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User Readiness for GOES-R GRB Simulator and HRIT/EMWIN

User Readiness for GOES-R GRB Simulator and HRIT/EMWIN. Stephen Ambrose, Marlin Perkins, Paul Seymour. NOAA/NESDIS OSPO/Satellite Products and Services Division NCWCP College Park and NSOF Suitland Stephen.Ambrose@noaa.gov. http://www.goes-r.gov/. GOES-R Operational System Configuration.

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User Readiness for GOES-R GRB Simulator and HRIT/EMWIN

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  1. User Readiness for GOES-RGRB Simulator and HRIT/EMWIN Stephen Ambrose, Marlin Perkins, Paul Seymour NOAA/NESDIS OSPO/Satellite Products and Services Division NCWCP College Park and NSOF Suitland Stephen.Ambrose@noaa.gov http://www.goes-r.gov/

  2. GOES-R Operational System Configuration

  3. Transitioning from GOES NOP to GOES-R • Improved data products for hemispheric retransmission • Faster full disk images • 5 minutes (Mode 4) and 15 minutes (Mode 3) • Full set of Level 1b data • Data from six GOES-R instruments including 16 ABI channels • Requires new antenna, receiver hardware, and processing system to handle the new data volumes • Receiver frequency shift from 1685.7 MHz to 1686.6 MHz • Dual circular polarized signals • Going from 2.11 Mbps (GVAR) to 31 Mbps (GRB)

  4. Transition from GVAR to GRB

  5. GRB Downlink Characteristics • Input Center Frequency: 1686.6 MHz • Content (specified for each of two polarization channels: LHCP, RHCP) • L1b data, QC data and metadata: ABI, SUVI, EXIS, SEISS, MAG • L2 data, QC data, metadata: GLM • GRB Information Packets • Data rate • 31 Mbps maximum data rate • 15.5 Mbps instantaneous maximum for each polarization channel • Downlink link margin: 2.5 db • Compression - Lossless compression required • JPEG2000 (ABI, SUVI) and SZIP (GLM); EXIS, SEISS and MAG data will not be compressed • Format • Outer Frame Format: DVB-S2 • Inner Frame Format: CCSDS Space Packet • Coding • BCH + LDPC (2/3) for 8-PSK and LDPC (9/10) for QPSK • Modem Required C/No (dB-Hz): 78.6 • Maximum Demodulator Required Eb/No (dB) for 1x10-10 BER: • 3.7 dB (8 PSK); 3.9 dB (QPSK) • Minimum Antenna System G/T (dB/K) : 15.2 db/K (at 50 Elevation)

  6. Details of the Dual Polarized Signal • GRB • LHCP: L1b products from ABI 0.64 um band and 6 IR bands (3.9, 6.185, 7.34, 11.2, 12.3, and 13.3 um) • RHCP: L1b products from ABI bands 0.47, 0.865, 1.378, 1.61, 2.25, 6.95, 8.5, 9.6 and 10.35um, L2+ GLM, L1b SUVI, L1b EXIS, L1b SEISS, and L1b Magnetometer products • Ensures load balanced utilization of the two circular polarizations, allowing users to receive all GRB products with a dual-polarized system (both LHCP and RHCP), and allowing users flexibility to receive GOES Imager legacy channels with a single polarized system (LHCP only).

  7. GRB Channel Content Summary • For each instrument: image data + metadata + CCSDS Space Packet overhead • ABI has per pixel QC bits, coded separately • ABI, SUVI, GLM compressed • GRB Info packets via CCSDS File Delivery Protocol (CFDP) • Channel synchronization and coding (link layer) for DVB-S2 • Error correction (LDPC) Note: This is a catalog of the contents and not a sequential organization of the stream ABI SUVI Included in two 15.5 Mbps Bandwidth channels GLM Other Info Packets

  8. GRB Ground Antenna Sizes GOES-West GOES-East NOTES: Calculations based on available data as of May 2011 Each antenna size is usable within the indicated contour Rain attenuations included are: 1.3/1.6/2.0/2.2/2.5 dB (3.8 to 6 m) 4. An operating margin of 2.5 dB is included as the dual polarization isolation is likely to vary within each antenna size area

  9. GRB Resources and Documentation http://www.goes-r.gov/resources/docs.html • Product Users Guide (PUG) for GRB • GRB Downlink Specification

