NOAA COMMAND AND DATA ACQUISITION STATION

WCDAS Numbers

• DCS Help Desk at 757-824-7450 or 7451• Contact Phil Whaley at (757) 824-7331 or Al

McMath at (757) 824-7316•Travis Thornton 757 824-7450

Wallops LRGS Configuration• No real changes to the LRGS• We continue to use version 7.0 as the standard• The cdadata server is considered the primary LRGS, ingesting

data from the DCS demods & the cdabackup server. • The cdabackup server is considered the secondary LRGS,

ingesting data from the DCS demods & the EDDN server. • The drot should be considered a troubleshooting tool to verify

the DOMSAT downlink. • Accounts are built through NOAA and shared with USGS• Wallops LRGS interface with those at NSOF and EDDN to

maintain a complete record.

Wallops LRGS Configuration• Analysis by Microcom showed that EDDN and NSOF were receiving

99.5% of the data that is received at Wallops.• No real changes to the LRGS configuration since the last meeting• 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)

LRIT Status

• Files built and transmitted every 30 seconds• Wallops is working with OSDPD to use the backup at

Wallops during periods of outages.• The OSDPD failover would be manual – not automatic• The DCS component of LRIT is transferred from Wallops to

Suitland (via Internet) and then back to Wallops (via T-1). • 1 meter antenna receives full LRIT stream• There are no re-occurring costs associated with LRIT

reception.• Available throughout the hemisphere at no charge.

GOES EAST GOES WEST

Wallops TelComm Interface

LRIT WestPTP

Domain 5

GOES EastRF Uplink

Wallops CDA StationLow Rate Information Transmission (LRIT)

Service Level

Philip WhaleyWallops CDA11 June 2008

GOES WestRF Uplink

LRIT EastPTP

Domain 5

Suitland TelComm Interface

East LRITData Quality

Monitor

1.2 meter 1.2 meter

Domain 4OSDPD Suitland

GOES Data Collection

System (DCS)

The OSDPD facility interleaves several products together to

form the LRIT stream.

NWSSilver Spring

EMWIN

OSDPDSuitland

GOES East ImageryGOES West Imagery

-LRIT Imagery-EMWIN Subset

-DCS Data-Admin Ops Messages

West LRITData Quality

Monitor

Wallops CDASDCS Data

DCS Data

DCS Data

Wallops sends GOES DCS data to the Suitland Domain 4 processor, via Internet, where it is interleaved with the NWS EMWIN data, the Imagery data and Admin messages to form the LRIT Product.

TelcommInterface

Legend:Blue = Individual ProductsRed = LRIT Service

T1

Inte

rne

t

-GOES East Imagery-GOES West Imagery

-EMWIN Subset-DCS Data

-Admin Ops Messages

GOES EAST GOES WEST

Cat-5 Port Network Hub

LRIT West PTPDomain 5

CISCO 2610 RouterPOES Rack 24A0

GOES EastRF Uplink

Wallops CDASGOES Low Rate Information Transmission

(LRIT)Rack Level

Philip WhaleyWallops CDA16 June 2008

GOES WestRF Uplink

BPSK ModulatorAgilent Signal Generator

Model E4430B

BPSK ModulatorAgilent Signal Generator

Model E4430B

LRIT East PTPDomain 5

GOES TIFDS Rack 5AZ1

Data

73 MHz IFLRIT East

Wallops Comm Interface

Telcom Room

1.2 meter1.2 meter

1691 MHzDownlink

ESPCNSOF Suitland

GOES LRITRack 16AZ3

The East receiver sends the LRGS an

acknowledgement of DCS file reception to close the loop on the LRGS retransmission

feature.

The filter ensures that the “harmonic

rich” modulator doesn’t interfere with other GOES

services.

LRIT is a satellite specific service

GOES East LRITGOES West LRIT

2033 MHzUplink

73 MHz IFLRIT West

137.5 MHz IF

2033 MHzUplink

2met! DSR II West Receiver

West Receive ProcessorPC

Min

i Circ

uit

Mod

el N

BP

-70

BPFilter

Min

i Circ

uit

Mod

el N

BP

-70

BPFilter

2met! DSR IIEast Receiver

East Receive ProcessorPC

4 Port Control & Monitor KVM

Clock ClockClockClock Data

GOES EMWIN Rack 26A4

EMWIN Reciever

AC AC The Bias T provides

15 VDC to the antenna LNB and blocks DC to

the receiver.

