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1
McMurdo Ground Station Workshop
NPOESS Direct Readout
March 10, 2004
McMurdo Ground Station Workshop
NPOESS Direct Readout
March 10, 2004
3
Reliable and timely collection, delivery, and processing of quality environmental data
Reliable and timely collection, delivery, and processing of quality environmental data
NPOESS Program Schedule2002A&O Contract Award
2003 NPP Critical Design Review 2005 NPOESS Preliminary Design Review 2006NPOESS Critical Design ReviewNPP Ground ReadinessNPP LaunchField Terminal Technical Specification
2007NPP HRD Demonstration
2010 NPOESS Ground ReadinessNPOESS C-1 LaunchNPOESS HRD/LRD Demonstration
4
1/041/03 12/11
1/05 1/06 1/07 1/08 1/09 1/10 1/11
8/03Build 1.1
9/04Build 1.2
6/05Build 1.3
2/06Build 1.4
10/06NPP Launch
4/07Build 2.1
4/07NPP Demo
4/08Build 2.2
1/09Build 2.3
7/07FTS
FAT (2.1)
11/09NPOESS C1
Launch
12/09FTS NPOESS CM
Release
6/11NPOESS C2
Launch
5/05HRD/LRDTechnical
Specifications 7/08FTS
FAT (2.2)
4/09FTS
FAT (2.3)
You are here
Direct Readout Software Production Schedule
5
NESDISAFWAFNMOCNAVO
SpaceSegment
C3SegmentC3Segment
1330 1730 2130
FieldTerminal SegmentFieldTerminal Segment
GPS
CLASS
NPOESS Stored Mission Data
SvalbardPrimary T&CNPP SMD
SvalbardPrimary T&CNPP SMD
TDRSS
Residuals NPOESSSpacecraft
LaunchSupportSegment
LaunchSupportSegment
NPP (1030)
NPP (1030)
MMC at SuitlandFlight Operations Team• Enterprise Management• Mission Management• Satellite Operations• Data Monitoring & Recovery
White Sands ComplexLEO & A Backup T&C
White Sands ComplexLEO & A Backup T&C
TDRSS
ADCS
SARSAT
HRDField
Terminal
HRDField
Terminal
LRDField
Terminal
LRDField
Terminal
Schriever MMCContingency Operations Team
SDS
ADS
Data Handling Node, Front End ProcessorOne full set resides in each of the 4 Centrals
15 Globally DistributedReceptor Sites Interconnectedby Commercial Fiber
15 Globally DistributedReceptor Sites Interconnectedby Commercial Fiber
NPP Stored Mission Data Command and Telemetry
Interface Data Processing SegmentInterface Data Processing SegmentOne full set resides in each of the 4 CentralsOne full set resides in each of the 4 Centrals
Data MgtData MgtInfraInfra
IngestIngest
Cal/ValCal/Val
Proc
ess
Proc
e ss
Data DelData Del
Data MgtData MgtInfraInfra
IngestIngest
Cal/ValCal/Val
Proc
ess
Proc
e ss
Data DelData Del
Data MgtData MgtInfraInfra
IngestIngest
Cal/ValCal/Val
Proc
ess
Proc
e ss
Data DelData Del
Data MgtData MgtInfraInfra
IngestIngest
Cal/ValCal/Val
Proc
ess
Proc
e ss
Data DelData Del
* Patent Pending
*
5
Fully Integrated System Architecture for Optimal Mission Performance
6 6
1. Sense Phenomena 2. Downlink Mission Data
Monitor and Control Satellites and Ground Elements
T
O
B
S
L
A
T
M
L
C
L
FOG
L
R
N
TATM
TSKY
ei
j
MMC (Suitland)
Schriever MMC
High Rate Data & Low Rate Data Direct Readout Terminals
CONOPS Delivers Timely and Reliable Data
7
NPOESS / NPP Sensor Manifest
1330 - NPOESS 1730 - NPOESS 2130 - NPOESS1030 - NPP
VIIRSVIIRS
CMISCMIS
CrISCrIS
ATMSATMS
SESSSESS
GPSOSGPSOS
SSSS
SARSATSARSAT
ADCSADCS
ERBSERBS
OMPSOMPS
VIIRSVIIRS
CMISCMIS
VIIRSVIIRS
CMISCMIS
SSSS
SARSATSARSAT
ADCSADCS
ALTALT
TSISTSIS
VIIRSVIIRS
CrISCrIS
ATMSATMS
SSSS
CrISCrIS
ATMSATMS
APSAPS
SARSATSARSAT
CERESCERES
OMPSOMPS
8
Field Terminals are an integral part of NPOESS
Space Vehicle 2
Stored Mission Data flow for Centrals, Science Users
C3SDHN &
FEP(@ IDPS)
IDP@
Centrals
C3S
Sensors Bus
Space Vehicle 1
IDPS
Centrals Users
Science Users
SMD
Field Terminals (LRD, HRD)
FieldTerminalSoftware
HRD, LRD Data flow for Tactical Users
Regional Users
SARSAT, ADCS Terminals
CONUS Gateways
(4x)
Deliver DataProducts
SMD
LRD
HRD