  10. GRB Simulators • Purpose • On-site testing of user ingest and data handling systems, aka GRB field terminal sites • Simulate GRB downlink functionality by generating Consultative Committee for Space Data Systems (CCSDS) formatted GRB output data based on user-defined scenarios, test patterns, and proxy data files. • Available this year. • Key Capabilities and Features • Transportable • Fully self contained • Configurable hardware units • Outputs simulated GRB at baseband and IF levels • “Off-line Mode” to create and configure simulation scenarios • Also, create test patterns and process input proxy data • “On-line Mode” to continuously output GRB data stream • Includes monitoring and logging of events

  11. GRB Simulator Concept Simulated data/test patterns Binary/PNG/JPEG Proxy Data Network Switch Modulator DVBS2/CCSDS Front End Processor GRB signal in Baseband and IF Frequencies • CCSDS packets in LHCP and RHCP streams • Lossless compression • DVBS2 framing • BCH/LDCP encoding • 8-PSK or QSPK modulation GRB Simulator Processor Time code Reader/Generator

  12. GRB Simulator HardwareUser Terminal Connectivity

  13. GRB Simulator Integrated Hardware FRONT REAR Patch Panel Patch Panel

  14. GRB Simulator Integrated Hardware CASE 1 CASE 2 Switch KVM Console FEP Modem Server

  15. GRB Simulator Integrated Hardware KVM Extended

  16. Simulator Delivery and Training Approach • Marlin Perkins of SPSD is the POC for simulator loans. • Selection of order will be based on first come, first served, and customer readiness to receive units. • Simulator will be shipped from the Omaha, Nebraska Harris facility. • Upon arrival, Harris will provide a trainer who will assist in unpacking and training in use. • The borrower will have a period of time with simulator, not to exceed 90 days. • After completion, borrower will pack and ship simulator back to Harris in Omaha. • Harris will receive simulator, re-baseline and make available to the next borrower.

  17. Summary • GRB allows real time distribution of all Level-1b GOES-R data products for direct read out users. • Direct Readout users need to upgrade their equipment for GOES-R: • Significant increase in data rate!!! • New data format!!! • GRB down link specifications and data format specifications have been published. • GRB simulators will be available in 2013 for Direct Broadcast reception equipment development and testing. • Updates to be posted on the GOES-R web site: • http://www.goes-r.gov/

  18. User Readiness for GOES-RGRB and HRIT/EMWIN Stephen Ambrose, Marlin Perkins, Paul Seymour NOAA/NESDIS OSPO/Satellite Products and Services Division NCWCP College Park and NSOF Suitland Stephen.Ambrose@noaa.gov http://www.goes-r.gov/

  19. Transitioning HRIT/EMWIN from GOES NOP to GOES-R • NOAA NWS Emergency Managers Weather Information Network (EMWIN) is a priority-driven weather data broadcast service broadcast • Alerts/Watches/Warnings < 1 minute • Forecasts, Graphic Format Products and Imagery • Low cost ground receive stations • The NOAA NESDIS Low Rate Information Transmission (LRIT) is a collection of reduced resolution GOES and MTSAT imagery and products • Visible, Infrared and Water Vapor Imagery at 4 Km Spatial Resolution • Infrared MTSAT imagery on LRIT-West • Tropical Storm Information • The GOES-R series combines the two services into a single NOAA service called HRIT/EMWIN—HRIT for High Rate Information Transmission.

  20. Transitioning HRIT/EMWIN from GOES NOP to GOES-R • Improved data products for hemispheric retransmission • Faster full disk images: between 15 and 30 minutes • Warnings, Watches, Tropical Storm Information • Copy of GOES Data Collection System (GOES DCS) • Requires new antenna and receiver hardware • Receiver frequency shift to 1694.1 MHz from: • EMWIN 1692.7 MHz and LRIT 1691.0 • BPSK Polarization; EMWIN shift from Offset QPSK • Data Rate to a combined 400 Kilobits per Second from: EMWIN: 19.2 Kbps and LRIT : 128 Kbps (combined 147.2)

