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  >NWS Home Page > Organization > Office of Operational Systems >NOAAPORT Home Page

NOAAPORT Update History

This page provides a chronology of updates and additions made to the NOAAPORT User's Page.
  • The AWIPS/NESDIS ICD, which describes the interface for the GINI-format GOES imagery, originating at NESDIS and flowing through the NCF to the SBN's GOES channels, has been updated to reflect polar imagery identifications for the i1 i2 in the header; satellite sub-point latitude and longitude; satellite height; upper right hand corner latitude and longitude points; additional satellites were added to the list; additional possible sectors; also, a new table was added that provides size and specifications of the polar satellite sectors. The Document Number AA0130008 CH-5, dated December 1, 2005, can be downloaded from the "NOAAPORT References" page.

  • NOAAPORT EVOLUTION PLAN (Updated April 2005) The old NOAAPORT T1 circuit technology has been replaced with an open standard, open source, scalable design, specifically Digital Video Broadcast- Satellite (DVB-S). With deployment of DVB-S, the NOAAPORT broadcast can be easily upscaled to meet the demand when new science data becomes available and delivery to the NWS field is required.
  • The transition from the old T1 technology to the new DVB-S technology has been accomplished in phases.
    Phase 1: Post a technical report on the NOAAPORT web page GOES and Non-GOES Imagery Product Compression Approach for External NOAAPORT Satellite Broadcast Network Users which describes the open source (zlib) compression algorithm and a method to decompress zlib compressed data [April 03]. Note, Zlib is already used to compress NEXRAD radar data over NOAAPORT. Sample zlib compressed GOES products routinely transmitted over both GOES East and GOES West channels for NOAAPORT users to test with. [Complete]
    Phase 2: Compress all products on both GOES East and GOES West using the open source (zlib) compression algorithm.
    [Complete]
    Phase 3: Combine both GOES East and GOES West data feeds on both GOES East and GOES West channels. [Complete]
    Phase 4: Cease transmission of GOES data on either the former GOES East or former GOES West channel (specific channel to be determined at a later date). [Complete]
    Phase 5: Begin using the satellite space from the vacated GOES channel to test the DVB-S technology over the NOAAPORT link. [Complete]
    Phase 6: Begin transmission of additional gridded data on the new NWSTG2 channel (former GOES West channel). This channel will use the new DVB-S technology. The new NWSTG2 gridded data will also be compressed using the open standard JPEG2000. The specific gridded data to be placed on NWSTG2 is to be determined. [Complete]
    Phase 7: Eliminated. Overtaken by events.
    Phase 8: Transmission of NOAAPORT will begin on a single channel with an equivalent 6 T1 capacity. The single channel will be on the same satellite, but on a different transponder than is currently used, using DVB-S technology. The specific transponder will be determined at a later date. [Complete]
    Phase 9: Shut down all old NOAAPORT channels. End of all legacy NOAAPORT channels. All NOAAPORT users must have DVB-S capability by this date. [Completed 3/31/05]
    Phase 10: (Eliminated)
    Phase 11: (Eliminated)

  • August 2004 - The following NOAAPORT sections have been updated: NOAAPORT Channels, Manufacturers List, NOAAPORT Data Characteristics, Latitude/Longitude Dimensions of Remapped GOES/Composite Imager Products (GOES 10-11), Latitude/Longitude Dimensions of Remapped GOES/Composite Imager Products (GOES 12 and N), and Remapped AWIPS Satellite Sounder Imagery Products from NESDIS.

  • April 2003 - The NOAAPORT Link Budget Parameters and Characteristics has been updated to reflect the new increased Transmit EIRP values and the EIRP Contour, FTS Contour, and G/T Contour charts have been replaced to reflect the actual footprint values versus the earlier charts' predicted value.

  • The NOAAPORT User's Page was reformatted and the NOAAPORT Technical Contacts updated on March 13, 2003.

  • On November 27, 2001, the NWS added 11 new radar products from WSR-88D sites to the NOAAPORT broadcast. Go to the NWS RPCCDS page under Available Radar Products to view the list of NOAAPORT products.

  • After the January 1, 2001 termination of the NEXRAD Information Dissemination Service (NIDS) agreement and the operational implementation of the NWS Radar Products Service (RPS), the NWS began broadcasting radar products over NOAAPORT without data encryption and in a compressed format. The compression algorithm used is based on the zlib compression libraries. For more information about the RPS and Radar data access over NOAAPORT go to the NWS RPCCDS Page.

  • NWS Certifies that NOAAPORT is Operational: On November 25, 1998, Walter Telesetsky, Director Office of Systems Operations, signed a statement certifying that the NOAAPORT satellite broadcast is operational.

 


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