BEGIN:VCALENDAR VERSION:2.0 PRODID:IEEE vTools.Events//EN CALSCALE:GREGORIAN BEGIN:VTIMEZONE TZID:America/Denver BEGIN:DAYLIGHT DTSTART:20230312T030000 TZOFFSETFROM:-0700 TZOFFSETTO:-0600 RRULE:FREQ=YEARLY;BYDAY=2SU;BYMONTH=3 TZNAME:MDT END:DAYLIGHT BEGIN:STANDARD DTSTART:20231105T010000 TZOFFSETFROM:-0600 TZOFFSETTO:-0700 RRULE:FREQ=YEARLY;BYDAY=1SU;BYMONTH=11 TZNAME:MST END:STANDARD END:VTIMEZONE BEGIN:VEVENT DTSTAMP:20231024T185541Z UID:A056C1D9-2EF9-4B5B-A2E6-F88C71AA8764 DTSTART;TZID=America/Denver:20231012T181500 DTEND;TZID=America/Denver:20231012T200000 DESCRIPTION:Join us for distinguished MTT guest lecturer Jeffrey Nanzer and his presentation on Distributed Phased Arrays: Challenges and Recent Prog ress.\n\nThere has been significant research devoted to the development of distributed microwave wireless systems in recent years. The progression f rom large\, single-platform wireless systems to collections of smaller\, c oordinated systems on separate platforms enables significant benefits for radar\, remote sensing\, communications\, and other applications. The ulti mate level of coordination between platforms is at the wavelength level\, where separate platforms operate as a coherent distributed system. Wireles s coherent distributed systems operate in essence as distributed phased ar rays\, and the signal gains that can be achieved scale proportionally to t he number of transmitters squared multiplied by the number of receivers\, providing potentially dramatic increases in wireless system capabilities. Distributed array coordination requires accurate control of the relative e lectrical states of the nodes. Generally\, such control entails wireless f requency synchronization\, phase calibration\, and time alignment\, but fo r remote sensing operations\, phase control also requires high-accuracy kn owledge of the relative positions of the nodes in the array to support bea mforming.\n\nThis lecture presents an overview of the challenges involved in distributed phased array coordination\, and describes recent progress o n microwave technologies that address these challenges. Requirements for a chieving distributed phase coherence at microwave frequencies are discusse d\, including the impact of component non-idealities such as oscillator dr ift on beamforming performance. Architectures for enabling distributed bea mforming are reviewed\, along with the relative challenges between transmi t and receive beamforming. Microwave and millimeter-wave technologies enab ling wireless phase-coherent synchronization are discussed\, focusing on t echnologies for high-accuracy internode ranging\, wireless frequency trans fer\, and high-accuracy time alignment. The lecture concludes with a discu ssion of open challenges in distributed phased arrays\, and where microwav e technologies may play a role.\n\nCo-sponsored by: High Plains Chapter of the GRS\n\nSpeaker(s): Jeffrey Nanzer\, \n\nRoom: 1B70\, Bldg: Discovery Learning Center\, Engineering Dr\, Boulder\, CO 80302\, Boulder\, Colorado \, United States\, 80302 LOCATION:Room: 1B70\, Bldg: Discovery Learning Center\, Engineering Dr\, Bo ulder\, CO 80302\, Boulder\, Colorado\, United States\, 80302 ORGANIZER:tim.w.samson@gmail.com SEQUENCE:47 SUMMARY:Distributed Phased Arrays: Challenges and Recent Progress URL;VALUE=URI:https://events.vtools.ieee.org/m/377217 X-ALT-DESC:Description: <br /><div class="profile__bio">\n<p>Join us for di stinguished MTT guest lecturer Jeffrey Nanzer and his presentation on Dist ributed Phased Arrays: Challenges and Recent Progress.</p>\n<p>There has b een significant research devoted to the development of distributed microwa ve wireless systems in recent years. The progression from large\, single-p latform wireless systems to collections of smaller\, coordinated systems o n separate platforms enables significant benefits for radar\, remote sensi ng\, communications\, and other applications. The ultimate level of coordi nation between platforms is at the wavelength level\, where separate platf orms operate as a coherent distributed system. Wireless coherent distribut ed systems operate in essence as distributed phased arrays\, and the signa l gains that can be achieved scale proportionally to the number of transmi tters squared multiplied by the number of receivers\, providing potentiall y dramatic increases in wireless system capabilities. Distributed array co ordination requires accurate control of the relative electrical states of the nodes. Generally\, such control entails wireless frequency synchroniza tion\, phase calibration\, and time alignment\, but for remote sensing ope rations\, phase control also requires high-accuracy knowledge of the relat ive positions of the nodes in the array to support beamforming.</p>\n<p>Th is lecture presents an overview of the challenges involved in distributed phased array coordination\, and describes recent progress on microwave tec hnologies that address these challenges. Requirements for achieving distri buted phase coherence at microwave frequencies are discussed\, including t he impact of component non-idealities such as oscillator drift on beamform ing performance. Architectures for enabling distributed beamforming are re viewed\, along with the relative challenges between transmit and receive b eamforming. Microwave and millimeter-wave technologies enabling wireless p hase-coherent synchronization are discussed\, focusing on technologies for high-accuracy internode ranging\, wireless frequency transfer\, and high- accuracy time alignment. The lecture concludes with a discussion of open c hallenges in distributed phased arrays\, and where microwave technologies may play a role.</p>\n</div> END:VEVENT END:VCALENDAR