging of Building Interiors,” in R. Klemm, U. Nickel, C. Gierull, P. Lombardo, H. Griffiths and W. Koch (Eds.), Novel Radar Techniques and Applications, Vol. 2, IET Press, 2017.

F. Ahmad, T. Dogaru, and M.G. Amin, “Ultrawideband Sense Through The Wall Radar Technology,” in J.D. Taylor (Ed.), Advanced Ultrawideband Radar: Targets, Signals and Applications, CRC Press, 2016. 

F. Ahmad, “Wall Clutter Mitigations for Compressive Imaging of Building Interiors,” in M. Amin (Ed.), Compressive Sensing for Urban Radar, CRC Press, 2015. 

M.G. Amin and F. Ahmad, “Through-the-Wall Radar Imaging: Theory and Applications,” in R. Chellappa and S. Theodoridis (Eds.), Academic Press Library in Signal Processing: Communications and Radar Signal Processing, Vol. 2, Elsevier, Oxford, 2013. 

F. Ahmad and R. Narayanan, “Conventional and Emerging Waveforms for Detection and Imaging of Targets behind Walls,” in M. Amin (Ed.), Through the Wall Radar Imaging, CRC Press, 2011. 

L. He, S.A. Kassam, F. Ahmad and M.G. Amin,“Sparse Multi-Frequency Waveform Design for Wideband Imaging,” in M. Wicks, E. Mokole, S. Blunt, R. Schneible and V. Amuso (Eds.), Principles of Waveform Diversity and Design, SciTech Publishing, 2010. 

JOURNAL ARTICLES

F. Ahmad and M.G. Amin, "DOA Estimation Via Coarray-Domain RELAX Algorithm With Source Number Estimation," IET Radar, Sonar & Navigation, vol. 18, no. 1, pp. 210-221, January 2024. 

Z. S. Adl and F. Ahmad, "Whitening-Aided Learning from Radar Micro-Doppler Signatures for Human Activity Recognition," Sensors, vol. 23, no. 17, Article ID: 7486, August 2023.

K. R. Mills, F. Ahmad, and E. Aboutanios, "Coarray-Domain Iterative Direction-of-Arrival Estimation With Coprime Arrays," Digital Signal Processing, vol. 122, Article ID 103332, pp. 1-12, April 2022.

A. Pambudi, F. Ahmad, and A. M. Zoubir, "Robust Copula-Based Detection of Shallow-Buried Landmines With Forward-Looking Radar,"  IEEE Transactions on Aerospace and Electronic Systems, vol. 58, no. 2, pp. 1187-1198, April 2022. 

Y. Li, B. Ouyang, T. Zhou, J. Thomas, S. Bavar, E. Weber, L. Michieletto, T.-C. Su, and  F. Ahmad, "Laboratory and Field Experimental Study of Underwater Inflatable Co-prime Sonar Array (UICSA)," Journal of Civil Engineering and Construction, vol. 11, no. 1, pp. 41-55, 2022.

D. Comite, F. Ahmad, M. G. Amin, and T. Dogaru, "Subsurface Target Imaging and Detection Using a Forward-Looking GPR: A Review," IEEE Geoscience and Remote Sensing Magazine, vol. 9, no. 4, pp. 173-190, December 2021. 

D.G. Chachlakis, T. Zhou, F. Ahmad, and P. Markopoulos, "Minimum Mean-Squared-Error Autocorrelation  Processing in Coprime Arrays," Digital Signal Processing, vol. 114, Article ID 103034, pp. 1-12, July 2021.

H. Chen, F. Ahmad, S. Vorobyov, and F. Porikli, "Tensor Decompositions in Wireless Communications and MIMO Radar," IEEE Journal on Selected Topics in Signal Processing, vol. 15, no. 3, pp. 438-453, April 2021.

A. Pambudi, M. Fauß, F. Ahmad, and A.M. Zoubir, “Minimax Robust Landmine Detection Using Forward-Looking Ground Penetrating Radar,” IEEE Transactions on Geoscience and Remote Sensing, vol. 58, no. 7, pp. 5032-5041, July 2020.

D. Comite, F. Ahmad, T. Dogaru, and M. G. Amin, “Coherence-Factor-Based Rough Surface Clutter Suppression for Forward-Looking GPR Imaging," Remote Sensing, vol. 12, no. 5, Article ID 857, 2020.

F. Ahmad, A. Hoorfar, and W. Zhang, “Performance Evaluation of Group Sparse Reconstruction and Total Variation Minimization for Target Imaging in Stratified Subsurface Media,” Electronics, vol. 8, no. 11, Article ID: 1245, October 2019.

