1 Satellite Direct Readout Conference for the Americas NPOESS Field Terminal Segment December 11, 2002

2 Reliable and timely collection, delivery, and processing of quality environmental data Program Schedule 2002 A&O Contract Award 2003 NPP Critical Design Review NPOESS Preliminary Design Review 2004 NPOESS Critical Design Review 2005 NPP Ground Readiness Field Terminal H/W Procurement Specification 2006 NPP Launch NPP HRD Demonstration 2008 NPOESS Ground Readiness 2009 NPOESS C-1 Launch NPOESS HRD/LRD Demonstration

3 NESDISAFWAFNMOCNAVO System Architecture – Fully Integrated for Optimal Mission Performance Space Segment C3 Segment Field Terminal Segment GPS CLAS S NPOESS Stored Mission Data Svalbard Primary T&C NPP SMD Svalbard Primary T&C NPP SMD TDRSS Residuals NPOESS Spacecraft Launch Support Segment Launch Support Segment NPP (1030) MMC at Suitland Flight Operations Team Enterprise Management Mission Management Satellite Operations Data Monitoring & Recovery White Sands Complex LEO & A Backup T&C White Sands Complex LEO & A Backup T&C TDRSS ADCS SARSAT HRD Field Terminal HRD Field Terminal LRD Field Terminal LRD Field Terminal Schriever MMC Contingency Operations Team SD S AD S Data Handling Node, Front End Processor One full set resides in each of the 4 Centrals 15 Globally Distributed Receptor Sites Interconnected by Commercial Fiber NPP Stored Mission Data Command and Telemetry Interface Data Processing Segment One full set resides in each of the 4 Centrals Data Mgt Infra Ingest Cal/Val Process Data Del Data Mgt Infra Ingest Cal/Val Process Data Del Data Mgt Infra Ingest Cal/Val Process Data Del Data Mgt Infra Ingest Cal/Val Process Data Del * Patent Pending * 3

4 CONOPS Delivers Timely and Reliable Data 4 1. Sense Phenomena2. Downlink Mission Data Monitor and Control Satellites and Ground Elements TOBSTOBS LATMLATM LCLLCL FO G LRNLRN T AT M T SK Y eijeij MMC (Suitland) Schriever MMC HRD and LRD Field Terminals

5 NPOESS / NPP Sensor Manifest NPOESS NPOESS NPOESS NPP VIIRS CMIS CrIS ATMS SESS GPSOS SS SARSAT ADCS ERBS OMPS VIIRS CMIS VIIRS CMIS SS SARSAT ADCS ALT TSIS VIIRS CrIS ATMS SS CrIS ATMS APS SARSAT CERES OMPS

6 Field Terminals are an integral part of NPOESS Space Vehicle 2 Stored Mission Data flow for Centrals, Science Users C3S DHN & FEP IDPS) Centrals C3S Sensors Bus Space Vehicle 1 IDPS Centrals Users Science Users SMD Field Terminals (LRD, HRD) Field Terminal Software HRD, LRD Data flow for Tactical Users Tactical Users SARSAT, ADCS Terminals CONUS Gateways (4x) Deliver Data Products SMD LRD HRD Space Vehicle 3 Ground Receptor Ground Station Mission Management Center Deliver Data Products Space Vehicle 2 Stored Mission Data flow for Centrals, Science Users C3S DHN & FEP IDPS) Centrals Centrals C3S Sensors Bus Space Vehicle 1 IDPS Centrals Users Science Users SMD Field Terminals (LRD, HRD) Field Terminal Software Field Terminal Software HRD, LRD Data flow for Tactical Users Tactical Users SARSAT, ADCS Terminals CONUS Gateways (4x) Deliver Data Products SMD LRD HRD Space Vehicle 3 Ground Receptor Ground Station Mission Management Center Deliver Data Products

7 Field Terminal Segment Architecture Data Processor Element FT Procurement Specifications

8 Field Terminal Procurement Specification Link Parameters Data Latency SMD HRD/LRD ThresholdObjective 128 attributes above, 724 at, 9 below threshold 305 attributes above, 180 at, 0 below threshold Data Quality SMD/HRD LRD ParameterNPOESS HRDNPOESS LRD Carrier Frequency7812 MHz or 7830 MHz1706 MHz command selectable Max Occupied 30.8 MHz8.0 MHz Bandwidth Channel Data Rate*40 Mbps7.76 Mbps Ground Aperture Size<= 2.0 meters1.0 meters Minimum Elevation Angle5.0 degrees5.0 degrees * Includes all CCSDS overhead, Reed-Solomon forward error correction, and convolutional encoding

9 EDRs with Key Performance Parameters HRD Environmental Data Records (50 EDRs) Cloud Top Pressure Cloud Top Temperature Downward Longwave Radiance (Sfc) Downward Shortwave Radiance (Sfc ) Electric Field Electron Density Profile Energetic Ions Geomagnetic Field Ice Surface Temperature In-situ Plasma Fluctuations In-situ Plasma Temperature Ionospheric Scintillation Medium Energy Charged Particles Land Surface Temperature Net Heat Flux Net Solar Radiation (TOA) Neutral Density Profile Ocean Color/Chlorophyll Ocean Wave Characteristics Outgoing Longwave Radiation (TOA) Ozone - Total Column/Profile Precipitable Water Precipitation Type/Rate Pressure (Surface/Profile) Sea Ice Characterization Sea Surface Height/Topography Snow Cover/Depth Solar Irradiance Supra-Thermal-Auroral Particles Surface Type Surface Wind Stress Suspended Matter Total Water Content Vegetation Index VIIRS CMIS CrIS/ATMS OMPS SES GPSOS ERBS TSIS ALT APS Atmospheric Vertical Moisture Profile Atmospheric Vertical Temp Profile Imagery Sea Surface Temperature Sea Surface Winds Soil Moisture Aerosol Optical Thickness Aerosol Particle Size Aerosol Refractive Index Albedo (Surface) Auroral Boundary Auroral Energy Deposition Auroral Imagery Cloud Base Height Cloud Cover/Layers Cloud Effective Particle Size Cloud Ice Water Path Cloud Liquid Water Cloud Optical Thickness Cloud Particle Size/Distribution Cloud Top Height

