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DTSTART:20240310T030000
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DTSTAMP:20241021T000107Z
UID:5817ED73-7C6B-4BF6-8263-0F9B4845FC0D
DTSTART;TZID=America/Los_Angeles:20241017T183000
DTEND;TZID=America/Los_Angeles:20241017T203000
DESCRIPTION:A unique electrical hardware configuration was included onboard
  21 SpaceX Starlink satellites to enable the direct detection of electrica
 l arc discharge events resulting from spacecraft charging phenomena. Given
  the relatively high number of independent satellites equipped with arc de
 tection circuits\, arc discharge events were observed with high spatial re
 solution between +/- 43°N latitude at altitudes ranging from 330 to 390 k
 ilometers over the course of one year\, from May 2023 to May 2024. Using t
 he observed rate of arc discharge events as a proxy for local plasma param
 eters\, a map of the Appleton Anomaly was generated. The arc detection cir
 cuit functionality was validated through on-orbit testing and ground testi
 ng. Ground tests were conducted a plasma source and representative spacecr
 aft hardware within a high-vacuum facility. On-orbit experiments validated
  the correlation between arc discharge events and spacecraft charging phen
 omena - a plasma contactor was used to measure neutralization current from
  the spacecraft to its surrounding ambient plasma environment\, and satell
 ite orientation studies were conducted to examine the impact of the spacec
 raft’s ion wake on arc rate. The results of the on-orbit and ground test
 s support a hypothesis that the frequency of arc discharge events is direc
 tly related to the local plasma density. A proxy map of plasma density was
  generated\, which shows strong agreement with the International Reference
  Ionosphere model (IRI-2016) and the World Magnetic Model (WMM).\n\nBldg: 
 Hub 101\, 31416 Agoura Rd Suite \, Suite 105\, Westlake Village\, Californ
 ia\, United States\, 91361\, Virtual: https://events.vtools.ieee.org/m/439
 711
LOCATION:Bldg: Hub 101\, 31416 Agoura Rd Suite \, Suite 105\, Westlake Vill
 age\, California\, United States\, 91361\, Virtual: https://events.vtools.
 ieee.org/m/439711
ORGANIZER:vslin@ieee.org
SEQUENCE:6
SUMMARY:Arc Detection on SpaceX Starlink Satellites
URL;VALUE=URI:https://events.vtools.ieee.org/m/439711
X-ALT-DESC:Description: <br /><p>A unique electrical hardware configuration
  was included onboard 21 SpaceX Starlink satellites to enable the direct d
 etection of electrical arc discharge events resulting from spacecraft char
 ging phenomena. Given the relatively high number of independent satellites
  equipped with arc detection circuits\, arc discharge events were observed
  with high spatial resolution between +/- 43&deg\;N latitude at altitudes 
 ranging from 330 to 390 kilometers over the course of one year\, from May 
 2023 to May 2024. Using the observed rate of arc discharge events as a pro
 xy for local plasma parameters\, a map of the Appleton Anomaly was generat
 ed. The arc detection circuit functionality was validated through on-orbit
  testing and ground testing. Ground tests were conducted a plasma source a
 nd representative spacecraft hardware within a high-vacuum facility. On-or
 bit experiments validated the correlation between arc discharge events and
  spacecraft charging phenomena - a plasma contactor was used to measure ne
 utralization current from the spacecraft to its surrounding ambient plasma
  environment\, and satellite orientation studies were conducted to examine
  the impact of the spacecraft&rsquo\;s ion wake on arc rate. The results o
 f the on-orbit and ground tests support a hypothesis that the frequency of
  arc discharge events is directly related to the local plasma density. A p
 roxy map of plasma density was generated\, which shows strong agreement wi
 th the International Reference Ionosphere model (IRI-2016) and the World M
 agnetic Model (WMM).<em><br></em></p>
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