McMurdo Ground Station Workshop NPOESS Direct Readout March 10, 2004

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McMurdo Ground Station Workshop NPOESS Direct
ReadoutMarch 10, 2004
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DRL Roadmap to NPP and Beyond
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NPOESS Program Schedule
2002 AO Contract Award 2003 NPP Critical
Design Review 2005 NPOESS Preliminary
Design Review 2006 NPOESS Critical Design
Review NPP Ground Readiness NPP Launch Field
Terminal Technical Specification 2007 NPP HRD
Demonstration 2010 NPOESS Ground
Readiness NPOESS C-1 Launch NPOESS HRD/LRD
Demonstration
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Direct Readout Software Production Schedule
You are here
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Fully Integrated System Architecture for Optimal
Mission Performance
TDRSS
TDRSS
GPS
SpaceSegment
NPOESSSpacecraft
NPP (1030)
ADCS
1330
1730
2130
Residuals
SARSAT
Svalbard Primary TC NPP SMD
C3Segment
White Sands Complex LEO A Backup TC
HRD Field Terminal
LRD FieldTerminal
FieldTerminal Segment
CLASS
SDS
ADS
NESDIS
AFWA
FNMOC
NAVO
15 Globally DistributedReceptor Sites
Interconnectedby Commercial Fiber

Patent Pending
Interface Data Processing Segment
Launch SupportSegment
MMC at Suitland Flight Operations Team
Enterprise Management Mission Management
Satellite Operations Data Monitoring
Recovery
Schriever MMC Contingency Operations Team
One full set resides in each of the 4
Centrals
Data Handling Node, Front End Processor
One full set resides in each of the 4 Centrals
NPOESS Stored Mission Data
NPP Stored Mission Data
Command and Telemetry
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CONOPS Delivers Timely and Reliable Data
1. Sense Phenomena
2. Downlink Mission Data
TSKY
TOBS
TATM

LATM
LCL
LRN
FOG
High Rate Data Low Rate Data Direct Readout
Terminals
eij
Monitor and Control Satellites and Ground Elements

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NPOESS / NPP Sensor Manifest
1330 - NPOESS
1730 - NPOESS
2130 - NPOESS
1030 - NPP
VIIRS
VIIRS
VIIRS
VIIRS
CMIS
CMIS
CMIS
CrIS
CrIS
CrIS
ATMS
ATMS
ATMS
SESS
GPSOS
SS
SS
SS
SARSAT
SARSAT
SARSAT
ADCS
ADCS
CERES
ERBS
OMPS
OMPS
ALT
APS
TSIS
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Field Terminals are an integral part of NPOESS
SMD
SMD
Centrals
Centrals
C3S
C3S
IDP
IDP
Space Vehicle 3
Space Vehicle 3
Users
_at_
_at_
Users
C3S
C3S
CONUS
CONUS
SMD
Centrals
Centrals
SMD
DHN
Gateways
DHN
Gateways
Ground
Ground
Space Vehicle 2
Space Vehicle 2
FEP
FEP
(4x)
(4x)
Science
Science
Receptor
Receptor
Space Vehicle 1
Space Vehicle 1
(_at_ IDPS)
(_at_ IDPS)
Users
Users
Mission
Mission
Ground
Ground
Bus
Bus
Sensors
Sensors
Management
Management
Station
Station
Deliver Data
Deliver Data
Center
Center
IDPS
IDPS
Products
Products
Stored Mission Data flow for
Stored Mission Data flow for
Centrals, Science Users
Centrals, Science Users
HRD
HRD
Regional
Field
Field
LRD
LRD
Terminal
Terminal
Users
Users
Software
Software
Deliver Data
Deliver Data
Products
Products
Field Terminals (LRD, HRD)
Field Terminals (LRD, HRD)
HRD, LRD Data flow for
HRD, LRD Data flow for
SARSAT, ADCS
SARSAT, ADCS
Tactical Users
Regional Users
Terminals
Terminals
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Field Terminal Segment Architecture
NPOESS HRD or LRD
NPP HRD

Signal Processing Subsystem (SPS)
Mission Application Subsystem (MAS)
Data Processor Element (DPE)
FT Technical Specification
Field Terminal Segment

