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VIE_ SCHED

VIE_ SCHED. Jing SUN. Part I : Background Part II : Workflow Part III : VLBI2010 simulations Part IV : Next step. Backgroud. What’s the purpose of a scheduling program ?. Scheduling Program. skd file. skd file. Station prc file, snp file. Correlator. DRUDG. log file.

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VIE_ SCHED

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  1. VIE_SCHED Jing SUN

  2. Part I : Background • Part II : Workflow • Part III: VLBI2010 simulations • Part IV : Next step VieVS User Workshop 2010

  3. Backgroud • What’s the purpose of a scheduling program ? Scheduling Program skd file skd file Station prc file, snp file Correlator DRUDG log file FS VieVS User Workshop 2010

  4. Backgroud • Current scheduling program • sked : Goddard,ftp://gemini.gsfc.nasa.gov/pub/sked/ • sched : NRAO, http://www.aoc.nrao.edu/software/sched/index.html • ... VieVS User Workshop 2010

  5. Backgroud • VLBI2010 Project • 1 mm measurement accuracy on global baselines • continuous measurements for time series of station positions and EOP • turnaround time to initial geodetic results of less than 24 hrs. • VIE_SCHED • small fast-moving antennas • broadband frequency (2–14 GHz) • two or more antennas at a site • … VieVS User Workshop 2010

  6. Workflow • Input • Station antenna.cat : antenna information catalog file position.cat : station x,y,z locations catalog file equip.cat : equipment IDs catalog file mask.cat : horizon and coordinate masks catalog file • Source source.cat : source positions file flux.cat : source fluxes file VieVS User Workshop 2010

  7. Workflow Read station info from cat files, Read source info from cat files Calculate rise/set Schedule subconfiguration Calculate slewing time to the new source Calculate start time of the observation loop Calculate scan lengths Check source position at the end of the observation Output scheduling info VieVS User Workshop 2010

  8. Workflow • Output • skd file (sked/sched) • NGS file sked2ngs VieVS User Workshop 2010

  9. VLBI2010 simulations • 18 stations network • 4 different 24 hour operating schedules

  10. VLBI2010 simulations VieVS User Workshop 2010

  11. Schedule from sked Schedule from VIE_SCHED VLBI2010 simulations VieVS User Workshop 2010

  12. Next step • logical algorithm • optimization criteria • twin/multiple telescopes • interactive interface

  13. Thanks for your attention ! VieVS User Workshop 2010

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