P. Markopoulos, S. Zlotnikov, and F. Ahmad, “Adaptive Radar-Based Human Activity Recognition with L1-Norm Linear Discriminative Analysis,” IEEE Journal of Electromagnetics, RF and Microwaves in Medicine and Biology, vol. 3, no. 2, pp. 120-126, June 2019.

D. Comite, F. Ahmad, T. Dogaru, and M. G. Amin, “Adaptive Detection of Low-Signature Targets in Forward-Looking GPR Imagery," IEEE Geoscience and Remote Sensing Letters, vol. 15, no. 10, pp. 1520-1524, October 2018.

A. Golato, F. Ahmad, S. Santhanam, and M. G. Amin, “Multi-helical Path Exploitation in Sparsity-based Guided-wave Imaging of Defects in Pipes,"  Journal of  Nondestructive Evaluation, vol. 2018, Article ID 37:27, 2018.

A. Golato, F. Ahmad, S. Santhanam, and M. G. Amin, “Multipath Exploitation for Enhanced Defect Imaging Using Lamb Waves," NDT & E  International, vol. 92, pp. 1-9, 2017.

D. Comite, F. Ahmad, D. Liao, T. Dogaru, and M. G. Amin, “Multi-View Imaging for Low-Signature Target Detection in Rough-Surface Clutter Environment," IEEE Transactions on Geoscience and Remote Sensing, vol. 55, no. 9, pp. 5220-5229, 2017.

X. Wang, M. G. Amin, F. Ahmad, and E. Aboutanios, “Interference DOA Estimation and Suppression for GNSS receivers Using Fully Augmentable Arrays," IET Radar, Sonar, and Navigation, vol. 11, no. 3, pp. 474-480, 2017.

E. BouDaher, F. Ahmad, M. G. Amin, and A. Hoorfar, “Mutual Coupling Effect and Compensation in Non-Uniform Arrays for Direction-of-Arrival Estimation,” Digital Signal Processing, vol. 61, pp. 3-14, February 2017.

M. Stiefel, M. Leigsnering, A.M. Zoubir, F. Ahmad, and M. G. Amin, “Distributed Greedy Signal Recovery for Through-the-Wall Radar Imaging,” IEEE Geoscience and Remote Sensing Letters, vol. 13, no. 10, pp. 1477-1481, October 2016.

A. Hassanien, M. G. Amin, Y. D. Zhang, and F. Ahmad, "Phase-Modulation Based Dual-Function Radar-Communications," IET Radar, Sonar, and Navigation, vol. 31, no. 10, pp. 1411-1421, October 2016. 

A. Hassanien, M. G. Amin, Y. D. Zhang, and F. Ahmad, “Signaling Strategies for Dual-Function Radar-Communications: An Overview,” IEEE Aerospace and Electronic Systems Magazine, vol. 31, no. 10, October 2016.

A. Hassanien, M. G. Amin, Y. D. Zhang, and F. Ahmad, "Dual-Function Radar-Communications: Information Embedding Using Sidelobe Control and Waveform Diversity," IEEE Transactions on Signal Processing, vol. 64, no. 8, pp. 2168-2181, August 2016.

A. Golato. S. Santhanam, F. Ahmad, and M. G. Amin, "Multimodal Sparse Reconstruction in Guided Wave Imaging of Defects in Plates," Journal of Electronic Imaging, vol. 25, no. 4, pp. 043013-1-043013-10, July-August 2016.

M. G. Amin, X. Wang, Y. D. Zhang, F. Ahmad, and E. Aboutanios,“Sparse Arrays and Sampling for Interference Mitigation and DOA Estimation in GNSS,” Proceedings of the IEEE, Special Issue on Vulnerabilities, Threats, and Authentication in Satellite-based Navigation Systems, June 2016.  

M. Leigsnering, F. Ahmad, M. G. Amin, and A. M. Zoubir,“Parametric Dictionary Learning for Sparsity-Based TWRI in Multipath Environments,” IEEE Transactions on Aerospace and Electronic Systems, vol. 52, no. 2, pp. 532-547, April 2016.

M. G. Amin, Y. D. Zhang, F. Ahmad and K. C. Ho, “Radar Signal Processing for Elderly Fall Detection,” IEEE Signal Processing Magazine, vol. 33, no. 2, pp. 71-80, March 2016 . 

M. G. Amin, F. Ahmad, Y. D. Zhang, and B. Boashash,“Human Gait Recognition with Cane Assistive Device Using Quadratic Time-Frequency Distributions,” IET Radar, Sonar & Navigation, Special Issue on MicroDoppler, vol. 9, no. 9, pp. 1224-1230, December 2015. 

