1. SECCHI Consortium Meeting, July 2001 SECCHI Ground Data Systems and Data Processing Nathan Rich NRL/Interferometrics 202-404-1408 nathan@calliope.nrl.navy.mil

2. SECCHI Consortium Meeting, July 2001 Outline Purpose Architecture Build Strategy Organization and Responsibilities Data Processing

3. SECCHI Consortium Meeting, July 2001 GDS Function Control and Monitoring of Instruments during –Telescope Development –Integration & Test –Operations

4. SECCHI Consortium Meeting, July 2001 Architecture - Components Computers (PC or Sun workstation) used to interface with and/or emulate instruments or flight electronics Software Instrument and mechanism drivers and interfaces Telemetry and command Data processing Ancillary lab equipment –Stimuli, power, detectors, etc.

5. SECCHI Consortium Meeting, July 2001 Architecture - Components Telescopes –Camera: 1355 (Spacewire) Interface –Mechanisms: controlled via MEB SEB: SECCHI Electronics Box –Where the Flight S/W lives, interface with S/C

6. SECCHI Consortium Meeting, July 2001 Operations Software Overview Instrument Test and Operations Software (ITOS) –Developed at GSFC –Flight Heritage: TRACE, Triana, Swift, Mars Pathfinder, … –Hosted on a UNIX or PC Workstation –TCP/IP, serial, and IEEE-488 external communication –Accepts CCSDS telemetry transfer frame data –Automated Test Procedures using System Test and Operating Language (STOL) interpreter BP/COMET –Developed for NRL Blossom Point satellite –Being used by SEB developers

7. SECCHI Consortium Meeting, July 2001 Architecture - Build Strategy Camera Level –(~Dec. ‘01): IDL controller on Windows PC Mark Cooke, UBHAM –(July ‘02): ITOS flight-like camera control Camera C driver handles CCSDS packets (UBHAM) ITOS Image Acquire and Save ITOS Camera Commander ITOS GPIB-488 Handler IDL Image Processing to FITS

8. SECCHI Consortium Meeting, July 2001 Architecture - Build Strategy Telescope Level (Jan. ‘03) (?) –ITOS control with flight (development?) mechanisms SECCHI Level I&T (Nov. ‘03) –ITOS Tlm & Ctl, interface through SEB and MOC Emulator STEREO Level I&T (Sep. ‘04) Mission Operations (Aug. ‘05)

9. SECCHI Consortium Meeting, July 2001

14. SECCHI GDS Organization

15. SECCHI Consortium Meeting, July 2001 GDS Interfacing Groups Camera Electronics (UBHAM/RAL) Mechanisms EGSE (LMSAL) Telescope teams/lab setups (COR1, COR2, EUVI, HI, GT) SECCHI Electronics Box (Naval Center for Space Technology=NRL Code 8000) Flight Software (NRL) STEREO MOC (APL)

16. SECCHI Consortium Meeting, July 2001 GDS Documentation Schedule FSW/GSW ICD8/15/01 Development/Management Plan9/1/01 GDS Requirements9/1/01 Data Processing Plan9/1/01 DGSW User's Guide7/31/02 Detailed Design 11/1/02 FGSW Test Plan11/1/02 FGSW User's Guide8/31/03

17. SECCHI Consortium Meeting, July 2001 SECCHI Data Processing Stereo Data Flow Overview

18. SECCHI Consortium Meeting, July 2001

19. SECCHI Data Processing TBDs Calibration –Determine before launch: geometric, vignetting, flat field, stray light, photometry –F-corona model/background? Stereo analysis resource requirements –Beowulf? Fast PCs? Supercomputers? CME Search & Characterization Data Archive & Distribution

20. SECCHI Consortium Meeting, July 2001 SECCHI Data Processing Plan Summary