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USGS/EDC Archive Preservation Status Stuart Doescher, USGS W GISS-17 May 2004 Tromso, Norway

USGS/EDC Archive Preservation Status Stuart Doescher, USGS W GISS-17 May 2004 Tromso, Norway. TM and MSS Archive Conversion System (TMACS). Operations: 1992 to 2002. Number of High Density Tapes (HDT) transcribed: 32,300 Landsat MSS, TM

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USGS/EDC Archive Preservation Status Stuart Doescher, USGS W GISS-17 May 2004 Tromso, Norway

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  1. USGS/EDC Archive Preservation Status Stuart Doescher, USGS WGISS-17 May 2004 Tromso, Norway

  2. TM and MSS Archive Conversion System (TMACS) • Operations: 1992 to 2002. • Number of High Density Tapes (HDT) transcribed: 32,300 • Landsat MSS, TM • Number of DCRSi Cassette Tapes (DCT)s output: 3,200 • Mostly in Telemetry stream format (Frame sync required to read)

  3. WBVT summary • Operated: April 1999 - May 2002 • Number of HDTs converted: 21,300 • Number of Digital Linear Tape (DLT 7000) generated: 143 and an additional 143 as backup • Format: BSQ ( MSS-X) • "orphan" data (no DIAT / SLAT) : 172 HDTs • Bad input tapes: 476 (even with cleaning & baking).

  4. SPOT summary • Operated: late April 2000 - February 2002 • Number of HDTs converted: 6,100 • Number of DLT 7000 tapes generated: 901 • Format: MDA's FRED

  5. Landsat Archive Conversion System (LACS) • Planned Operations: June 2004 – June 2006 • Input: About 6000 HDTs, 3500 DCTs, • Output: ~ 600 tapes of "formatted" data and ~ 700 tapes of "raw" data on 9940B. (200G/tape) • Format: BSQ

  6. Landsat Archive Conversion System (LACS) • Ingest from DCRSi Cassette Tapes (DCTs) • Multispectral Scanner Archive format (MSS-A) data • Multispectral Scanner Product format (MSS-P) data • Thematic Mapper Archive format (TM-A) data • Thematic Mapper raw (TM-R) data • Ingest TM-R data from High Density Tapes (HDTs) • Archive the data to a high-density computer-compatible digital tape: 9940B • Generate and archive browse imagery • Generate inventory information for the new archive.

  7. Data to be converted

  8. Digital Archive LTS LDBS-I LACS Transcription System LACS Database System – Part I Landsat Production Database LDBS-II LACS Database System – Part II Metadata Handler LDB LACS Database LTTAS LACS Tape Tracking and Assessment System TLS Tape Labeling Software LBGS LDBS-III LACS Browse Generation System LACS Database System – Part III Earth Explorer DORRAN NLAPS LACS Context Diagram Scene Tables HDTs, DCTs Job Histories, Metadata LDS LACS Duplicator System Interval Tables, Scene Tables, 9940B Tables Updated Tables Label Information Historic Scene Info Master 9940B Updated Metadata Metadata Label Information Working Copy 9940B All LDB Info Browse Metadata Working Copy 9940B Transcription Operators Assessment Operators Production Control Updated Tables Browse Tape EE Browse Images EE Browse Images Order Information 9940B Tapes

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