BEGIN:VCALENDAR VERSION:2.0 PRODID:IEEE vTools.Events//EN CALSCALE:GREGORIAN BEGIN:VTIMEZONE TZID:Canada/Pacific BEGIN:DAYLIGHT DTSTART:20170312T030000 TZOFFSETFROM:-0800 TZOFFSETTO:-0700 RRULE:FREQ=YEARLY;BYDAY=2SU;BYMONTH=3 TZNAME:PDT END:DAYLIGHT BEGIN:STANDARD DTSTART:20171105T010000 TZOFFSETFROM:-0700 TZOFFSETTO:-0800 RRULE:FREQ=YEARLY;BYDAY=1SU;BYMONTH=11 TZNAME:PST END:STANDARD END:VTIMEZONE BEGIN:VEVENT DTSTAMP:20170301T181010Z UID:9A993497-FB71-11E6-A7C6-0050568D7F66 DTSTART;TZID=Canada/Pacific:20170317T095000 DTEND;TZID=Canada/Pacific:20170317T110000 DESCRIPTION:Millimeter-wave signals span the frequency range of 30 GHz to 3 00 GHz\,\ncorresponding to a wavelength range of 10 mm to 1 mm. Signals at these\nfrequencies can easily penetrate inside dielectric materials and c omposites and\ninteract with their inner structures. The relatively small wavelengths and wide\nbandwidths associated with these signals enable the production of high spatial-\nresolution images of materials and structures . Incorporating imaging techniques such\nas lens-focused and near-field te chniques\, synthetic aperture focusing\, holographical\nmethods based on r obust back-propagation algorithms with more advanced and\nunique millimete r wave imaging systems have brought upon a flurry of activities in\nthis a rea and in particular for nondestructive evaluation (NDE) applications. Th ese\nimaging systems and techniques have been successfully\napplied for a wide range of critical NDE-related applications.\n\nAlthough\, near-field techniques have also been prominently used for these\napplications in the past\, undesired issues related to changing standoff distance have\nresult ed in several innovative and automatic standoff distance variation removal \ntechniques. Ultimately\, imaging techniques must produce high-resolution 3D images\,\nbecome real-time\, and be implemented using portable systems . To this end and to\nexpedite the imaging process while providing a high- resolution images\, the design\nand demonstration of a 6" by 6" one-shot\, rapid and portable imaging system\n(Microwave Camera)\, consisting of 576 resonant slot elements\, was completed in\n2011. Subsequently\, efforts w ere expended to design and implement several different\nvariations of this imaging system to accommodate one-sided and mono-static\nimaging\, while enabling 3D image production using non-uniform rapid scanning of an\nobjec t\, as well as increasing the operating frequency into higher millimeter w ave\nfrequencies. These efforts have led to the development of a real-time \, portable\, high-\nresolution and 3D imaging microwave camera operating in the 20-30 GHz frequency\nrange which was recently completed. This prese ntation provides an overview of these\ntechniques\, along with illustratio n of several typical examples where these imaging\ntechniques have effecti vely provided viable solutions to many critical NDE problems.\n\nCo-sponso red by: IEEE IMS TC-36\n\nSpeaker(s): R. Zoughi \, \, R. Zoughi \, \n\nRoo m: 026\, Bldg: ADM\, UBC\, Okanagan Campus\, 3333 University Way\, Kelowna \, British Columbia\, Canada\, V1V 1V7 LOCATION:Room: 026\, Bldg: ADM\, UBC\, Okanagan Campus\, 3333 University Wa y\, Kelowna\, British Columbia\, Canada\, V1V 1V7 ORGANIZER:youry@ieee.org SEQUENCE:5 SUMMARY:Evolution of Microwave and Millimeter Wave Imaging for NDE Applicat ions URL;VALUE=URI:https://events.vtools.ieee.org/m/44113 X-ALT-DESC:Description: <br /><p>Millimeter-wave signals span the frequency range of 30 GHz to 300 GHz\,<br /> corresponding to a wavelength range of 10 mm to 1 mm. Signals at these<br /> frequencies can easily penetrate in side dielectric materials and composites and<br /> interact with their inn er structures. The relatively small wavelengths and wide<br /> bandwidths associated with these signals enable the production of high spatial-<br /> resolution images of materials and structures. Incorporating imaging tech niques such<br /> as lens-focused and near-field techniques\, synthetic ap erture focusing\, holographical<br /> methods based on robust back-propaga tion algorithms with more advanced and<br /> unique millimeter wave imagin g systems have brought upon a flurry of activities in<br /> this area and in particular for nondestructive evaluation (NDE) applications. These<br / > imaging systems and techniques have been successfully<br /> applied for a wide range of critical NDE-related applications.</p>\n<p>Although\, near -field techniques have also been prominently used for these<br /> applicat ions in the past\, undesired issues related to changing standoff distance have<br /> resulted in several innovative and automatic standoff distance variation removal<br /> techniques. Ultimately\, imaging techniques must p roduce high-resolution 3D images\,<br /> become real-time\, and be impleme nted using portable systems. To this end and to<br /> expedite the imaging process while providing a high-resolution images\, the design<br /> and d emonstration of a 6" by 6" one-shot\, rapid and portable imaging system<br /> (Microwave Camera)\, consisting of 576 resonant slot elements\, was co mpleted in<br /> 2011. Subsequently\, efforts were expended to design and implement several different<br /> variations of this imaging system to acc ommodate one-sided and mono-static<br /> imaging\, while enabling 3D image production using non-uniform rapid scanning of an<br /> object\, as well as increasing the operating frequency into higher millimeter wave<br /> fr equencies. These efforts have led to the development of a real-time\, port able\, high-<br /> resolution and 3D imaging microwave camera operating in the 20-30 GHz frequency<br /> range which was recently completed. This pr esentation provides an overview of these<br /> techniques\, along with ill ustration of several typical examples where these imaging<br /> techniques have effectively provided viable solutions to many critical NDE problems. </p> END:VEVENT END:VCALENDAR