10 LRD Environmental Data Records (28 EDRs)

11 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 Total 27 Better 2 Below 155 Total 13 Better 1 Below 197 Total 17 Better 2 Below 70 Total 9 Better 0 Below 98 Total 11 Better 2 Below 149 Total 43 Better 2 Below Attributes better than TRD threshold Attributes at TRD threshold Attributes below TRD threshold Total attributes = attributes above, 724 at, 9 below threshold

12 LRD Performance Approaches Objective Levels 164 Total Attributes 121 Meet Objective 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) Supporting EDRs (5) 72Total Attributes 41 Meet Objective 249Total Attributes 143 Meet Objective Total attributes = attributes above, 180 at, 0 below threshold

13 Our LRD Approach Balances Performance and Provides Flexibility Limited LRD Bandwidth 3.88 Mbps Programmable LRD downlink provides flexibility for the future Programmable LRD downlink provides flexibility for the future 1330 & CrIS CMIS VIIRS Selection of compression applied to selected APIDs for downlink for increased mission data throughput

14 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-specific 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 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-specific 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

15 Field Terminal Data Flow Spacecraft Downlink Field Terminal Viterbi- decode CCSDS Processor Frame sync Demod Down-convert filter LNA Bit Sync | RF to Digital | Raw Bit Clocked Stream CVCDU U R-S Decode Derandom FTS Software HDF 5 Ancillary Data Store VCDU Data Management Processing Create xDRs Data Delivery Convert EDRs to HDF User Display Subsystem Post-processing Analysis AES Decrypt MPDU CAD Infrastructure Network connection provides access to ancillary data for connected field terminals Ingest Assemble and Granulate Data Key Material

16 HRD EDR Production Timing Assessment

17 LRD EDR Production Timing Assessment

18 Field Terminal Software Data Processor Element Design Open Systems Group standards compliance at interfaces minimizes configurations Programmable LRD downlink favors 8 Priority EDRs Supports selection of onboard LRD data compression rates by APID Provides flexible ancillary data approach Dynamic ancillary data via satellite downlink to meet System Specification performance NPOESS FT Mission Support Data Server via Internet for increased performance

19 FTS EDR Performance HRD EDR Performance 99% of EDR performance attributes meet or exceed performance thresholds Analysis shows latency requirements achievable with current COTS desktop workstations As with the IDPS software, the FT software adapts to missing channel data or missing ancillary data and uses graceful degradation rules Lossless RICE compression on VIIRS LRD EDR Performance Meets key users’ needs: 0.8 km resolution imagery and programmable downlink Produces the 8 high priority EDRs at or near LRD objective levels Produces all 15 lower priority EDRs and required predecessor EDR products Designed to automatically recognize missing channels and ancillary data Lossless and Lossy JPEG2000 compression on selected APIDs -selection of compression level to APID ongoing

20 Field Terminal Ancillary Data Approach Dynamic Ancillary Data contained within LRD and HRD downlinks to meet specified performance levels From the NWP Forecast model for six elevation levels at a given geographic location repeated for 12,750 geographic locations around the world LRD Dynamic Ancillary Data within LRD downlink -Surface Pressure HRD Dynamic Ancillary Data within HRD downlink -Temperature -Humidity -Surface Pressure -Standard Pressure Levels -Wind Speed, Wind Direction -Precipitable Water -Effective Sunspot Number and Global Geomagnetic Kp for SESS EDR production NPOESS FT Mission Support Data Server via Internet for increased EDR performance Contains full set of Official Ancillary data Contains full set of NPOESS Auxiliary data Contains Community bulletins as to System status Antenna pointing information for signal acquisition

21 Equal-distant Data Distribution for Ancillary Data Equal-distant ancillary data cells provide for efficient data handling and storage: FT Approach 12,750 cells Lat/Lon Approach 64,800 cells Ancillary data cells corresponding to two VIIRS swaths

22 What is NPOESS planning? NPOESS responsible for building software and terminal specifications, but not for building terminals NPOESS will publish specifications and design trade information for users NPOESS will make software available on the program website for download NPOESS will deliver data to users world-wide in accordance with US national data policy Data will be downlinked openly around the world at no cost to receivers Capability for data encryption/data denial exists for national defense needs -Denial can be done on a world-wide or geographic basis NPOESS calls the world-wide users “field terminals” (to differentiate from the Weather Centrals)

23 Integrated Program Office Points of Contact Field Terminal IPT Mr. John Overton: (301) ext 216 Mr. Bill Munley: (301) ext 193 Mr. Joe Mulligan: (301)-2124 ext 177 NPOESS Websites (electronic bulletin board)

24 NPOESS – Serving Worldwide User Needs 24

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