M. Leigsnering, F. Ahmad, M. G. Amin, and A. M. Zoubir,"Compressive Sensing Based Multipath Exploitation for Stationary and Moving Indoor Target Localization," IEEE Journal on Selected Topics in Signal Processing, vol. 9, no. 8, pp. 1469-1483, December 2015.

B. Jokanovic, M. G. Amin, Y. D. Zhang, and F. Ahmad, “Multi-Window Time-Frequency Signature Reconstruction from Undersampled Continuous Wave Radar Measurements for Fall Detection,” IET Radar, Sonar & Navigation, Special Issue on Application of Radar to Remote Patient Monitoring and Eldercare, vol. 9, no. 2, pp. 173–183, February . 

E. BouDaher, F. Ahmad, and M. G. Amin, “Sparse Reconstruction for Direction-of-Arrival Estimation using Multi-Frequency Co-Prime Arrays,” Eurasip Journal on Advances in Signal Processing, Special Issue on Sparse Sensing in Radar and Sonar Signal Processing, Article ID 2014:168, pp. 1–11, November 2014. 

F. Ahmad, M. G. Amin, and T. Dogaru, “Partially sparse imaging of stationary indoor scenes,” Eurasip Journal on Advances in Signal Processing, Special Issue on Sparse Sensing in Radar and Sonar Signal Processing, Article ID 2014:100, pp. 1–15, July 2014. 

M. Leigsnering, F. Ahmad, M. G. Amin, and A. M. Zoubir, “Multipath Exploitation in Through-the-Wall Radar Imaging using Sparse Reconstruction,” IEEE Transactions on Aerospace and Electronic Systems, vol. 50, no. 2, pp. 920-939, April 2014. 

M. G. Amin and F. Ahmad,“Compressive Sensing for Through-the-Wall Radar Imaging,” Journal of Electronic Imaging, vol. 22, no. 3, July 2013. 

E. Lagunas, M. G. Amin, F. Ahmad, and M. Najar,“Determining Building Interior Structures using Compressive Sensing,” Journal of Electronic Imaging, vol. 22, no. 2, April 2013. 

J. Qian, F. Ahmad, and M. G. Amin, “Joint Localization of Stationary and Moving Targets behind Walls using Sparse Scene Recovery,” Journal of Electronic Imaging, vol. 22, no. 2, April 2013. 

C. H. Seng, M. G. Amin, F. Ahmad, and A. Bouzerdoum,“Image Segmentations for Through-the-Wall Radar Target Detection,” IEEE Transactions on Aerospace and Electronic Systems, vol. 49, no. 3, July 2013. 

M. G. Amin and F. Ahmad,“Change Detection Analysis of Humans Moving Behind Walls,” IEEE Transactions on Aerospace and Electronic Systems, vol. 49, no. 1, January 2013. 

P. Setlur, G. E. Smith, F. Ahmad and M. G. Amin,“Target Localization with a Single Sensor via Multipath Exploitation,” IEEE Transactions on Aerospace and Electronic Systems, vol. 48, no. 3, July 2012. 

P. Setlur, F. Ahmad and M. G. Amin, “Multipath Model and Exploitation in Through-the-Wall and Urban Radar Sensing,” IEEE Transactions on Geoscience and Remote Sensing, vol. 49, no. 10, pp. 4021-4034, 2011. 

P. Setlur, F. Ahmad, M. G. Amin, “Maximum Likelihood and Suboptimal Schemes for Motion Parameter Estimation using Carrier Diverse Doppler Radars,” IET Signal Processing vol. 5, no. 2, pp. 194-208, April 2011.

F. Ahmad and M. G. Amin, “Matched-Illumination Waveform Design for a Multistatic Through-the-Wall Radar System,” Journal of Selected Topics in Signal Processing, vol. 4, no. 1, Feb 2010. 

P. Setlur, F. Ahmad and M. G. Amin, “Dual Frequency Doppler Radars for Indoor Range Estimation: Cramér-Rao Bound Analysis,” IET Signal Processing, vol. 4, no. 3, pp. 256-271, 2010.

Y. Yoon, M. G. Amin, and F. Ahmad, “MVDR Beamforming for Imaging Robustness of Targets Behind Unknown Walls,” IEEE Transactions on Aerospace and Electronic Systems vol. 47, no. 1, pp. 347-366, Jan. 2011.

F. Ahmad, M. G. Amin, and P. D. Zemany, “Dual-Frequency Radars for Target Localization in Urban Sensing,” IEEE Transactions on Aerospace and Electronic Systems, vol. 45, no. 4, Oct. 2009. 