Space Vehicle 3Ground
Receptor
GroundStation
Mission Management Center
Deliver DataProducts
Space Vehicle 2
Stored Mission Data flow for Centrals, Science Users
C3SDHN &
FEP(@ IDPS)
IDP@
Centrals
IDP@
Centrals
C3S
Sensors Bus
Space Vehicle 1
IDPS
Centrals Users
Science Users
SMD
Field Terminals (LRD, HRD)
FieldTerminalSoftware
FieldTerminalSoftware
HRD, LRD Data flow for Regional Users
Users
SARSAT, ADCS Terminals
CONUS Gateways
(4x)
Deliver DataProducts
SMD
LRD
HRD
Space Vehicle 3Ground
Receptor
GroundStation
Mission Management Center
Deliver DataProducts
9
Field Terminal Segment Architecture
SignalProcessingSubsystem
(SPS)
Mission ApplicationSubsystem
(MAS)
Data ProcessorElement
(DPE)
NPOESS HRD or LRDNPP HRD
FT Technical Specification
Internet
Mission SupportData Server
Field Terminal Segment
10
NPOESS Field Terminal Proposed Link Parameters
Parameter High Rate Data Low Rate DataCarrier Frequency 7812 MHz 1704 MHz
Max Occupied 30.8 MHz 12.0 MHzBandwidth
Channel Data Rate* 40 Mbps 11.64 Mbps
Ground Aperture Size <= 2.0 meters 1.0 meters
Minimum Elevation Angle 5.0 degrees 5.0 degrees
* Includes all CCSDS overhead, Reed-Solomon forward error correction, and convolutional encoding
11
EDRs with Key Performance Parameters
VIIRSCMISCrIS/ATMSOMPSSESGPSOSERBSTSISALTAPS
2519
31
1325134
NPOESS Stored Mission Data (SMD)Environmental Data Records (EDRs)
Atm Vertical Moisture ProfileAtm Vertical Temp Profile
Imagery
Sea Surface TemperatureSea Surface Winds
Soil Moisture
Active Fires
Aerosol Particle SizeAerosol Refractive IndexAlbedo (Surface)Auroral BoundaryAuroral Energy DepositionAuroral ImageryCloud Base HeightCloud Cover/LayersCloud Effective Particle SizeCloud Ice Water PathCloud Liquid Water
Cloud Optical ThicknessCloud Particle Size/Distribution
Cloud Top Height
Aerosol Optical Thickness
Cloud Top Pressure
Cloud Top Temperature Downward LW Radiance (Sfc)Downward SW Radiance(Sfc)
Electric FieldElectron Density ProfileEnergetic Ions
Geomagnetic Field Ice Surface TemperatureIn-situ Plasma FluctuationsIn-situ Plasma Temperature
Ionospheric ScintillationMedium Energy Charged ParticlesLand Surface Temperature
Net Heat FluxNet Solar Radiation (TOA)Neutral Density ProfileOcean Color/ChlorophyllOcean Wave CharacteristicsOutgoing LW Radiation (TOA)
Ozone; Total Column/ProfilePrecipitable Water
Precipitation Type/Rate Pressure (Surface/Profile)Sea Ice CharacterizationSea Surface Height/Topo.Snow Cover/DepthSolar Irradiance
Supra-Thermal-Auroral Part.Surface TypeSurface Wind StressSuspended MatterTotal Water ContentVegetation Index
12
EDRs with Key Performance Parameters
VIIRSCMISCrIS/ATMSOMPSSESGPSOSERBSTSISALTAPS
2519
31
1325134
NPOESS High Rate Data (HRD)Environmental Data Records (EDRs)
Atm Vertical Moisture ProfileAtm Vertical Temp Profile
Imagery
Sea Surface TemperatureSea Surface Winds
Soil Moisture
Active Fires
Aerosol Particle SizeAerosol Refractive IndexAlbedo (Surface)Auroral BoundaryAuroral Energy DepositionAuroral ImageryCloud Base HeightCloud Cover/LayersCloud Effective Particle SizeCloud Ice Water PathCloud Liquid Water
Cloud Optical ThicknessCloud Particle Size/Distribution
Cloud Top Height
Aerosol Optical Thickness
Cloud Top Pressure
Cloud Top Temperature Downward LW Radiance (Sfc)Downward SW Radiance(Sfc)
Electric FieldElectron Density ProfileEnergetic Ions
Geomagnetic Field Ice Surface TemperatureIn-situ Plasma FluctuationsIn-situ Plasma Temperature
Ionospheric ScintillationMedium Energy Charged ParticlesLand Surface Temperature
Net Heat FluxNet Solar Radiation (TOA)Neutral Density ProfileOcean Color/ChlorophyllOcean Wave CharacteristicsOutgoing LW Radiation (TOA)
Ozone; Total Column/ProfilePrecipitable Water