Bias TBias T

NO

AA

500

4D

CS

LA

N

GOES DCS Rack 46A1

CDADATALRGS

The LRGS Generates DCS LRIT files and sends them to the ESPC via the Internet.

1691 MHzDownlink

137.5 MHz IF

Red line is transmit pathGreen line is receive path

Verizon BusinessCkt MGBH5L040001

GOES EAST

GOES WEST

Wallops TelComm Interface

Prime LRIT WestPTP

Domain 5

GOES EastRF Uplink

Wallops CDA StationLow Rate Information Transmission (LRIT)

Primary and Backup Plan

Philip WhaleyWallops CDA19 Feb 2010

GOES WestRF Uplink

Prime LRIT East PTP

Domain 5

Suitland TelComm Interface

East LRITData Quality

Monitor

1.2 meter

1.2 meter

Suitland OSDPDLRIT Domains 2-4

GOES Data Collection

System (DCS)

NWSSilver Spring

Suitland OSDPDDomains 2-3

GOES East ImageryGOES West Imagery

-LRIT Imagery-EMWIN Subset

-DCS Data-Admin Ops Messages

West LRITData Quality

Monitor

Wallops CDAS

DCS Data

Wallops sends GOES DCS data to the Suitland OSDPD Domain processors, via Internet, where it is interleaved with the NWS EMWIN data, the Imagery data and Admin messages to form the Primary LRIT Product.

TelcommInterface

Legend:Blue = Individual ProductsRed = LRIT Service

T1Internet

-GOES East Imagery-GOES West Imagery

-EMWIN Subset-DCS Data

-Admin Ops Messages

Backup LRIT EastPTP

Domain 5

Backup LRIT WestPTP

Domain 5

Wallops OBFFiber Interface

OBF LRIT Domains 2-4

NWSSilver Spring

Juniper Switch

OBFFiber Interface

DCS DataEMWIN

EM

WIN

DC

S D

ata

DCS Data

EMWIN

EMWIN

DCS Data

Wallops sends GOES DCS data and EMWIN to the OSDPD Backup Facility (OBF) Domain processors, via fiber runs, where it is interleaved with the Imagery data and Admin messages to form the Backup LRIT Product.

LRIT EastLRIT East

Wallops OBF

LRIT WestLRIT West

LRIT

Eas

t

LRIT

Eas

t

LRIT

Wes

t

LRIT

Wes

t

Spacecraft Constellation• GOES-10 de-commissioned in Dec 2009 • GOES-13 is prime East S/C @ 75 deg West • GOES-11 is prime West S/C @ 135 deg West

– We did not have to use GOES-13 for DCS/LRIT/EMWIN during recent eclipse events.

– GOES-11 has only one functioning command receiver– Currently scheduled for decommissioning - Dec 2011– Replacement s/c is TBD (GOES-14 or 15???)

• GOES-12 supporting the South Americans @ 60 deg West• GOES-12 is scheduled for de-commissioning in Dec 2013• No decision on supporting South America after Dec 2013

Spacecraft Constellation• GOES-14 is in storage but we are using the SXI instrument @

105 deg West • GOES-15 is in storage @ 89.5 deg West

Wallops Backup

• A second pilot remains active (channel 0) at the WBU. The frequency is 401.7MHz.

• LRIT and EMWIN equipment is at WBU & FCDAS still waiting for connectivity to OSDPD – multicast issue.

DAPS/DADDS

• DADDS on-line since Jan 2010.• IT Security Certification and Accreditation

completed on Mar 31 2010– We have a 3 year Authority To Operate– This includes the WCDAS and the NSOF

• Three test transmitters Apr 2010. Six units for three antennas. One unit serves as the pilot transmitter.

• NWSTG TCP/IP Testing currently underway.• Pilot/DCPC receive antennas installation delayed.

Site @ WCDAS site is still being determined.

DOMSAT Status

• DCS moved from AMC 4 to SES 1 – 9 Jul 2011 • Downlink moved from transponder 6 to

transponder 14 of satellite SES 1 – 1 Nov 2011– The new frequency is 11987.2MHz.

• The current contract with SES World Skies, formerly Americom Government Services (AGS), expires September 2011 (Option period-9).

DOMSAT Status

• DCS operations will be failed-over to the backup site at NSOF starting on May 16.

• This is being done to support the reconfiguration of the Wallops SES equipment.

DOMSAT Service• Current DOMSAT services expire on 31 Aug 2011.