Y. Zhang, M. G. Amin, and F. Ahmad, “Time-Frequency Analysis for the Localization of Multiple Moving Targets Using Dual-Frequency Radars,” vol. 15, pp. 777-780, 2008. 

F. Ahmad and M. G. Amin, “Multi-Location Wideband Synthetic aperture imaging for urban sensing applications,” Journal of the Franklin Institute, vol. 345, no. 6, Sept. 2008. 

F. Ahmad, Y. Zhang, and M. G. Amin, “Three-dimensional wideband beamforming for imaging through a single wall,” IEEE Geoscience and Remote Sensing Letters, vol. 5, no. 2, April 2008. 

F. Ahmad, M. G. Amin, and G. Mandapati,“Autofocusing of Through-the-Wall Radar Imagery under Unknown Wall Characteristics,” IEEE Transactions on Image Processing, vol. 16, no. 7, 2007. 

F. Ahmad and M. G. Amin, “Noncoherent Approach to Through-the-Wall Radar Localization,” IEEE Transactions on Aerospace and Electronic Systems, vol. 42, no. 4, Oct. 2006. 

F. Ahmad, M. G. Amin, and S. A. Kassam, “Synthetic Aperture Beamformer for imaging through a dielectric wall,” IEEE Transactions on Aerospace and Electronic Systems, vol. 41, no. 1, pp. 271-283, Jan. 2005. 

F. Ahmad, G. J. Frazer, S. A. Kassam, and M. G. Amin, “Design and implementation of near-field, wideband synthetic aperture beamformers,” IEEE Transactions on Aerospace and Electronic Systems, vol. 40, no. 1, pp. 206-220, Jan. 2004. 

F. Ahmad and S. A. Kassam, “Coarray analysis of the wide-band point spread function for active array imaging,” Signal Processing, vol. 81, no. 1, pp. 99-115, Jan. 2001. 

Conference Papers

Z. Sadeghi Adl and F. Ahmad, "Semi-supervised Convolutional Autoencoder With Attention Mechanism for Activity Recognition," Proc. European Signal Processing Conference, Helsinki, Finland, September 2023.

S.A. Hamza, K. Juretus, M.G. Amin, and F. Ahmad, "Deep Learning Sparse Array Design Considering Binary Switching and Missing Coarray Lags," Proc. International Symposium on Signals, Circuits, and Systems, Iasi, Romania, July 2023.

S.A. Hamza, K. Juretus, M.G. Amin, and F. Ahmad, "Deep Learning Sparse Array Design Using Binary Switching Configurations," Proc. International Conference on Acoustics, Speech, and Signal Processing, Rhodes Island, Greece, June 2023.

S.A. Hamza, K. Juretus, M.G. Amin, and F. Ahmad, "Deep Learning Sparse Array Design For Fast Antenna Switching in Dynamic Environments," Proc. URSI International Symposium on Electromagnetic Theory, Vancouver, BC, Canada, May 2023.

Z. Sadeghi Adl and F. Ahmad, "Radar-based Whitening-aided  Human Activity Recognition," Proc. IEEE Radar Conference, San Antonio, TX, May 2023.

F. Ahmad and M. G. Amin, "Coarray-domain RELAX Algorithm With Source Number Estimation for Direction Finding," Proc. International Conference on Radar Systems, Edinburgh, UK, October 2022.

C. Campbell and F. Ahmad, "Semi-supervised Attention-Augmented Convolutional Autoencoder for Radar-Based Human Activity Recognition," Proc. SPIE Radar Sensor Technology XXVI, Orlando, FL, April 2022.

C. Campbell and F. Ahmad, "Convolutional Denoising of Underwater Laser Line Scan Images via Transfer Learning," Proc. SPIE Big Data IV: Learning, Analytics, and Applications, Orlando, FL, April 2022.

F. Ahmad, P. Pal, and T. Zhou, "Reliable DOA Estimation in Spatially Correlated Noise With Nonuniform Arrays," Proc. Asilomar Conference on Signals, Systems, and Computers, Pacific Grove, CA, November 2021.

A.D. Pambudi, F. Ahmad, and A.M. Zoubir, "A Robust Copula Model for Radar-based Landmine Detection," Proc. IEEE International Conference on Acoustics, Speech, and Signal Processing, Toronto, Canada, June 2021.

C. A. Schaff, Y. Li, B. Ouyang, C. D. Ouden, T. Zhou, and, F. Ahmad, “Development of a Low-cost Subsea Satalogger for Passive Sonar Arrays,” Proc. SPIE Big Data III Conference, Orlando, FL, April 2021. 

