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DTSTAMP:20231205T114806Z
UID:D5E3C780-AC7B-4B70-9E5A-E88F7D40AA96
DTSTART;TZID=Australia/Sydney:20231106T103000
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DESCRIPTION:Abstract:\n\nThere has been significant research devoted to the
  development of distributed microwave wireless systems in recent years. Th
 e progression from large\, single-platform wireless systems to collections
  of smaller\, coordinated systems on separate platforms enables significan
 t benefits for radar\, remote sensing\, communications\, and other applica
 tions. The ultimate level of coordination between platforms is at the wave
 length level\, where separate platforms operate as a coherent distributed 
 system. Wireless coherent distributed systems operate in essence as distri
 buted phased arrays\, and the signal gains that can be achieved scale prop
 ortionally 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 ent
 ails wireless frequency synchronization\, phase calibration\, and time ali
 gnment\, but for remote sensing operations\, phase control also requires h
 igh-accuracy knowledge of the relative positions of the nodes in the array
  to support beamforming.\n\nThis lecture presents an overview of the chall
 enges involved in distributed phased array coordination\, and describes re
 cent progress on microwave technologies that address these challenges. Req
 uirements for achieving distributed phase coherence at microwave frequenci
 es are discussed\, including the impact of component non-idealities such a
 s oscillator drift on beamforming performance. Architectures for enabling 
 distributed beamforming are reviewed\, along with the relative challenges 
 between transmit and receive beamforming. Microwave and millimeter-wave te
 chnologies enabling wireless phase-coherent synchronization are discussed\
 , focusing on technologies for high-accuracy internode ranging\, wireless 
 frequency transfer\, and high-accuracy time alignment. The lecture conclud
 es with a discussion of open challenges in distributed phased arrays\, and
  where microwave technologies may play a role.\n\nSpeaker(s): Prof. Jeffre
 y Nanzer \n\nRoom: 113\, Bldg: 11\, CB11.12.113\, Room 113\, Level 12\, UT
 S\, Sydney\, New South Wales\, Australia\, 2007
LOCATION:Room: 113\, Bldg: 11\, CB11.12.113\, Room 113\, Level 12\, UTS\, S
 ydney\, New South Wales\, Australia\, 2007
ORGANIZER:yang.yang-1@uts.edu.au
SEQUENCE:15
SUMMARY:DISTRIBUTED PHASED ARRAYS: CHALLENGES AND RECENT PROGRESS
URL;VALUE=URI:https://events.vtools.ieee.org/m/380300
X-ALT-DESC:Description: <br /><p><span style="font-size: 12pt\; font-family
 : arial\, helvetica\, sans-serif\;"><strong>Abstract</strong>:</span></p>\
 n<p><span style="font-size: 12pt\; font-family: arial\, helvetica\, sans-s
 erif\;">There has been significant research devoted to the development of 
 distributed microwave wireless systems in recent years. The progression fr
 om large\, single-platform wireless systems to collections of smaller\, co
 ordinated systems on separate platforms enables significant benefits for r
 adar\, remote sensing\, communications\, and other applications. The ultim
 ate level of coordination between platforms is at the wavelength level\, w
 here separate platforms operate as a coherent distributed system. Wireless
  coherent distributed systems operate in essence as distributed phased arr
 ays\, and the signal gains that can be achieved scale proportionally to th
 e number of transmitters squared multiplied by the number of receivers\, p
 roviding potentially dramatic increases in wireless system capabilities. D
 istributed array coordination requires accurate control of the relative el
 ectrical states of the nodes. Generally\, such control entails wireless fr
 equency synchronization\, phase calibration\, and time alignment\, but for
  remote sensing operations\, phase control also requires high-accuracy kno
 wledge of the relative positions of the nodes in the array to support beam
 forming.</span></p>\n<p style="background: white\;"><span style="font-size
 : 12pt\; font-family: arial\, helvetica\, sans-serif\; color: #181818\;">T
 his lecture presents an overview of the challenges involved in distributed
  phased array coordination\, and describes recent progress on microwave te
 chnologies that address these challenges. Requirements for achieving distr
 ibuted phase coherence at microwave frequencies are discussed\, including 
 the impact of component non-idealities such as oscillator drift on beamfor
 ming performance. Architectures for enabling distributed beamforming are r
 eviewed\, along with the relative challenges between transmit and receive 
 beamforming. Microwave and millimeter-wave technologies enabling wireless 
 phase-coherent synchronization are discussed\, focusing on technologies fo
 r high-accuracy internode ranging\, wireless frequency transfer\, and high
 -accuracy time alignment. The lecture concludes with a discussion of open 
 challenges in distributed phased arrays\, and where microwave technologies
  may play a role.</span></p>
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