Federal Aviation Administration Agenda Item 2.2: Post-Implementation Analysis of Data Link...
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![Page 1: Federal Aviation Administration Agenda Item 2.2: Post-Implementation Analysis of Data Link Performance Following Release 15 (R15) Ground Earth Station.](https://reader036.fdocuments.in/reader036/viewer/2022070305/551549bd550346c77d8b62cf/html5/thumbnails/1.jpg)
Federal AviationAdministration
Agenda Item 2.2:
Post-Implementation Analysis of Data Link Performance FollowingRelease 15 (R15) Ground Earth Station Software Upgrade
SOCM/2 IP/nnAttachment A
Bangkok, Thailand8-10 February 2012
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2Federal AviationAdministration
SOCM/2 IP/nn Attachment ABangkok, Thailand 8-10 February 2012
Contents
Summary of Release 15 GES Upgrade Data Link Performance Analysis of CPDLC and
ADS-C Technical Performance by GES Before = 2 months prior to month in which upgrade
occurred After = 2 months after month in which upgrade occurred Most recent = November/December 2011
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3Federal AviationAdministration
SOCM/2 IP/nn Attachment ABangkok, Thailand 8-10 February 2012
Summary of Release 15 GES Upgrade
• Release 15 (R15): Most recent system software upgrade for ground earth stations interfacing with Inmarsat Classic Aero I-3 satellites
• Purpose of upgrade: – To improve GES data link delivery capability and aircraft log-on management
subsystems– To enhance GES traffic handling and monitoring subsystems
GES Identifier and Location Associated DSP Date of R15 Upgrade
XXE – Eik, Norway ARINC 31 January 2010
XXC – Santa Paula, California, USA ARINC 16 February 2010
AOW2 – Aussaguel, France SITA 31 May 2010
POR1 – Perth, Australia SITA 6 July 2010
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4Federal AviationAdministration
SOCM/2 IP/nn Attachment ABangkok, Thailand 8-10 February 2012
Data Link Performance Comparison forEik GES (XXE)
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5Federal AviationAdministration
SOCM/2 IP/nn Attachment ABangkok, Thailand 8-10 February 2012
![Page 6: Federal Aviation Administration Agenda Item 2.2: Post-Implementation Analysis of Data Link Performance Following Release 15 (R15) Ground Earth Station.](https://reader036.fdocuments.in/reader036/viewer/2022070305/551549bd550346c77d8b62cf/html5/thumbnails/6.jpg)
6Federal AviationAdministration
SOCM/2 IP/nn Attachment ABangkok, Thailand 8-10 February 2012
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7Federal AviationAdministration
SOCM/2 IP/nn Attachment ABangkok, Thailand 8-10 February 2012
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8Federal AviationAdministration
SOCM/2 IP/nn Attachment ABangkok, Thailand 8-10 February 2012
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9Federal AviationAdministration
SOCM/2 IP/nn Attachment ABangkok, Thailand 8-10 February 2012
Summary of Observed Performance Following R15 Upgrade
• Eik GES:– Improvement in the ACTP was not observed immediately
following the R15 upgrade, but the most recent data does show a noticeable improvement in performance for CPDLC transactions
– ADS-C downlink latency performance is observed to have degraded in the period immediately following the upgrade as well as in the most recent period
![Page 10: Federal Aviation Administration Agenda Item 2.2: Post-Implementation Analysis of Data Link Performance Following Release 15 (R15) Ground Earth Station.](https://reader036.fdocuments.in/reader036/viewer/2022070305/551549bd550346c77d8b62cf/html5/thumbnails/10.jpg)
10Federal AviationAdministration
SOCM/2 IP/nn Attachment ABangkok, Thailand 8-10 February 2012
Data Link Performance Comparison forSanta Paula GES (XXC)
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11Federal AviationAdministration
SOCM/2 IP/nn Attachment ABangkok, Thailand 8-10 February 2012
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12Federal AviationAdministration
SOCM/2 IP/nn Attachment ABangkok, Thailand 8-10 February 2012
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13Federal AviationAdministration
SOCM/2 IP/nn Attachment ABangkok, Thailand 8-10 February 2012
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14Federal AviationAdministration
SOCM/2 IP/nn Attachment ABangkok, Thailand 8-10 February 2012
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15Federal AviationAdministration
SOCM/2 IP/nn Attachment ABangkok, Thailand 8-10 February 2012
Summary of Observed Performance Following R15 Upgrade
• Santa Paula GES:– Improvement can be observed for both the ACTP for CPDLC
transactions and ADS-C downlink latency performance for ADS-C downlink messages
– Improvement shown to be stable between the period immediately following the upgrade and the most recent period of observation for both performance measures
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16Federal AviationAdministration
SOCM/2 IP/nn Attachment ABangkok, Thailand 8-10 February 2012
Data Link Performance Comparison forAussaguel GES (AOW2)
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17Federal AviationAdministration
SOCM/2 IP/nn Attachment ABangkok, Thailand 8-10 February 2012
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18Federal AviationAdministration
SOCM/2 IP/nn Attachment ABangkok, Thailand 8-10 February 2012
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19Federal AviationAdministration
SOCM/2 IP/nn Attachment ABangkok, Thailand 8-10 February 2012
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20Federal AviationAdministration
SOCM/2 IP/nn Attachment ABangkok, Thailand 8-10 February 2012
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21Federal AviationAdministration
SOCM/2 IP/nn Attachment ABangkok, Thailand 8-10 February 2012
Summary of Observed Performance Following R15 Upgrade
• Aussaguel GES:– Improvement can be observed for both the ACTP for CPDLC
transactions and ADS-C downlink latency performance for ADS-C downlink messages
– Continued improvement shown between the period immediately following the upgrade and the most recent period of observation for both performance measures
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22Federal AviationAdministration
SOCM/2 IP/nn Attachment ABangkok, Thailand 8-10 February 2012
Data Link Performance Comparison forPerth GES (POR1)
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23Federal AviationAdministration
SOCM/2 IP/nn Attachment ABangkok, Thailand 8-10 February 2012
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24Federal AviationAdministration
SOCM/2 IP/nn Attachment ABangkok, Thailand 8-10 February 2012
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25Federal AviationAdministration
SOCM/2 IP/nn Attachment ABangkok, Thailand 8-10 February 2012
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26Federal AviationAdministration
SOCM/2 IP/nn Attachment ABangkok, Thailand 8-10 February 2012
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27Federal AviationAdministration
SOCM/2 IP/nn Attachment ABangkok, Thailand 8-10 February 2012
Summary of Observed Performance Following R15 Upgrade
• Perth GES:– Slight improvement can be observed for both the ACTP for
CPDLC transactions and ADS-C downlink latency performance for ADS-C downlink messages
– Continued improvement shown between the period immediately following the upgrade and the most recent period of observation for ACTP
– Improvement shown to be stable between the period immediately following the upgrade and the most recent period of observation for the ADS-C downlink latency performance
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28Federal AviationAdministration
SOCM/2 IP/nn Attachment ABangkok, Thailand 8-10 February 2012
Conclusions
• Overall improvement in data link performance at GES level following R15 upgrade
• Improvement most noticeable at the Santa Paula and Aussaguel GES
• In general - upgrade appears to have had more of an impact on the ACTP than on the ADS-C downlink latency performance