Effectively Expand AMDAR Data Sources

1
Effectively Expand AMDAR Data Sources

• Tan Xijing
• ADCC, ATMB CAAC
• 2009-11-15

2
AMDAR Activities in China

• Activities from 2007
• Work together with Airlines to turn on AMDAR
  downlink
• Problems
• AMDAR tests and trials
• Activities right now
• Expand meteorological information source from
  downlink messages
• Enhance AMDAR messages processing system on ground

3
Activities from 2007
4
AMDAR Activities from 2007

• Work with Airlines to open AMDAR downlink
• Establish and improve AMDAR QC system
• Problems
• Test and trials

5
AMDAR Activities from 2007

• Work with Airlines to open AMDAR downlink
• Air China 12B737NG(WOB)
• China Southern Airlines 12B737NG(WOB),4B757(WXR
  )
• Shanghai Airlines 18B737NG(WXM)
• Shandong Airlines 6B737NG(WOB)

6
Establish and improve AMDAR QC System

• Establish and improve AMDAR QC system
• Monitoring all downlinks including meteorological
  elements, filtering abnormal element and downlink
  message
• Logging all abnormal downlinks and recording
  problems in meteorological observations
• Generating AMDAR QC reports

7
Establish and improve AMDAR QC System
MET and 4D elements
IT system in MET office
Observation time
Raw messages
Data processing
Flight phase
MET elements
QC operation log per day

• The Architecture of AMDAR QC system

8
AMDAR Activities from 2007

• Problems
• Because of the cost, Airlines intend to reduce
  the traffic of AMDAR downlinks
• Airlines suggest to reduce or eliminate dedicate
  AMDAR format downlink, or increase intervals of
  observation points
• Airlines request to promote latitude and
  longitude precise of AMDAR downlinks to support
  flight tracking

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AMDAR Activities from 2007
QU PEKAGCA .BJSXCXA 270710 DFD FI CA1818/AN
B-2650 DT BJS NKG 270710 D59A -
WOB B-2650------08274004 07010030N2332934172504N33
19E11821278008 0704N013N2953156275805N3341E1181325
5023 0707N023N3033156275805N3403E11805225012 0710N
013N2933155775705N3425E11756239027
Latitude1 111Km 1' 1855m
1? 31m Longitude (40)
1 85Km 1'
1421m 1? 24m
For latitude and longitude element, the precision
is not good enough for flight tracking, and
Airlines cannot improve them easily
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AMDAR Activities from 2007

• Tests and trials Air China conducted tests of
  using Current Position Report to replace some of
  AMDAR WOB reports, because
• AMDAR downlinks cannot turn off/on and cannot
  change intervals of observation points during
  flight
• AMDAR WOB reports generate data link traffic cost
  outside China
• Latitude and longitude precise of AMDAR downlinks
  cannot support flight tracking requirements

Solution AirChina request to reduce AMDAR WOB
and replace it with density increased position
report including meteorological elements
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AMDAR Activities from 2007

• Tests and trials
• Problem when using position report
• Some types of aircraft cannot get certain
  elements required by AMDAR, such as TAT,flight
  phase (PF)
• Statistic
• 30,000 observation points per day
• 7,000 messages lack of certain elements

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AMDAR Activities from 2007

• Problems when using POS report

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AMDAR Activities from 2007
The example of current position report
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AMDAR Activities from 2007
737-600 lack of MACH, flight phase and
TAT  M10FI CA4189/AN B-5037DT BJS CIF 010407
M05A-  POS010407,N 42.927,E120.316,----,2562,2303
8,0190,35100,59,----,  22,- 737-800 Lack of
flight phase  M10FI CA1508/AN B-5327DT BJS SJW
010310 M18A-  POS010310,N 37.087,E116.894,
769,3067,27652,0036,27600,54,-  3,  24,-
MACH
TAT
PH
PH
Downlink messages from Air China(CA)
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AMDAR Activities from 2007
A319lack of MACH  M10FI CA4410/AN B-6035DT BJS
BPX 010310 M21A-  POS010310,N 30.610,E
97.047,----,134,14618,15,14872,79,9,4,6  
MACH
Downlink message from Air China(CA)fleet
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AMDAR Activities from 2007

• Tests and Trials DFD report
• 4D position information collected from engine
  report (DFD), together with MET element, can work
  as AMDAR data source
• SRS for DFD are required (work with airlines)
• Recognizable DFD formats includesTKO,CRZ,TUR
• Quality is good, but number is limited

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AMDAR Activities from 2007

• Tests and Trials
• Problems when using DFD reports
• Flight phases defined in AMDAR reference manual
  are different from SRS of engine report. Data
  adaptation is required.
• Problems exist in system integration level
  because message formats are different from
  aircraft types.
• Statistic
• 800 reports per day
• 800 observation points

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AMDAR Activities from 2007
QU CTUUOSZ .BJSXCXA 270714 DFD FI SZ436/AN
B-5037 DT BJS TSN 270714 D18A - CRZ0000061930
29--- --- 260814023240 15.5 -9.3
235980.6841078404 3041SCR2A05 12 0 0 0 0 81.9
81.8 94.0 93.8627629 2842 2801 60.2
60.246511121110.050.110.110.25112
530.060.130.060.08149102110LO LO
0 001100293.8436.3N28.6146N28.6146E104.1209E104.12
09245 6110960 0.0
Example of DFD report
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AMDAR Daily Report
AMDAR report in 2008.09.24
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AMDAR Activities Right Now
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AMDAR Activities Right Now

• Expand data source of Meteorological information
  from downlink messages
• ADCC is working on using position reports as
  AMDAR sources
• Air China has applied new position report format,
  including MET elements, and tested on B737NG and
  A320 aircraft
• Air China also planed to increase numbers of
  aircraft using new format position report to
  80-100 aircraft

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AMDAR Activities Right Now

• Expand MET information source from downlink
  messages
• ADCC is working on using engine reports as AMDAR
  sources
• Air China, Shenzhen Airlines, Sichuan Airlines
  have provided B737 and A320 DFD SRS
• DFD report of more than 300 aircraft have been
  obtained

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AMDAR Activities Right Now

• Enhance AMDAR messages processing and QC system
  on ground
• Enhance recognition and QC capability of position
  reports
• Enhance recognition and QC capability of engine
  reports
• Enhance recognition and quality evaluation
  capability of MET elements in position and engine
  reports

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THANK YOU FOR YOUR ATTENTION
Q A
Tan Xijing ( tanxj_at_adcc.com.cn ), RD dept,
Aviation Data Communication Corporation. (ADCC),
ATMB, CAAC