A. D. Pambudi, F. Ahmad, and A. M. Zoubir, “Copula-Based Robust Landmine Detection in Multi-View Forward-Looking GPR Imagery,” Proc. IEEE Radar Conference, Florence, Italy, September 2020.

A. D. Pambudi, M. Golz, F. Ahmad, and A. M. Zoubir, “A Spatial Inference Approach for Landmine Detection Using Forward-Looking GPR,” Proc. IEEE Radar Conference, Florence, Italy, September 2020.

Li, J. Thomas, B. Ouyang, T.-C. Su, and F. Ahmad, “Numerical Study of Underwater Inflatable Co-prime Sonar Array (UICSA),” Proc. ASME 39th International Conference on Ocean, Offshore, and Arctic Engineering, Fort Lauderdale, FL, June/July 2020.

C. Campbell and F. Ahmad, “Attention-augmented Convolutional Autoencoders for Enhanced Human Activity Classification Using Micro-doppler Signatures,” Proc. IEEE International Radar Conference, Washington D.C., April 2020.

K. Mills, E. Aboutanios, and F. Ahmad, “Iterative Interpolated Beamforming for Exploiting Full Degrees-of-Freedom in DOA Estimation with Co-prime Arrays,” Proc. IEEE International Workshop on Computational Advances in Multi-sensor Adaptive Processing, Guadeloupe, West Indies, December 2019.

T. Zhou and F. Ahmad, “DOA Estimation in the Presence of Local Scattering and Correlated Noise Using Co-prime Arrays,” Proc. IEEE Underwater Acoustic Signal Processing Workshop, West Greenwich, RI, October 2019.

Y. Li, B. Ouyang, T.-C. Su, T. Zhou, and F. Ahmad, “Design and Experimental Study of Underwater Inflatable Co-prime Sonar Array (UICSA),” Proc. OCEANS Conference & Exposition, Seattle, WA, October 2019.

A. D. Pambudi, M. Fauß, F. Ahmad, and A. M. Zoubir, “Forward Looking GPR-Based Landmine Detection Using a Robust Likelihood Ratio Test,” Proc. 27th European Signal Processing Conference, A Coruna, Spain, September 2019. 

S. Zlotnikov, P. Markopolous, and F. Ahmad, "Incremental L1-Norm Linear Discriminant Analysis for Indoor Human Activity Classification,"  Proc. IEEE Radar Conference, Boston, MA, April 2019.

K. Mills, F. Ahmad, M. G. Amin, and B. Himed, "Fast Iterative Interpolated Beamforming for Interference DOA Estimation in GNSS Receivers Using Fully Augmentable Arrays,"  Proc. IEEE Radar Conference, Boston, MA, April 2019.

B. Ouyang, Y. Li, and F. Ahmad, "Optical Sensing System for Human Activity Recognition,"  Proc. SPIE Big Data Conference, Baltimore, MD, April 2019. 

T. Zhou, F. Ahmad, Y. Li, and B. Ouyang, "Near-field Source Localization With an Underwater Inflatable Sonar Co-prime Array,"  Proc. SPIE Big Data Conference, Baltimore, MD, April 2019. 

W. Purcell, S. Islam, S. Rhee, A. Nguyen, S.H. Song, A. Kim, and F. Ahmad, "Wideband Ultrasonic Transducer Using Modified Space-Filling Curves,"  Proc. International Conference on Micro Electro Mechanical Systems, Seoul, South Korea, January 2019. 

A.D. Pambudi, M. Fauß, F. Ahmad, and A. M. Zoubir, "Robust Detection for Forward-Looking GPR in Rough-Surface Clutter Environments,"  Proc. Asilomar Conference on Signals, Systems, and Computers, Pacific Grove, CA, October 2018. 

F. Ahmad, W. Zhang, and A. Hoorfar, "A Comparative Study of L1-Minimization, Total Variation Minimization, and Group Sparse Reconstruction in Imaging of GPR Targets Under Noise,"  Proc.  IEEE International Symposium on Antennas and Propagation and USNC-URSI Radio Science Meeting, Boston, MA, 2018. 

P. P. Markopoulos and F. Ahmad, "Robust Radar-Based Human Motion Recognition with L1-Norm Linear Discriminant Analysis,"  Proc.  IEEE MTT-S International Microwave Biomedical Conference, Philadelphia, PA, 2018.

D. Chachlakis, P. P. Markopoulos, and F. Ahmad, "MMSE-Based Autocorrelation Sampling for Coprime Arrays,"  Proc.  IEEE International Conference on Acoustics, Speech, and Signal Processing, Calgary, Canada, 2018.

