MGS Reception/Transmission Test: USAP 2003-2004 Field Season

1
MGS Reception/Transmission TestUSAP 2003-2004
Field Season

• Matthew Lazzara
• AMRC/SSEC
• University of Wisconsin-Madison
• Mike Comberiate
•  NASA Goddard Space Flight Center

Pat Smith/NSF
2

• Project Objectives
• Test the reception of Aqua and/or Terra satellite
  direct broadcast data (sample passes) with the
  MGS
• Process the data on station into scientifically
  usable data
• Transmit the results and other derived products
  back to the United States via the TDRSS/MTRS link
  with MGS

Pat Smith/NSF
3

• Objectives
• What it takes to accomplish this in terms of
  software, infrastructure, personnel, etc.
• The timing to do these tasks
• Identify any problems or obstacles to this
  process
• Software
• IMAPP
• RT-STPS

4
New Capabilities for MGS

• The following new capabilities have been
  demonstrated but are not yet operational
• MGS can now receive EOS Direct Broadcasts
• - Terra realtime (MODIS)
• - Aqua realtime (MODIS, AIRS, etc)
• - Available on McMurdo LAN for IMAPP to process
• Can receive EOS-Aqua playbacks at 150Mbps
• - Contains same data over an orbit.

• Can now return extremely large files to CONUS
• - One-way link to White Sands
• - Mail tapes to end user
• Next day as scheduled in advance
• Operational capabilities may require more
  resources

5
TSI Frame Sync DQM 150Mbps RAID -Linux red hat
with Timesys Kernel -For remote scheduling
either 1)API using ports 5001 and 5002
2)API using ports 6001 and 6002 for NASA file
transfer demonstration -Raid may also contain
Science products, such as EOS Direct Broadcast
movies -Data transfer via MTRS using internal s/w
of RAID and/or via NASA custom file transfer
10-meter MGS
MGS FY04 RAID to RAID transfers
Closed IONet
NSF LAN
LTO-200 Robotic Tape Library
SCSI
X Band RF equipment
External Site
200GB Tapes get shipped to Alaska SAR and/or sent
via TDRS to WSC. Also available to local MCM
users if needed.
Closed IONet
TDRS
Science Data or Telemetry Data DATA OUTPUTS
ONLY ECL/TTL CLOCK/DATA
Clock
MTRS2 RF Equipment
Data
White Sands Complex (WSC)
MTRS Laptops -Win2000 -Control/status only of
MTRS RF equipment
Control/Status
SCSI
NSF McMurdo LAN
LTO-200 Robotic Tape Library
-McMurdo generated data products -remote
scheduling via TSI software or NASA file transfer
software
NSF FW
Tapes shipped to Alaska SAR or others with LTO
tape drives
To Internet
LTO-200 Tape Drive
SCSI
TSI Frame Sync DQM 150Mbps RAID -VxWorks/Unix -F
or remote scheduling either 1)https GUI
2)API using ports 5001 and 5002 3)API using
ports 6001 and 6002 for NASA file transfer
demonstration
- Interface to Science Users in MCM Is this EOS
Data Processing Workstation - This computer is on
MCM LAN - For security, user at McMurdo must use
tape drive to retrieve/send any data to MGS RAID
Internet
A. Fortin 03/01/04
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Direct Broadcast from EOS

• MGS now has the capability to receive the
  realtime, direct broadcast telemetry from EOS
  Terra or EOS Aqua
• Key driver was to enable improved weather
  forecasting
• MODIS/AIRS vertical Water Vapor profiles
• Can easily meet the timeliness requirements for
  forecasting
• Data is recorded from the RAID onto Tapes
• Tapes are walked over to a computer on the
  Internet
• Data is converted to Level 0 and ready for
  processing by IMAPP software on-site in McMurdo
• Limited by availability of the single aperture

7
High Volume Data Return to CONUS

• Intended to enable data products generated in
  McMurdo to get to end users in CONUS
• Polar Stereographic Movies (NSF and NASA users)
• Also works for any spacecraft telemetry (NASA
  missions)
• TDRS is available for next day data returns
• Extremely high volume files are possible
  (125Mbps)
• Telemetry Files or Data Files
• Data received at White Sands (WSC) is taped and
  tapes mailed to end user
• Alternate DVD-RW option in the works for 4GB
  files
• Eventual https access from WSC for lower volume
  files

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Detailed RAID to RAID Communications
MGS RAID
LTO-200 Tape Library
SCSI
RF connection for sending file data to WSC RAID
Science Data or Telemetry Data DATA OUTPUTS
ONLY ECL/TTL CLOCK/DATA
TDRS
TCP Client (port 6001)
Data
Clock
MTRS2 RF Equipment
Closed IONet
WSC RF Equipment
Science Data or Telemetry Data DATA OUTPUTS
ONLY ECL/TTL CLOCK/DATA
WSC RAID
Firewall
Data
Clock
-FTP Server for science access to data (https
access eventually) -https server for access to
scheduling software
LTO-200 Tape Library
SCSI
TCP Server (port 6001)
TCP connection for acknowledgements to MGS RAID,
to maintain file transfers
SPTR LAN (Internet)
A. Fortin 03/01/04
9
MGS FY04 - New Capabilities Summary

-MGS RAID has been activated
and will be incorporated into the MGS
automation. -RAID enables 150Mbps data capture
from EOS -EOS direct broadcast collection is
possible but limited by 10-m antenna
availability. -Data returns to CONUS at 125Mbps
are working via TDRS. - TDRSS not interested in
meeting timeliness requirements but next day is
okay -NASA engineering effort now focused on RAID
install at WSC and Demonstration Mode of RAID
to RAID data transfers (via MTRS) from MGS to
WSC. -MGS RAID must remain on Closed for MGS
automation operations. -We put WSC RAID on the
Internet? -Internet WSC RAID requires no waiver
for RAID to RAID comms. -WSC RAID is always
listening for the MGS RAID to start a
connection -TCP comms between RAIDs is for
acknowledgements only of data through the TDRS
link. -Eventually will set up an https log-in
for end users to access data on WSC Drive
electronically, but that is constrained to low
volume data files. -A Tape mailing operation
is underway for the very high volume data
files -RAIDs cannot perform a transfer of data
when MGS RAID is receiving X-band pass. -RAID
will have software to allow remote
scheduling. -RAID will perform two types of
transfers -Telemetry transfers (raw data only,
can use existing software on RAIDs) -File
transfers (allows any type of file for transfer,
NASA built software) -NASA operates the
demonstration until NASA decides to turn over to
operations.
Comberiate 3/1/04
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Potential Upgrades if Funded

• Add a Data-Stripping capability in MCM
• Send low volume data to CONUS via Internet
• Send bulk data to CONUS via TDRS next day
• Add Second Aperture (fully automated)
• Recommend a X/S/L Receive-only 12-ft system
• Remove single point failure
• Increase number of supports per day
• Electronic access to WSC by end users
• Better connectivity is a function of need

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Results and Considerations

• MGS network connected to the McMurdo LAN
• Improved computing (AMRC) for handling IMAPP
  processing shear large volume of data
• Need to handle data flow back to the US
• TDRSS/MTRS time (24x7?)
• Internet (Commercial or Internet 2?) connection
  from Windsands/Goddard to end users (NCAR,
  Wisconsin, etc.)

• Succeeded in getting the telemetry data with MGS
• Problems with preprocessing data networking
• Didnt finish the full end to end test but
  learned some key issues
• These and other issues can be dealt with.