A Decade+ of Breast Microwave Imaging (BMI): Lessons Learned and Future Directions

Room: ENGMC603, Bldg: McConnell Engineering Building, 3480 Rue University, Montreal, Quebec, Canada

Microwave breast imaging is a promising frontier in breast cancer detection. This presentation summarizes over a decade of diverse studies, from early beginnings to a prototype portable device for underserved communities. We've developed a Health-Canada-approved device using 24 small vector network analyzers. Ongoing efforts focus on a low-cost multistatic device. Disparities in breast cancer detection for marginalized populations highlight the need for the system's low-cost, portable, and user-friendly solutions. A critical review emphasizes the need to improve specificity for BMI. High-contrast image reconstruction methods sometimes overshadow accuracy, a key area for investigation. The presentation focuses on radar-based reconstruction algorithms, addressing various challenges. It introduces a differential dual-breast diagnostic strategy for more accurate estimates. In conclusion, a decade of research underscores ongoing learning and integration for advancements, crucial for impacting early breast cancer detection in remote locations and low-middle income countries. Room: ENGMC603, Bldg: McConnell Engineering Building, 3480 Rue University, Montreal, Quebec, Canada

Open challenges in TT&C: The control of mega-constellations and IoT for Earth Observation

Virtual: https://events.vtools.ieee.org/m/379150

The TT&C is a critical function that ensures the spacecraft system operates properly, by sending Telecommand, receiving Telemetry, and doing tracking for the orbit determination. Although the TT&C engineering for LEO satellites is well consolidated, when it comes to the design of TT&C subsystems for low-latency and large networks there are several open research directions. This seminar will provide an overview of the main challenges that are faced when designing the TT&C for such kind of networks, taking as main reference Mega-constellations and IoT for the Earth Observation. The level of technical details will be provided in a style to help attendance to get familiar with the topic, thus making the seminar accessible also to engineers outside the specialty of TT&C. Speaker(s): Dr. Andrea Modenini, Dr. Gunes Karabulut Kurt Virtual: https://events.vtools.ieee.org/m/379150

Challenging Complexity with Advanced Systems Engineering Technologies

Room: EV002.309, Bldg: EV Building, Concordia University , Montreal, Quebec, Canada, H3G 1M8

The Montreal Chapters of the IEEE Control Systems (CS) and Systems, Man & Cybernetics (SMC) cordially invite you to attend the following in-person talk, to be given by Dr. Haifeng Zhu, Aerospace Systems Expert at Boeing. Co-sponsored by: Concordia University Speaker(s): Dr. Haifeng Zhu Room: EV002.309, Bldg: EV Building, Concordia University , Montreal, Quebec, Canada, H3G 1M8

L’automatisation pour la production et l’assemblage de très haute précision

Virtual: https://events.vtools.ieee.org/m/387114

Quelques soient les produits développés en optique-photonique, la production et l’assemblage de très haute précision sont un défi pour le recrutement et la rétention de la main-d’œuvre, pour la qualité et pour la productivité. Déjà active dans le développement et l’automatisation des opérations les plus précises et délicates, Solutions Novika désire vous entendre sur vos besoins. Co-sponsored by: Optonique. Speaker(s): Patrick Martel, Virtual: https://events.vtools.ieee.org/m/387114

THz Science and Technology Seminar (TSTS) Series: Near-field Terahertz Networking

Virtual: https://events.vtools.ieee.org/m/386141

In collaboration with the Poly-Grames Research Center, IEEE Student Branch of Polytechnique and INRS, STARaCom, and Academy of Science of the Royal Society of Canada, the IEEE Montreal Section and MTT Montreal IEEE Chapter are organizing THz Science and Technology Seminar (TSTS) Series, which will be delivered exclusively online by distinguished THz researchers, engineers, and leaders in the world to present state-of-the-art THz R&D progress, education, and applications. This TSTS series is made possible thanks to the sponsorship and conclusion of the NSERC-Huawei Industrial Research Chair Program. Near-field Terahertz Networking Abstract: The recent dramatic growth in interest in the use of high-frequency (millimeter-wave and terahertz) carrier waves for wireless communications has spurred a great deal of research activity. In some cases, such as fixed point-to-point backhaul, systems operating above 100 GHz are already in or nearing commercial deployment. On the other hand, significant research challenges remain for the deployment of local area networks, which must manage factors such as user mobility and line-of-sight blockage of directional beams. Interestingly, such networks may often be able to operate in a regime in which most or all of the broadcast sector is located in the near field of the transmitter. This possibility opens up a host of new ideas for wave front engineering, in particular wave fronts that can only exist in the electromagnetic near field. Here, we discuss a few examples, focusing on the class of wave fronts that can be engineered to curve around an intervening obstacle, delivering data to a user located in the shadow of the obstacle. This near-field effect presents an intriguing alternative to the popular notion of intelligent reflecting surfaces for blockage mitigation. Co-sponsored by: PolyGrames, STARaCom, Academy of Science of the Royal Society of Canada Speaker(s): , Professor Daniel Mittleman Virtual: https://events.vtools.ieee.org/m/386141

Seeing Through Walls: An Electromagnetic Perspective (for general audience)

Bldg: Pavillon Principal, B 600.16, la Galerie Rolland, 2500 Chem. de Polytechnique, Montréal, Quebec, Canada, H3T 1J4

