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VERSION:2.0
PRODID:IEEE vTools.Events//EN
CALSCALE:GREGORIAN
BEGIN:VTIMEZONE
TZID:Australia/Brisbane
BEGIN:STANDARD
DTSTART:19920301T020000
TZOFFSETFROM:+1100
TZOFFSETTO:+1000
TZNAME:AEST
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BEGIN:VEVENT
DTSTAMP:20231117T144349Z
UID:B3E54FE4-3A63-49EC-AFE0-4A02BC550AC9
DTSTART;TZID=Australia/Brisbane:20231114T140000
DTEND;TZID=Australia/Brisbane:20231114T150000
DESCRIPTION:There has been significant research devoted to the development 
 of distributed microwave wireless systems in recent years. The progression
  from large\, single-platform wireless systems to collections of smaller\,
  coordinated systems on separate platforms enables significant benefits fo
 r radar\, remote sensing\, communications\, and other applications. The ul
 timate level of coordination between platforms is at the wavelength level\
 , where separate platforms operate as a coherent distributed system. Wirel
 ess coherent distributed systems operate in essence as distributed phased 
 arrays\, and the signal gains that can be achieved scale proportionally to
  the 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
  electrical states of the nodes. Generally\, such control entails wireless
  frequency synchronization\, phase calibration\, and time alignment\, but 
 for remote sensing operations\, phase control also requires high-accuracy 
 knowledge of the relative positions of the nodes in the array to support b
 eamforming.\n\nThis lecture presents an overview of the challenges involve
 d in distributed phased array coordination\, and describes recent progress
  on microwave technologies that address these challenges. Requirements for
  achieving distributed phase coherence at microwave frequencies are discus
 sed\, including the impact of component non-idealities such as oscillator 
 drift on beamforming performance. Architectures for enabling distributed b
 eamforming are reviewed\, along with the relative challenges between trans
 mit and receive beamforming. Microwave and millimeter-wave technologies en
 abling wireless phase-coherent synchronization are discussed\, focusing on
  technologies for high-accuracy internode ranging\, wireless frequency tra
 nsfer\, and high-accuracy time alignment. The lecture concludes with a dis
 cussion of open challenges in distributed phased arrays\, and where microw
 ave technologies may play a role.\n\nSpeaker(s): Prof. Jeffrey Nanzer\, \n
 \nRoom: 07-222 - Learning Theatre\, Bldg: Parnell Building\, The Universit
 y of Queensland\, St Lucia \, Queensland\, Australia\, 4072
LOCATION:Room: 07-222 - Learning Theatre\, Bldg: Parnell Building\, The Uni
 versity of Queensland\, St Lucia \, Queensland\, Australia\, 4072
ORGANIZER:h.espinosa@griffith.edu.au
SEQUENCE:35
SUMMARY:DISTRIBUTED PHASED ARRAYS: CHALLENGES AND RECENT PROGRESS
URL;VALUE=URI:https://events.vtools.ieee.org/m/381836
X-ALT-DESC:Description: <br /><p>There has been significant research devote
 d to the development of distributed microwave wireless systems in recent y
 ears. The progression from large\, single-platform wireless systems to col
 lections of smaller\, coordinated systems on separate platforms enables si
 gnificant benefits for radar\, remote sensing\, communications\, and other
  applications. The ultimate level of coordination between platforms is at 
 the wavelength level\, where separate platforms operate as a coherent dist
 ributed system. Wireless coherent distributed systems operate in essence a
 s distributed phased arrays\, and the signal gains that can be achieved sc
 ale proportionally to the number of transmitters squared multiplied by the
  number of receivers\, providing potentially dramatic increases in wireles
 s system capabilities. Distributed array coordination requires accurate co
 ntrol of the relative electrical states of the nodes. Generally\, such con
 trol entails wireless frequency synchronization\, phase calibration\, and 
 time alignment\, but for remote sensing operations\, phase control also re
 quires high-accuracy knowledge of the relative positions of the nodes in t
 he array to support beamforming.</p>\n<p>This lecture presents an overview
  of the challenges involved in distributed phased array coordination\, and
  describes recent progress on microwave technologies that address these ch
 allenges. Requirements for achieving distributed phase coherence at microw
 ave frequencies are discussed\, including the impact of component non-idea
 lities such as oscillator drift on beamforming performance. Architectures 
 for enabling distributed beamforming are reviewed\, along with the relativ
 e challenges between transmit and receive beamforming. Microwave and milli
 meter-wave technologies enabling wireless phase-coherent synchronization a
 re discussed\, focusing on technologies for high-accuracy internode rangin
 g\, wireless frequency transfer\, and high-accuracy time alignment. The le
 cture concludes with a discussion of open challenges in distributed phased
  arrays\, and where microwave technologies may play a role.</p>
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