B. Ouyang, Y. Li, T. Zhou, T.-C. Su, F. Dalgleish, A. Dalgleish, and F. Ahmad, "Compressive Two-ways: The Initial Study of an Underwater Inflatable Co-prime Sonar Array (UICSA),"  Proc. SPIE Compressive Sensing VII Conference, Orlando, FL, 2018.

S. Zlotnikov, P. Somaru, P. P. Markopoulos, and F. Ahmad, "A Linear Discriminative Analysis Based Fall Motion Detector Using Radar,"  Proc. SPIE Compressive Sensing VII Conference, Orlando, FL, 2018.

F. Ahmad, W. Zhang, and A. Hoorfar, "Performance Comparison of Total Variation Minimization and Group Sparse Reconstructions for Extended Target Imaging in Multilayered Dielectric Media," Proc. SPIE Compressive Sensing VII Conference, Orlando, FL, 2018.

D. Comite, F. Ahmad, and T. Dogaru, "Performance of Free-Space Tomographis Imaging Approximation for Shallow-Buried Target Detection,"  Proc. IEEE International Workshop on Computational Advances in Multi-sensor Adaptive Processing, Curacao, Dutch Antilles, 2017.

D. Chachlakis, P. P. Markopoulos, and F. Ahmad, "The Mean-Squared-Error of Autocorrelation Sampling in Coprime Arrays,"  Proc. IEEE International Workshop on Computational Advances in Multi-sensor Adaptive Processing, Curacao, Dutch Antilles, 2017.

A. Golato, S. Santhanam, F. Ahmad, and M. G. Amin, "Extended Defect Localization in Sparsity-Based Guided-Wave Structural Health Monitoring," Proc. IEEE International Workshop on Computational Advances in Multi-sensor Adaptive Processing, Curacao, Dutch Antilles, 2017.

H. Raja, W. U. Bajwa, and F. Ahmad, "Through-the-Wall Radar Imaging Using a Distributed Quasi-Newton Method,"  Proc. Asilomar Conference on Signals, Systems, and Computers, Pacific Grove, CA, 2017.

D. Comite, F. Ahmad, T. Dogaru and M. G. Amin, "Dual-Polarization Coherence Factor for Clutter Reduction in Forward-Looking Ground Penetrating Radar Imaging," Proc. URSI General Assembly and Scientific Symposium, Montreal, Canada, 2017. 

F. Ahmad, "Sparsity-Based Motion Detection Using Distributed Radar Systems," Proc. URSI General Assembly and Scientific Symposium, Montreal, Canada, 2017. 

P. P. Markopoulos and F. Ahmad, "Indoor Human Motion Classification by L1-Norm Subspaces of Micro-Doppler Signatures," Proc. IEEE Radar Conference, Seattle, WA, 2017.  

D. Comite, F. Ahmad, T. Dogaru and M. G. Amin, "Coherence Factor for Rough Surface Clutter Mitigation in Forward-Looking GPR," Proc. IEEE Radar Conference, Seattle, WA, 2017.  

A. Golato, F. Ahmad, S. Santhanam, and M. G. Amin, "Defect Classification in Sparsity-Based Structural Health Monitoring," Proc. SPIE Compressive Sensing VI Conference, Anaheim, CA, 2017. 

E. BouDaher, F. Ahmad, and M. G. Amin, "Performance Analysis of Sparsity-Based Interpolation for DOA Estimation With Non-uniform Arrays," Proc. SPIE Compressive Sensing VI Conference, Anaheim, CA, 2017. 

B. Erol, M. G. Amin, F. Ahmad, and Y. D. Zhang, "Wideband Radar Based Fall Motion detection for a Generic Elderly," Proc. Asilomar Conference on Signals, Systems, and Computers, Pacific Grove, CA, 2016.

E. BouDaher, F. Ahmad, and M. G. Amin, “Sparsity-Based Extrapolation for Direction-of-Arrival Estimation Using Co-Prime Arrays,” Proc. SPIE  Compressive Sensing V Conference, vol. 9857, Baltimore, MD, 2016.  

B. Jokanovic, M. G. Amin, and F. Ahmad, "Effect of Data Representations on Deep Learning in Fall Detection," Proc. IEEE Sensor Array and Multichannel Signal Processing Workshop, Rio de Janeiro, Brazil, 2016.

E. BouDaher, F. Ahmad, M. G. Amin, and A. Hoorfar, "Effect of Mutual Coupling on Direction-of-Arrival Estimation Using Sparse Dipole Arrays," Proc. IEEE International Symposium on Antennas and Propagation/USNC-URSI National Radio Science Meeting, Fajardo, Puerto Rico, 2016.

