BEGIN:VCALENDAR VERSION:2.0 PRODID:IEEE vTools.Events//EN CALSCALE:GREGORIAN BEGIN:VTIMEZONE TZID:America/Los_Angeles BEGIN:DAYLIGHT DTSTART:20200308T030000 TZOFFSETFROM:-0800 TZOFFSETTO:-0700 RRULE:FREQ=YEARLY;BYDAY=2SU;BYMONTH=3 TZNAME:PDT END:DAYLIGHT BEGIN:STANDARD DTSTART:20191103T010000 TZOFFSETFROM:-0700 TZOFFSETTO:-0800 RRULE:FREQ=YEARLY;BYDAY=1SU;BYMONTH=11 TZNAME:PST END:STANDARD END:VTIMEZONE BEGIN:VEVENT DTSTAMP:20191218T222941Z UID:414BD469-14EE-49C4-A636-963D220A2418 DTSTART;TZID=America/Los_Angeles:20191206T100000 DTEND;TZID=America/Los_Angeles:20191206T113000 DESCRIPTION:Most of the airport passenger security systems use millimeter-w ave radar portals to detect threats concealed under clothing. These sophis ticated sensors employ advanced RF radar modules and GPU-based accelerated processing. While they are very sensitive\, alerting on even small anomal ies\, they are prone to false alarms\, which lead to invasive pat-downs.\n \nNew research in multistatic focusing radar systems has the potential to improve detection and lower false alarms. Improvements in the antenna syst em and in the inversion algorithms help rule out innocent objects while ma king the detection of non-shape-specific anomalies more likely\, without i ncreasing the processing time.\n\nA proposed toroidal reflector antenna\, consisting of a tilted ellipse rotated about the vertical axis\, provides for multiple\, overlapping high-resolution nearfield beams that form multi -view\, true multistatic mm-wave imaging for security applications. Modele d results indicate the point spread function (PSF) on a torso target is wi de and short\, allowing for quickly computed 2D images which can be stacke d to reconstruct detailed 3D surfaces. The elliptical curvature in the ver tical plane focuses beams to narrow horizontal slices on the object to be imaged. With only this slice illuminated\, the scattered field will be due to just this narrow portion of the subject\, allowing for computationally simple inversion of a one-dimensional contour rather than an entire two-d imensional surface. Stacking the reconstructed contours for various horizo ntal positions provides the full object image.\n\nAssuming typical smooth variations of the human body surfaces\, the object detection is performed by comparing the retrieved surface with a smoothed one. In addition\, weak dielectric explosive threats can be detected as foreign objects\, and dis tinguished from innocuous concealed items. The improved advanced imaging t echnology system has the promise of reducing false alarms and minimizing p at-downs at airport security lines.\n\nAgenda: \n10:00am - 10:10am Sign-in and networking\n10:10am - 11:30am Seminar and Q&A\n\n10155 Pacific Height s Blvd\, San Diego\, California\, United States LOCATION:10155 Pacific Heights Blvd\, San Diego\, California\, United State s ORGANIZER:alvin.loke@alumni.stanford.edu SEQUENCE:1 SUMMARY:Multistatic 3D Whole Body Millimeter-Wave Imaging for Explosive Det ection URL;VALUE=URI:https://events.vtools.ieee.org/m/211654 X-ALT-DESC:Description: <br /><p>Most of the airport passenger security sys tems use millimeter-wave radar portals to detect threats concealed under c lothing. These sophisticated sensors employ advanced RF radar modules and GPU-based accelerated processing. While they are very sensitive\, alerting on even small anomalies\, they are prone to false alarms\, which lead to invasive pat-downs.</p>\n<p>New research in multistatic focusing radar sys tems has the potential to improve detection and lower false alarms. Improv ements in the antenna system and in the inversion algorithms help rule out innocent objects while making the detection of non-shape-specific anomali es more likely\, without increasing the processing time.</p>\n<p>A propose d toroidal reflector antenna\, consisting of a tilted ellipse rotated abou t the vertical axis\, provides for multiple\, overlapping high-resolution nearfield beams that form multi-view\, true multistatic mm-wave imaging fo r security applications.&nbsp\; Modeled results indicate the point spread function (PSF) on a torso target is wide and short\, allowing for quickly computed 2D images which can be stacked to reconstruct detailed 3D surface s. &nbsp\;The elliptical curvature in the vertical plane focuses beams to narrow horizontal slices on the object to be imaged.&nbsp\; With only this slice illuminated\, the scattered field will be due to just this narrow p ortion of the subject\, allowing for computationally simple inversion of a one-dimensional contour rather than an entire two-dimensional surface.&nb sp\; Stacking the reconstructed contours for various horizontal positions provides the full object image.&nbsp\;</p>\n<p>Assuming typical smooth var iations of the human body surfaces\, the object detection is performed by comparing the retrieved surface with a smoothed one. In addition\, weak di electric explosive threats can be detected as foreign objects\, and distin guished from innocuous concealed items. The improved advanced imaging tech nology system has the promise of reducing false alarms and minimizing pat- downs at airport security lines.</p><br /><br />Agenda: <br /><p>10:00am - 10:10am &nbsp\;Sign-in and networking<br /> 10:10am - 11:30am &nbsp\;Semi nar and Q&amp\;A</p> END:VEVENT END:VCALENDAR