NOAA’s Direct Broadcast Beyond 2015

1. NOAA’s Direct Broadcast Beyond 2015 CGMS 40 WG-IV

2. Future Direct Readout Services NOAA geostationary and polar-orbiting environmental satellite constellations will employ new downlink frequency allocations, larger bandwidths, and faster data rates Environmental data users must employ new field terminal receivers unique to that particular broadcast service

3. Joint Polar-orbiting Satellite System (JPSS) • JPSS satellite missions include Suomi-NPP, JPSS-1 and JPSS-2; • S-NPP and JPSS spacecraft will replace the current POES constellation; • On February 22, 2013 operational control of the S-NPP was transitioned from NASA to NOAA.

4. Transition from POES to S-NPP/JPSS • Spacecraft services and field terminal changes • POES Constellation • Automated Picture Transmission (APT): Frequency change in the 137.1 – 137.937 MHz frequency band; • HRPT Service remains unchanged; • APT/HRPT services available until POES end-of-life. • S-NPP/JPSS Constellation • APT service will not be available; • HRPT will be replaced with the Low Rate Data (LRD) broadcast, requires L-band field terminal upgrades; • LRD will not be available on S-NPP or JPSS-1; • High data Rate (HRD) service requires a new X-band field terminal; • Most likely LRD will not be on JPSS-2 and beyond.

5. Summary of Direct Readout Services NOAA JPSS Office (NJO) is considering not having an L-band service on JPSS-2 and beyond spacecraft.

6. Future JPSS Proving Ground DB DemoCSPP sites Community Supported Processing Package (CSPP) demonstrates the value of 15- 30 minutelatency for nowcasting and regional forecast model applications by establishing a network of direct readout stations - includes METOP and POES Guam

7. SNPP/JPSS Direct Readout Services JPSS-1 mission will provide a High Rate Data (HRD) direct broadcast (similar to SNPP), JPSS-2 mission will provide both an HRD and a Low Rate Data (LRD) broadcast (similar in link characteristics as the MetopAdvanced High Resolution Picture Transmission (AHRPT), NOAA will distribute the non-proprietary field terminal software, software changes, and program updates, The direct broadcast X-band community will be able to acquire tailored software directly NOAA’s Cooperative Institute for Meteorological Satellite Studies (CIMSS), The initial version of the SNPP package called "Community Satellite Processing Package (CSPP)" is a public release, CSPP also supports Metop and POES data.

8. GOES-R Series • Instrument Suite: • Advanced Baseline Imager (ABI) • Space Environment In-Situ Suite (SEISS) • Extreme Ultraviolet Sensor/X-Ray Sensor Irradiance Sensors (EXIS) • Solar Ultraviolet Imager (SUVI) • Magnetometer (MAG) • Geostationary Lightning Mapper (GLM

9. Transition to the GOES Series GOES Re-Broadcast (GRB) will be 31 Mbps Dual circularly polarized data stream GRB to continue to be transmitted in L-band, will use an expanded bandwidth (1681 MHz -1692 MHz) GVAR format will no longer be used GOES ReBroadcast (GRB) will require a new L-band field terminal HRIT/EMWIN services will require new hardware/software upgrades or purchase new system ) service, requires new field terminal. GOES LRIT will be combined with EMWIN and called HRIT/EMWIN for GOES-R at a new higher data rate and a new transmission frequency.

10. GVAR-GRB Comparison

11. GRB Ground Antenna Sizes 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 NOAA Satellite and Information Service: National Environmental Satellite, Data, and Information Service (NESDIS)

12. GRB Downlink Characteristics These specs should be considered preliminary and will be finalized in 2012 • Input Center Frequency: 1690.0 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 • Down link margin: 2.5 db • Compression - Lossless compression required • JPEG2000 and SZIP are candidates that are being considered/studies • Format • Inner Frame Format: CCSDS Space Packet • Outer Frame Format: DVB-S2 • 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: 4.8 dB/Hz • Minimum Antenna System G/T (dB/K) : 15.2

13. GRB Simulators • Purpose • On-site testing of user ingest and data handling systems, aka GRB field terminal sites • Simulates 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. • September 2013 • Key Capabilities and Features • Transportable • Fully self contained • Configurable hardware units • Outputs simulated GRB • “Off-line Mode” to create and setup configurations and scenarios • Also, create test patterns and input proxy data • “On-line Mode” to continuously output GRB data stream at IF or baseband levels • Includes monitoring and logging of events

14. Summary • GOES-R Constellation • GOES VARiable (GVAR) broadcast will be replaced with GOES Re-Broadcast (GRB) service, requires new field terminal. • GOES LRIT will be combined with EMWIN and called HRIT/EMWIN for GOES-R at a higher data rate and a new transmission frequency.

15. Useful Links • METOP • http://www.eumetsat.int/Home/index.htm • NOAA’s POES Constellation • http://www.ospo.noaa.gov/ • http://noaasis.noaa.gov/ • http://www.osdpd.noaa.gov/ml/index.html • NOAA’s SNPP/JPSS Constellation • http://www.jpss.noaa.gov/ • http://eospso.gsfc.nasa.gov/eos_homepage/mission_profiles/show_mission.php?id=71&mission_cat_id=17 • NOAA’s GOES Constellation • http://www.goes-r.gov/