3. DCS POINT OF CONTACT
• WCDA Station’s first point of contact for help
is the DCS Help Desk at 757-824-7450 or 7451
• Email is WCDADAPS@NOAA.GOV with
copies to michael.b.galeone@noaa.gov
• Contact Phil Whaley at (757) 824-7331 or Al
McMath at (757) 824-7316
•Wallops supports 24/7 operations
4. DCS Configuration
• Wallops now supports demods for two
complete spacecraft (120 channels each)
• One spare drawer on site (40 channels)
• To date three demod failures
• Preliminary testing has been conducted on
the 100/300 baud concept (using the
spare demods).
5. Wallops LRGS Configuration
• The demodulators for both East and West continue to
feed the LRGS directly.
• This means that the primary LRGS (cdadata) is not
dependent on DAPS. Use this as primary.
• The receive site (drot) gets its data from the DOMSAT
downlink which is heritage DAPS data.
• We now have a third site (cdabackup).
• Wallops supported the STWIG sub-committee
considering LRGS configuration, distribution, etc.
• Sites and IPs:
– http://cdadata.wcda.noaa.gov (205.156.2.174)
– http://drot.wcda.noaa.gov (205.156.2.186)
– http://cdabackup.wcda.noaa.gov (205.156.2.189)
6. LRIT Status
• LRIT traffic to Suitland is dependent on the Internet
• Transfer of data to Suitland continues to be a “double”
single point failure
• LRIT data is returned to Wallops via T-1 lines. LRIT is an
advantage to international users because DOMSAT is
limited to CONUS.
• LRIT now has full East/West data streams
• An automatic re-transmission (one time) has been
implemented.
• 1 meter antenna receives full LRIT stream
• There are no re-occurring costs associated with LRIT
reception.
7. Current Spacecraft Status
• GOES-12 remains primary (75) for East
• GOES-11 has been transitioned as primary
West (135) spacecraft
• GOES-10 is positioned (60) for the South
American mission. Imagery operations began in
Nov 06
• GOES-9 was de-commissioned on 14 Jul 07
• GOES-13 was tested and placed in storage. It
was brought out of storage in July 07 for testing.
• GOES-O launch is scheduled for Summer 08.
8. Wallops Backup
• A second pilot remains active (channel 0)
at the WBU. The frequency is 401.7MHz.
• Wallops staff has remote control/status
capability of the WBU systems including
the pilot from Wallops.
9. DOMSAT Frequency Change
• The final transition to the new DOMSAT
frequency was June 13, 2007
• New frequency is 11,817.5Mhz.
• All other parameters (pointing angles, modem
settings, etc.) remain the same.
• Transition went smoothly.
10. DAPS
• Wallops has experienced data base issues (mid
November). Updates had to be re-entered.
• DAPS-B is now primary and has been since
November.
• Still supporting telnet (205.156.2.173/178)
• Working with OSDPD in the migration to 300/1200
baud channels.
• The Weather Service link has been transitioned to
the MPLS (8 Jan 08). We are seeing fewer
dropouts.
• Wallops Operations verifies the DCS pilot daily.
• No problems during the end-of-year transition.
11. GOES-12 Anomaly
• A North/South maneuver in November
resulted in an anomaly of GOES-12.
• A leak in a thruster line resulted in the
spacecraft being out of service for more
than a week.
• During this time GOES-10 was used for
DCPR
• In addition EMWIN and LRIT products were
transmitted through GOES-10
12. DADDS
• The DCS Alternate Data Distribution System
(DADDS) provides a separate means to
distribute data from the demods should DAPS A
& B fail.
• Testing was conducted at Wallops Oct 07.
• The system has been used on an as-needed
basis.
• Currently DADDS will support NWSTG and
DOMSAT traffic.
• Training for Wallops Operations staff is
scheduled for the week of 4 Feb.
13. Multiple Data Sources
• We currently support-
– DOMSAT (primary)
– LRGS (cdadata, cdabackup, drot)
– Telnet (data base updates)
– LRIT
– NWS Telecommunications Gateway
– Dial-in