  21. Transition from LRIT and EMWIN to HRIT/EMWIN

  22. HRIT/EMWIN Downlink Characteristics • Input Center Frequency: 1694.1 MHz N/S Linear N-S Polarization • Content • Reduced spatial resolution Full Disk GRB images of planned 3 channels every 15 minutes • Alerts/Watches/Warnings and Tropical Storm Information, etc • Forecasts, Graphic Format Products and Imagery • Copy of GOES DCS • Data rate • 927 Kbps maximum data rate with 400 Kbps content packet data rate • Predicted downlink link margin at 10 degrees or more elevation angle: • 2.0 to 2.6 dB for receiving locations with a 1.2 meter diameter antenna • 1.3 dB or less for receiving locations with a 1.0 meter diameter antenna • Compression – Currently undefined • Format – CGMS Global Specification for LRIT/HRIT

  23. HRIT/EMWIN Downlink Characteristics • Coding – BPSK • Convolutional rate ½ code with constraint length 7 concatenated with Reed Solomon (255,223) with Interleave = 4. • Square Root Raised Cosine filtering using an Alpha factor of 0.3. • The resulting “Necessary Bandwidth” for this signal will be 1.205 MHz. • Modem Required The predicted C/No is in the range of 63 to 67 dB • Maximum Demodulator Required • Eb/No is 4.6 dB for a BER of 1x10-8 after decoding. • Minimum Antenna System • At 5 degree elevation, the minimum antenna is 1.2 meter. • At 10 degrees or more elevation the minimum size is 1.0 meter. • Using a LNA or LNB with a system noise temperature of about 200 K will provide a G/T of 1.0 dB/K or -0.3 dB/K respectively.

  24. Planned HRIT/EMWIN Resources for UsersTechnology Demonstration Program • GOES-R Program undertook a project to show that relatively inexpensive receivers designed for the new service could: • Support HRIT/EMWIN and all of the predecessor services • Software Defined Radio Receiver could consist of a modest amount of hardware (an antenna, low noise amplifier and a computer interface). • Design that is available to all users, hobbyist and manufacturers, with the software available to anyone at low or no cost. • Info on the GOES-R HRIT/EMWIN Users Page • http://www.goes-r.gov/users/hrit.html

  25. HRIT Software Defined Prototype System Diagram • A Flexible Software Based HRIT/EMWIN Prototype Solution for the GOES-R Transition. • Document - A Flexible Low Cost EMWIN-HRIT Receiver for the GOES-R Transition. • Poster - Hardware Schematic Description. • Document - Hardware Schematic Diagrams. • Document - Notice Regarding Use of ETTUS Corp Documentation. • Document - Software Source Code and Documentation. • Download.zip file - Executable Receiver Software. + Download Software • http://www.goes-r.gov/users/hrit.html

  26. HRIT/EMWIN Summary and Contact Information • Paul Seymour – LRIT and HRIT/EMWIN Program Manager • Paul.Seymour@NOAA.Gov • 301-817-4521 • www.noaasis.noaa.gov • Rob Wagner - EMWIN and HRIT/EMWIN Program Manager • Robert.Wagner@NOAA.Gov • 301-713-0870 x 154 • http://www.weather.gov/emwin • Santos Rodriguez - EMWIN and HRIT/EMWIN Program Manager • Santos.Rodriguez@NOAA.Gov • 301-713-0077 • http://www.weather.gov/emwin • HRIT/EMWIN Info: http://www.goes-r.gov/users/hrit.html

  27. But Wait – There’s More! • Miami 2011 – Our exhibit was at the end of the hallway. • We were not getting much traffic. • How to get people to visit the exhibit? • Of course; an afternoon severe storm warning associated with a Squall Line! • All Weather Geeks to the HRIT/EMWIN exhibit!

  28. The Squall Line Arrives!

  29. Our Little Antenna Points Hopefully At The Sky – Where is GOES-13!

  30. HRIT/EMWIN Exhibit – Perfect! You only need the antenna setup and what you see on the left front of the table.

  31. HRIT/EMWIN Exhibit and Poster Visit the HRIT/EMWIN Exhibit Across the Hall. Along With Those of the Vendors! Scott Rogerson Hopes . . . WITHOUT THE SQUALL LINE!

  32. HRIT/EMWIN Summary and Contact Information • Paul Seymour • Paul.Seymour@NOAA.Gov • 301-817-4521 • www.noaasis.noaa.gov • Rob Wagner • Robert.Wagner@NOAA.Gov • 301-713-0870 x 154 • http://www.weather.gov/emwin • Santos Rodriguez • Santos.Rodriguez@NOAA.Gov • 301-713-0077 • http://www.weather.gov/emwin • HRIT/EMWIN Info: http://www.goes-r.gov/users/hrit.html

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