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Data Compression Study for GOES-R Sounder (ABS/HES)

Data Compression Study for GOES-R Sounder (ABS/HES). H-L Allen Huang , Bormin Huang, Kevin Baggett CIMSS/SSEC/UW-Madison Timothy J. Schmit, Roger Heymann ORA/OSD/NESDIS/NOAA. - Approaches On-Ground; On-Board - Current Compression Study Results. GOES Users Conference II Oct. 1-3, 2002.

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Data Compression Study for GOES-R Sounder (ABS/HES)

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  1. Data Compression Study for GOES-R Sounder (ABS/HES) H-L Allen Huang, Bormin Huang, Kevin Baggett CIMSS/SSEC/UW-Madison Timothy J. Schmit, Roger Heymann ORA/OSD/NESDIS/NOAA - Approaches On-Ground; On-Board - Current Compression Study Results GOES Users Conference II Oct. 1-3, 2002

  2. GOES-R SOUNDER COMPRESSION TEAM APPROACH • Ground approach (CPU/Storage intensive - ~O(N4)) • Independent Principal Component (IPC) • NESDIS/NOAA - Mitch Goldberg • Dependent Principal Component (DPC) • CIMSS/UW - H-L Allen Huang • On-Board Approach (CPU/Storage - low - <<O(N4)) • Rice - GSFC, PenShu Yeh • Wavelet/JPEG 2000 - Aerospace, Steve Hou • Wavelet/UW/2002 - CIMSS/UW, Bormin Huang

  3. GOES-R SOUNDER UW COMPRESSION APPROACHES • UW Wavelet -On Board/On Ground ABS/HES Data 3-D Integer Wavelet Transform Zerotree Coding Arithmetic Coding Encoder Compressed Data • UW DPC - On Ground Only (if time permits) PC Analysis /SVD PC Truncation/Transformation ABS/HES Data Covariance Compressed Data

  4. UW DPC can achieve practical lossy data compression ratio of 10 to 20 LW MW CR=25 CR=13 SW However, It requires significant H/W resources CR=20

  5. UW DPC lossy compression loss is mainly “Noise” only(very little “Signal” loss ~ 10-3) Temperature Ch. CR=10 Window Ch. CR=10

  6. ABS/HES COMPRESSION STUDY SUMMARY UW - Wavelet Lossless (~2) DPC Lossy (~10-20; tunable) (On-ground only) NESDIS - IPC Lossy (~10-20; tunable) (On-ground only) Aerospace - Wavelet Lossless (~2) Wavelet Lossy (~4-?; tunable) GSFC - Rice Lossless (~2) Rice Lossy (~4-?; tunable) ? - under study Poster - Data Compression Study for GOES-R Sounder Comes to the poster for grand details and to discuss other team member’s results too !!!

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