VIE_ SCHED
13
VieVS User Workshop 7 – 9 September, 2010 Vienna VIE_SCHED Jing SUN
description
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. - PowerPoint PPT Presentation
Transcript of VIE_ SCHED
VieVS User Workshop7 – 9 September, 2010
Vienna
VIE_SCHEDJing SUN
VieVS User Workshop 2010 2
Part I : Background
Part II : Workflow
Part III : VLBI2010 simulations
Part IV : Next step
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BackgroudWhat’s the purpose of a scheduling program ?
Scheduling Program
Station
prc file, snp file
DRUDG
FS
Correlator
skd fileskd file
log file
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BackgroudCurrent scheduling program
sked : Goddard, ftp://gemini.gsfc.nasa.gov/pub/sked/
sched : NRAO, http://www.aoc.nrao.edu/software/sched/index.html
...
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BackgroudVLBI2010 Project
1 mm measurement accuracy on global baselinescontinuous measurements for time series of station positions and EOPturnaround time to initial geodetic results of less than 24 hrs.
VIE_SCHEDsmall fast-moving antennas broadband frequency (2–14 GHz)two or more antennas at a site…
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WorkflowInput
Stationantenna.cat : antenna information catalog fileposition.cat : station x,y,z locations catalog fileequip.cat : equipment IDs catalog filemask.cat : horizon and coordinate masks catalog file
Sourcesource.cat : source positions file flux.cat : source fluxes file
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Workflow Read station info from cat files, Read source info from cat files
Calculate rise/set
Schedule subconfiguration
Output scheduling info
Calculate slewing time to the new source
Calculate scan lengths
Check source position at the end of the observation
Calculate start time of the observationloop
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WorkflowOutput
skd file (sked/sched)
NGS file
sked2ngs
2010-01-04T12h 2010-01-05T00h 2010-01-05T12h
24 hours continuous observing
8 x 1 hour sessions
4 x 2 hour sessions
4 x 1 hour sessions 15926 obs
32446 obs
33208 obs
99370 obs
18 stations network
4 different 24 hour operating schedules
VLBI2010 simulations
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schedule Xp,Yp,UT1 (uas,uas,uas) from IGG
Xp,Yp,UT1 (uas,uas,uas) from GSFC
41 hour session [34 41 24] [28 19 15]42 hour session [27 28 16] [15 9 12]1 hour session [27 27 16] [18 10 11]24 hours continuous session
[10 12 6] [10 7 9]
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-1.5
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mea
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North Component
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station index
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RKW
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CN
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YIS
GG
AO
2010
KO
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TSU
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YAR
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station index
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TSU
KU
B32
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Zenith Component
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station index
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QI
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CN
AR
YIS
GG
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KO
KEE
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TSU
KU
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KAT
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LD20
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YAR
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HAR
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schedule 3D RMS (mm) from IGG
3D RMS (mm) from GSFC
41 hour session 8.17 8.442 hour session 6.25 5.81 hour session 6.11 5.624 hours continuous session
3.30 3.3
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4*1 hour session from VIE_SCHED 4*1 hour session from SKEDnumber of scans 480 653number of sources 263 163number of obs 18383 159273D RMS (mm) 11.2 12.4
VLBI2010 simulations
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source distribution
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station index
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observations distribution
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station index
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observations distribution
0 2 4 6 8 10 12 14 16 189
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station index
sky
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sky coverage distribution
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station index
sky
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sky coverage distribution
Schedule from sked Schedule from VIE_SCHED
logical algorithm
optimization criteria
twin/multiple telescopes
interactive interface
Next step
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Thanks for your attention !
