noaa’s direct broadcast beyond 2015

Agency, version?, Date 2012

Coordination Group for Meteorological Satellites - CGMS

Add CGMS agency logo here (in the slide master)


NOAA’s Direct Broadcast Beyond 2015

CGMS 40WG-IV




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




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.




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.





Summary of Direct Readout ServicesSatellite/Series Time Period

Type of Service

(1)

Frequency Band

Nominal Freq Range& Data Rate

NOAA 1983 – 2013+APT VHF 137 MHz; 33 Kbps

HRPT (3) L-band 1698, 1702.5, or 1707 MHz; 665 Kbps

METOP-A/B 2006 - presentAHRPT (3) L-band 1701/1707 MHz; 3.5 Mbps

LRPT VHF 137/139 MHz; 75 KbpsS-NPP 2011 - present HRD (2) X-band 7812 MHz; 15 MbpsJPSS-1 2017 - 2023 HRD (2) X-band 7812 MHz; 15 Mbps

FF-1 2017 - 2023 A-DCS L-band 1705 MHz; 1.5 Mbps

JPSS-2 2022 - 2028HRD (2) X-band 7812 MHz; 15 Mbps

LRD L-band 1705 MHz (TBD); 3.8 Mbps

1. All services are Digital, except NOAA APT which is Analog.2. Contains Full Resolution Imagery Data3. L-band Full Resolution Imagery ends with NOAA-19 circa 2013, but continues with METOP-B. Data rate for METOP-C is uncertain.

NOAA JPSS Office (NJO) is considering not having an L-band service on JPSS-2 and beyond spacecraft.




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

Future JPSS Proving Ground DB DemoCSPP sites

Guam




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 Metop Advanced 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.




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




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.

9




GVAR-GRB Comparison




GRB Ground Antenna Sizes

NOTES:1. Calculations based on available data as of May 20112. Each antenna size is usable within the indicated contour3. 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)




GRB Downlink Characteristics• 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

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These specs should be considered preliminary and will be finalized in 2012




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




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.




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/

http://www.eumetsat.int/Home/index.htm

http://www.eumetsat.int/Home/index.htm

http://www.ospo.noaa.gov/

http://www.ospo.noaa.gov/

http://noaasis.noaa.gov/

http://noaasis.noaa.gov/

http://www.osdpd.noaa.gov/ml/index.html

http://www.osdpd.noaa.gov/ml/index.html

http://www.jpss.noaa.gov/

http://www.jpss.noaa.gov/

http://eospso.gsfc.nasa.gov/eos_homepage/mission_profiles/show_mission.php?id=71&mission_cat_id=17



http://www.goes-r.gov/

http://www.goes-r.gov/

noaa’s direct broadcast beyond 2015

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