B. Jokanovic, M. G. Amin, and F. Ahmad, "Radar Fall detectors Using Deep Learning," Proc. IEEE Radar Conference, Philadelphia, PA, 2016.

H. Raja, W. U. Bajwa, F. Ahmad, and M. G. Amin, "Parametric Dictionary Learning for TWRI Using Distributed Particle Swarm Optimization," Proc. IEEE Radar Conference, Philadelphia, PA, 2016.

A. Hassanien, M. G. Amin, Y. D. Zhang, F. Ahmad, B. Himed, "Non-Coherent PSK-Based Dual-Function Radar-Communications Systems," Proc. IEEE Radar Conference, Philadelphia, PA, 2016.

D. Comite, F. Ahmad, M. G. Amin, and T. Dogaru, "Multi-Aperture Processing for Improved Target Detection in Forward-Looking GPR Applications," Proc. European Conference on Antennas and Propagation, Davos, Switzerland, 2016.

A. Golato, S. Santhanam, F. Ahmad, and M. G. Amin, “Sparsity Based Defect Imaging in Pipes using Guided Waves,” Proc. SPIE Compressive Sensing V Conference, vol. 9857, Baltimore, MD, 2016. 

B. Erol, M. G. Amin, F. Ahmad, and B. Boashash, “Radar Fall Detectors: A Comparison,” Proc. SPIE Radar Sensor Technology XX Conference, vol. 9829, Baltimore, MD, 2016.   

B. Jokanovic, M. G. Amin, F. Ahmad, and B. Boashash, “Radar Fall Detection Using Principle Component Analysis,” Proc. SPIE Radar Sensor Technology XX Conference, vol. 9829, Baltimore, MD, 2016.  

E. BouDaher, F. Ahmad, M. G. Amin, and A. Hoorfar, “Effect of Mutual Coupling on Direction-of-Arrival Estimation Using Sparse Dipole Arrays,” Proc. International Symposium on Antennas and Propagation/USNC-URSI National Radio Science meeting, Fajardo, Puerto Rico, 2016.    

H. Raja, W. U. Bajwa, F. Ahmad, and M. G. Amin“Parametric Dictionary Learning for TWRI Using Distributed Particle Swarm Optimization,” Proc. IEEE Radar Conference, Philadelphia, PA, 2016.  

B. Jokanovic, M. G. Amin, and F. Ahmad,“Radar Fall Detectors Using Deep Learning,” Proc. IEEE Radar Conference, Philadelphia, PA, 2016.  

A. Hassanien, M. G. Amin, Y. D. Zhang, F. Ahmad, and B. Himed,“Non-Coherent PSK-Based Dual-Function Radar-Communication Systems,” Proc. IEEE Radar Conference, Philadelphia, PA, 2016.  

D. Comite, F. Ahmad, M. G. Amin, and T. Dogaru, “Multi-Aperture Processing for Improved Target Detection in Forward-Looking GPR Applications,” Proc. European Conference on Antennas and Propagation, Davos, Switzerland, 2016.  

A. H. Muqaibel, M. Amin, and F. Ahmad,“Directional Multipath Exploitation for Urban Target Localization with a Single-Antenna,” Proc. International Radar Conference, Lille, France, 2014.  

M. Amin, F. Ahmad, and A. Hoorfar,“Squinted Array Beamforming for Wall Back Plate Detection,” Proc. International Radar Conference, Lille, France, 2014.  

M. Amin, X. Wang, F. Ahmad, and E. Aboutanios,“Minimum output power anti-jam with fully augmentable arrays in GNSS,” Proc. IEEE Benjamin Franklin Symposium on Microwave and Antenna Sub-systems for Radar, Telecommunications, and Biomedical Applications, Philadelphia, PA, 2014.  

X. Wang, M. Amin, F. Ahmad, and E. Aboutanios,“Coarray Based Optimum Geometries for DOA Estimation with Multiple CRPA GPS Arrays,” Proc. ION GNSS+, Tampa, FL, 2014. 

E. BouDaher, Y. Jia, F. Ahmad, and M. G. Amin,“Direction-of-arrival estimation using multi-frequency co-prime arrays,” Proc. European Signal Processing Conference, Lisbon, Portugal, 2014. 

B. Jokanovic, M. G. Amin, Y. D. Zhang,and F. Ahmad,“Time-frequency kernel design for sparse joint-variable signal representations,” Proc. European Signal Processing Conference, Lisbon, Portugal, 2014. 

V. Kilaru, M. Amin, F. Ahmad, P. Sevigny, and D. DiFilippo,“Gaussian Mixture Model Based Features for Stationary Human Identification in Urban Radar Imagery,” IEEE Radar Conference, Cincinnati, OH, May 19-23, 2014.