The ability of electromagnetic waves to penetrate through various building materials, together with advances in design of ultra-wideband compact radar modules, has made see-thru-wall technology, also known as Through-the-wall radar imaging (TWRI), of increasing importance in a wide range of both civilian and defense applications. In this lecture, an overview of various TWRI technologies, including the latest research in several areas important in the design of TWRI systems, will be presented. Electromagnetic-based techniques for wall parameter estimation to mitigate the adverse wall effects and enhance the efficient imaging and classification of targets within and/or behind walls will be discussed. For efficient imaging, details of fast polarimetric and tomographic based imaging algorithms for both 2D and 3D scenarios will be given, and imaging results for various realistic scenarios using both numerical simulations and laboratory measurements will be presented, Development of wideband and ultrawideband antenna arrays, which are essential in successful implementation of see-thru-wall technology, together with hardware descriptions of two constructed portable systems will conclude the presentation. Throughout, I will include a personal perspective from my own two-decade journey in this interdisciplinary research area. Speaker(s): Prof. Ahmad Hoorfar, Bldg: Pavillon Principal, B 600.16, la Galerie Rolland, 2500 Chem. de Polytechnique, Montréal, Quebec, Canada, H3T 1J4

Real Time and Sparse Reconstructed Radar Imaging Through Stratified Media

Bldg: Pavillon Principal, B 600.16, la Galerie Rolland, 2500 Chem. de Polytechnique, Montréal, Quebec, Canada, H3T 1J4

The problem of imaging of objects within or through multilayered dielectric media appears in many areas, including those in ground-penetrating radar (GPR) imaging, through-the-wall radar imaging (TWRI), intra-wall and subsurface imaging, and medical imaging. These general areas cover many important defense and civilian applications such as those in counterterrorism and law enforcement operations, firefighting, earthquake rescue missions, detection of buried subsurface objects and minerals in GPR, millimeter wave imaging of concealed weapons and contraband carried by personnel, to name a few. In many situations, however, the dielectric media induce shadowing effects on targets, resulting in image degradation and errors in geo-locating or, possibly, complete masking of targets. Furthermore, in most practical situations the imaging of targets should be done in real-time, requiring the development of fast data acquisition schemes as well as highly efficient microwave imaging techniques that can fully account for wave propagation through various dielectric layers or walls. In this lecture, a comprehensive overview of various image reconstruction techniques for objects in stratified media will be given for both SAR-based and multiple-input multiple-output (MIMO) based systems, and for both real-time imaging and sparsity-based imaging scenarios. For the former, we will describe the use of efficient 2D and 3D Diffraction Tomography (DT) techniques which use first order Born approximation together with successive implementations of spatial fast-Fourier transform (FFT) and inverse-FFT (IFFT), to arrive at high-resolution images. Such fast-imaging techniques, however, do not address the problem posed by long data acquisition time associated with most microwave-imaging scenarios. To address this problem, assuming a sparse target space, one can resort to the use of Compressive Sensing (CS) to significantly reduce the number of antennas and/or collected frequency points. In our implementation of CS, the wall or multilayered media effects are accurately and efficiently accounted for in the sparse-image reconstruction through the use of approximate expressions for the Green’s functions of multi-layered lossy dielectric medium. In particular, the use of total variation minimization (TVM) and its advantages over the l1-norm minimization, which is often used in the standard radar implementation of CS, will be detailed. Numerical and experimental results for DT-based and CS-based radar imaging in various GPR and TWRI scenarios will be given in the presentation. Speaker(s): Prof. Ahmad Hoorfar, Bldg: Pavillon Principal, B 600.16, la Galerie Rolland, 2500 Chem. de Polytechnique, Montréal, Quebec, Canada, H3T 1J4

InAs/InP Quantum-Dash Mode-Locked Laser For Duplex Radio Over Fiber Links

Virtual: https://events.vtools.ieee.org/m/388262

An InAs/InP quantum-dash mode-locked laser (QD-MLL) with phase-locked comb lines is an excellent optical source and a microwave source for, respectively, optical and wireless transmission. In this talk, a duplex radio over fiber (RoF) link using a QD-MLL for RoF transmission is reported. A few implementation issues including phase noise impairment, MIMO transmission, and photonic integrated implementation will be discussed. RoF links with integrated sensing and communication (ISAC) functions for next generation wireless communications (6G) applications will also be discussed. Laser à verrouillage de mode InAs/InP tirets quantiques (Quantum-Dash) pour radio duplex sur liaisons fibre optique Un laser à verrouillage de mode quantique InAs/InP (QD-MLL) avec des lignes de peigne à verrouillage de phase est une excellente source optique et une source micro-ondes pour, respectivement, la transmission optique et sans fil. Dans cet exposé, une liaison radio duplex sur fibre (RoF) utilisant un QD-MLL pour la transmission RoF est rapportée. Quelques problèmes de mise en œuvre, notamment la dégradation du bruit de phase, la transmission MIMO et la mise en œuvre photonique intégrée, seront abordés. Les liens RoF avec des fonctions intégrées de détection et de communication (ISAC) pour les applications de communications sans fil (6G) de nouvelle génération seront également abordés. Co-sponsored by: National Research Council, Canada. Optonique. Speaker(s): Prof. Jianping Yao (University of Ottawa), Virtual: https://events.vtools.ieee.org/m/388262