Internet
Mission Support Data Server
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NPOESS Field Terminal Proposed Link Parameters
Parameter High Rate Data Low Rate Data Carrier
Frequency 7812 MHz 1704 MHz Max Occupied 30.8
MHz 12.0 MHz Bandwidth Channel Data Rate 40
Mbps 11.64 Mbps Ground Aperture Size lt 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
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NPOESS Stored Mission Data (SMD)Environmental
Data Records (EDRs)
Atm Vertical Temp Profile
Cloud Top Height
Ozone Total Column/Profile
Atm Vertical Moisture Profile
Cloud Top Pressure
Precipitable Water
Cloud Top Temperature
Precipitation Type/Rate
Sea Surface Temperature
Sea Surface Winds
Downward LW Radiance (Sfc)
Pressure (Surface/Profile)
Soil Moisture
Downward SW Radiance(Sfc)
Sea Ice Characterization
Imagery
Electric Field
Sea Surface Height/Topo.
Electron Density Profile
Snow Cover/Depth
Active Fires
Aerosol Optical Thickness
Energetic Ions
Solar Irradiance
Aerosol Particle Size
Geomagnetic Field
Supra-Thermal-Auroral Part.
Aerosol Refractive Index
Ice Surface Temperature
Surface Type
Surface Wind Stress
Albedo (Surface)
In-situ Plasma Fluctuations
Auroral Boundary
In-situ Plasma Temperature
Suspended Matter
Ionospheric Scintillation
Auroral Energy Deposition
Total Water Content
Auroral Imagery
Medium Energy Charged Particles
Vegetation Index
Cloud Base Height
Land Surface Temperature
Cloud Cover/Layers
Net Heat Flux
Cloud Effective Particle Size
Net Solar Radiation (TOA)
Cloud Ice Water Path
Neutral Density Profile
Cloud Liquid Water
Ocean Color/Chlorophyll
Cloud Optical Thickness
Ocean Wave Characteristics
Cloud Particle Size/Distribution
Outgoing LW Radiation (TOA)
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NPOESS High Rate Data (HRD)Environmental Data
Records (EDRs)
Atm Vertical Temp Profile
Cloud Top Height
Ozone Total Column/Profile
Atm Vertical Moisture Profile
Cloud Top Pressure
Precipitable Water
Cloud Top Temperature
Precipitation Type/Rate
Sea Surface Temperature
Sea Surface Winds
Downward LW Radiance (Sfc)
Pressure (Surface/Profile)
Soil Moisture
Downward SW Radiance(Sfc)
Sea Ice Characterization
Imagery
Electric Field
Sea Surface Height/Topo.
Electron Density Profile
Snow Cover/Depth
Active Fires
Aerosol Optical Thickness
Energetic Ions
Solar Irradiance
Aerosol Particle Size
Geomagnetic Field
Supra-Thermal-Auroral Part.
Aerosol Refractive Index
Ice Surface Temperature
Surface Type
Surface Wind Stress
Albedo (Surface)
In-situ Plasma Fluctuations
Auroral Boundary
In-situ Plasma Temperature
Suspended Matter
Ionospheric Scintillation
Auroral Energy Deposition
Total Water Content
Auroral Imagery
Medium Energy Charged Particles
Vegetation Index
Cloud Base Height
Land Surface Temperature
Cloud Cover/Layers
Net Heat Flux
Cloud Effective Particle Size
Net Solar Radiation (TOA)
Cloud Ice Water Path
Neutral Density Profile
Cloud Liquid Water
Ocean Color/Chlorophyll
Cloud Optical Thickness
Ocean Wave Characteristics
Cloud Particle Size/Distribution
Outgoing LW Radiation (TOA)
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NPOESS Low Rate Data (LRD)Environmental Data
Records (EDRs)
Atm Vertical Temp Profile
Cloud Top Height
Ozone Total Column/Profile
Atm Vertical Moisture Profile
Cloud Top Pressure
Precipitable Water
Cloud Top Temperature
Precipitation Type/Rate
Sea Surface Temperature
Sea Surface Winds
Downward LW Radiance (Sfc)
Pressure (Surface/Profile)
Soil Moisture
Downward SW Radiance(Sfc)
Sea Ice Characterization
Imagery
Electric Field
Sea Surface Height/Topo.
Electron Density Profile
Snow Cover/Depth
Active Fires
Aerosol Optical Thickness
Energetic Ions
Solar Irradiance
Aerosol Particle Size
Geomagnetic Field
Supra-Thermal-Auroral Part.
Aerosol Refractive Index
Ice Surface Temperature
Surface Type
Surface Wind Stress
Albedo (Surface)
In-situ Plasma Fluctuations
Auroral Boundary
In-situ Plasma Temperature
Suspended Matter
Ionospheric Scintillation
Auroral Energy Deposition
Total Water Content
Auroral Imagery
Medium Energy Charged Particles
Vegetation Index
Cloud Base Height
Land Surface Temperature
Cloud Cover/Layers
Net Heat Flux
Cloud Effective Particle Size
Net Solar Radiation (TOA)
Cloud Ice Water Path
Neutral Density Profile
Cloud Liquid Water
Ocean Color/Chlorophyll
Cloud Optical Thickness
Ocean Wave Characteristics
Cloud Particle Size/Distribution
Outgoing LW Radiation (TOA)
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Excellent EDR Performance for HRD
Attributes better than TRD threshold
Attributes at TRD threshold
Attributes below TRD threshold
70 Total 9 Better 0 Below
126 Total 27 Better 2 Below
Land EDRs (5)
Key EDRs (6)
98 Total 11 Better 2 Below
Ocean Water EDRs (7)
155 Total 13 Better 1 Below
Atmospheric EDRs (9)
Space Environment EDRs (13)
149 Total 43 Better 2 Below
197 Total 17 Better 2 Below
Cloud EDRs (10)
Total attributes 861
120 attributes above, 738 at, 10 below threshold
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LRD Performance Approaches Objective Levels
Attributes at or above TRD objective
Attributes between TRD threshold objective
No attributes are below TRD threshold
High Priority EDRs (8)
Lower Priority EDRs (15)
164 Total Attributes 121 Meet Objective
Supporting EDRs (5)
249Total Attributes 143 Meet Objective
72Total Attributes 41 Meet Objective
Total attributes 485
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Our LRD Approach Balances Performance and
Provides Flexibility
Limited LRD Bandwidth
Selection of compression applied to selected
VIIRS mission data for increased mission data
throughput in downlink
1330 2130
1730
VIIRS
CMIS
CrIS
Programmable LRD downlink provides flexibility
for the future
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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

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Field Terminal Data Flow
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All EDR Production Timing for Field Terminal
Configurations
15 Minute Requirement
(3 S/C over 3 ½ days)
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Field Terminal Data Processor Element Software
Design

• Open 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

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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

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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

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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
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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

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NPOESS Points of Contact

• Field Terminal IPT
• John Overton [phone]
• Bill Munley [phone]
• Joe Mulligan [phone]
• John van de Wouw [phone]
• NPOESS Websites
• http//www.npoess.noaa.gov
• http//npoesslib.ipo.noaa.gov/ (electronic
  bulletin board)