Precipitation Type/Rate Pressure (Surface/Profile)Sea Ice CharacterizationSea Surface Height/Topo.Snow Cover/DepthSolar Irradiance
Supra-Thermal-Auroral Part.Surface TypeSurface Wind StressSuspended MatterTotal Water ContentVegetation Index
13
EDRs with Key Performance Parameters
VIIRSCMISCrIS/ATMSOMPSSESGPSOSERBSTSISALTAPS
2519
31
1325134
NPOESS Low Rate Data (LRD)Environmental Data Records (EDRs)
Atm Vertical Moisture ProfileAtm Vertical Temp Profile
Imagery
Sea Surface TemperatureSea Surface Winds
Soil Moisture
Active Fires
Aerosol Particle SizeAerosol Refractive IndexAlbedo (Surface)Auroral BoundaryAuroral Energy DepositionAuroral ImageryCloud Base HeightCloud Cover/LayersCloud Effective Particle SizeCloud Ice Water PathCloud Liquid Water
Cloud Optical ThicknessCloud Particle Size/Distribution
Cloud Top Height
Aerosol Optical Thickness
Cloud Top Pressure
Cloud Top Temperature Downward LW Radiance (Sfc)Downward SW Radiance(Sfc)
Electric FieldElectron Density ProfileEnergetic Ions
Geomagnetic Field Ice Surface TemperatureIn-situ Plasma FluctuationsIn-situ Plasma Temperature
Ionospheric ScintillationMedium Energy Charged ParticlesLand Surface Temperature
Net Heat FluxNet Solar Radiation (TOA)Neutral Density ProfileOcean Color/ChlorophyllOcean Wave CharacteristicsOutgoing LW Radiation (TOA)
Ozone; Total Column/ProfilePrecipitable Water
Precipitation Type/Rate Pressure (Surface/Profile)Sea Ice CharacterizationSea Surface Height/Topo.Snow Cover/DepthSolar Irradiance
Supra-Thermal-Auroral Part.Surface TypeSurface Wind StressSuspended MatterTotal Water ContentVegetation Index
14
Excellent EDR Performance for HRD
120 attributes above, 738 at, 10 below threshold
Key EDRs (6)
Atmospheric EDRs (9)
Cloud EDRs (10)
Land EDRs (5)
Ocean Water EDRs (7)
Space Environment
EDRs (13)
126 Total27 Better2 Below
155 Total13 Better1 Below
197 Total17 Better2 Below
70 Total9 Better0 Below
98 Total11 Better2 Below
149 Total43 Better2 Below
Attributes better than TRD threshold
Attributes at TRD threshold
Attributes below TRD threshold
Total attributes = 861
128 attributes above, 724 at, 9 below threshold
15
LRD Performance Approaches Objective Levels
164 Total Attributes121 Meet Objective
Attributes at or above TRD objectiveAttributes between TRD threshold & objectiveNo attributes are below TRD threshold
High Priority EDRs (8) Lower Priority EDRs (15)
Supporting EDRs (5)
72Total Attributes41 Meet Objective
249Total Attributes143 Meet Objective
Total attributes = 485
305 attributes above, 180 at, 0 below threshold
16
Our LRD Approach Balances Performance and Provides Flexibility
Limited LRD Bandwidth
3.88 Mbps
Programmable LRD downlink Programmable LRD downlink provides flexibility for the futureprovides flexibility for the futureProgrammable LRD downlink Programmable LRD downlink
provides flexibility for the futureprovides flexibility for the future
1330 & 2130 1730
-
500,000
1,000,000
1,500,000
2,000,000
2,500,000
3,000,000
3,500,000
4,000,000
1 2 3 4
VIIRS**
CMIS*
CrIS*
ATMS*
Margin
Ancillary*
ALT
ADCS
DMDM
TOD
Encryption
CCSDS-
500,000
1,000,000
1,500,000
2,000,000
2,500,000
3,000,000
3,500,000
4,000,000
1 2 3 4
CrIS
CMIS
VIIRS
Selection of compression applied to selected VIIRS mission data for increased mission data throughput in downlink
-
500,000
1,000,000
1,500,000
2,000,000
2,500,000
3,000,000
3,500,000
4,000,000
1 2 3 4
17
Key Field Terminal Performance Requirements
Key performance requirements govern the attributes of the aperture, RF front-end and demodulator• “Processing” requirements (e.g., decoding) can be viewed as
“functional” requirements
LRD aperture requirements: • 1-meter diameter