A. Golato, S. Santhanam, F. Ahmad, and M. Amin,“Multimodal sparse reconstruction in Lamb wave based structural health monitoring,” SPIE Defense, Sensing, and Security Symposium, Compressive Sensing III Conference, Baltimore, MD, May 5-9, 2014.  

F. Ahmad, K. Al Kadry, and M. Amin,“Sparsity-based ranging for dual frequency radars,” SPIE Defense, Sensing, and Security Symposium, Compressive Sensing III Conference, Baltimore, MD, May 5-9, 2014.

A. Chaddad, F. Ahmad, M. G. Amin, P. Sevigny, and D. DiFilippo,“Textural feature selection for enhanced detection of stationary humans in through-the-wall radar imagery,” SPIE Defense, Sensing, and Security Symposium, Radar Sensor Technology XVIII Conference, Baltimore, MD, May 5-9, 2014.

Y. Yu, F. Ahmad, A. P. Petropulu, and M. Amin,“CS-MIMO Radars for through-the-wall imaging in an indoor multipath environment,” SPIE Defense, Sensing, and Security Symposium, Compressive Sensing III Conference, Baltimore, MD, May 5-9, 2014.

M. Leigsnering, F. Ahmad, M. G. Amin, and A. M. Zoubir, “CS Based Specular Multipath Exploitation in TWRI under Wall Position Uncertainties,” Eighth IEEE Workshop on Sensor Array and Multi-Channel Signal Processing, A Coruna, Spain, June 2014.

E. L. Targarona, M. Amin, F. Ahmad, and M. Najar, “Improved interior wall detection using designated dictionaries in compressive urban sensing problems,” SPIE Defense, Sensing, and Security Symposium, Compressive Sensing II Conference, Baltimore, MD, April 29-May 3, 2013.

A. Sengur, M. Amin, F. Ahmad, P. Sevigny, and D. DiFilippo, “Textural Feature Based Target Detection in Through-the-Wall Radar Imagery,” SPIE Defense, Sensing and Security Sumposium, Radar Sensor Technology XVII Conference, Baltimore, MD, April 29-May 3, 2013.

E. L. Targarona, M. Amin, F. Ahmad, and M. Najar, “Sparsity-based radar imaging of building structures,” 20th European Signal Processing Conference, Bucharest, Romania, August 27-31, 2012.

F. Ahmad and M. G. Amin, “Wall clutter mitigation for MIMO radar configurations in urban sensing,” 11th International Conference on Information Science,Signal Processing, and their Applications, Montreal, Canada, July 2012.

E. L. Targarona, M. Amin, F. Ahmad, and M. Najar, “Compressive sensing for through wall radar imaging of stationary scenes using arbitrary data measurements,” 11th International Conference on Information Science, Signal Processing, and their Applications, Montreal, Canada, July 2012.

F. Ahmad and M.G. Amin, “Sparsity-based change detection of short human motion for urban sensing,” Seventh IEEE Workshop on Sensor Array and Multi-Channel Signal Processing, Hoboken, NJ, June 2012.

E. L. Targarona, M. Amin, F. Ahmad, and M. Najar,“Wall mitigation techniques for indoor sensing within the CS framework,” Seventh IEEE Workshop on Sensor Array and Multi-Channel Signal Processing, Hoboken, NJ, June 2012.

C.H. Seng, M. Amin, F. Ahmad, and A. Bouzerdoum,“Segmentations of Through-the-wall Radar Images,” Seventh IEEE Radar Conference, Atlanta, GA, May 2012.

F. Ahmad and M.G. Amin,“Partially Sparse Reconstruction of Behind-the-Wall Scenes,” SPIE Symposium on Defense, Security, and Sensing, Compressive Sensing Conference, Baltimore, MD, April 2012.

F. Ahmad, M.G. Amin and J. Qian, “Through-the-Wall Moving Target Detection and Localization using Sparse Regularization,” SPIE Symposium on Defense, Security, and Sensing, Compressive Sensing Conference, Baltimore, MD, April 2012.

M.G. Amin, P. Setlur, F. Ahmad, P. Sevigny, D. DiFilippo, “Histogram Based Segmentation for Stationary Indoor Target Detection,” SPIE Symposium on Defense, Security, and Sensing, Radar Sensor Technology XVI Conference, Baltimore, MD, April 2012.

G.E. Smith, F. Ahmad, and M.G. Amin, “Micro-Doppler Processing for High-Resolution Radar,” SPIE Symposium on Defense, Security, and Sensing, Radar Sensor Technology XVI Conference, Baltimore, MD, April 2012.