Aperture/RF front-end requirements: • G/T, passband amplitude and phase response (components of
implementation loss)
RF front-end/demodulator requirements:• Implementation loss (covering passband response, phase noise,
demodulator performance with respect to theory, et al)
Link budget entries serve as starting points for these requirement values• Requirements are not independent, trade-offs exist
18
Field Terminal Data Flow
Signal Processing Subsystem
Data Processor Element
MissionApplicationSubsystem
Post ProcessingVisualization
Tracking Antenna
LNADownConverter/
FilterReceiver/
DemodulatorBit
SynchronizerViterbi
Decoder
CCSDS Processing
FrameSynchronizer
CADUs
Derandomization
Reed SolomonDecoding
VCDU Processing
Ingest
GranulateHRD/LRD MissionData and MissionSupport DataGenerate RDRs
Data ManagementStore and Retrieve xDRs
Data Delivery
Convert xDRs toHDF5, Deliver toMAS
Infrastructure
Work Flow Management
APs
ProcessingGenerate SDRs, TDRs,EDRs
CVCDUs
VCDUs
AES DecryptionVCDUs
MissionSupport
DataServer
MSD fornetwork
connectedField
Terminals
Downlink FromSpacecraft
19
All EDR Production Timing for Field Terminal Configurations
15 Minute Requirement
(3 S/C over 3 ½ days)
20
Field Terminal Data Processor Element Software DesignOpen Systems Group standards compliance at interfaces minimizes configurations
Programmable LRD downlink favors 8 Priority EDRs
Onboard VIIRS data compression rates by APID for LRD
Flexible ancillary data approach • Dynamic ancillary data via satellite downlink • NPOESS Mission Support Data Server via Internet access
21
FTS EDR Performance
HRD EDR Performance• 99% of performance attributes meet or exceed performance thresholds• Latency requirements achievable with current COTS workstations • Designed to recognize missing channels and ancillary data• Lossless RICE compression on VIIRS
LRD EDR Performance• 0.8 km resolution imagery and programmable downlink• Produces 8 high priority EDRs at or near LRD objective levels• Produces 15 lower priority EDRs and required predecessor EDRs• Designed to recognize missing channels and ancillary data• Lossless and Lossy JPEG2000 compression on selected APIDs
22
Field Terminal Ancillary Data Approach
Dynamic Ancillary Data contained within LRD and HRD downlinks to meet specified performance levels• Data for six elevation levels from the NWP Forecast model
- Temperature- Humidity- Surface Pressure- Standard Pressure Levels- Wind Speed, Wind Direction- Precipitable Water
• For SESS EDR production- Effective Sunspot Number and Global Geomagnetic Kp
NPOESS Mission Support Data Server, accessible via Internet• Contains full set of Official Ancillary data• Contains full set of NPOESS Auxiliary data• Contains System status bulletins• Satellite vector information for antenna pointing and signal acquisition
23
Ancillary Data DownlinkGraphical Representations
• 16 points spaced 200 kilometers apart at right angles to the ground track
• Completely covers the area viewed by all sensors
• Successive lines 200 kilometers apart
• Each line transmitted twice to ensure receipt by the ground
Path of the satellite
24
What is NPOESS planning?
NPOESS responsible for building software and terminal specifications, but not for building terminals• NPOESS to publish specifications and design trade information• NPOESS DPE software available on the program website for download
NPOESS to deliver data to users world-wide in accordance with U.S. National data policy• Mission data downlinked around the world at no cost to receivers• Data encryption/data denial capability exists for U.S. National defense
- Denial can be done on a world-wide or geographic basis