Differences between revisions 3 and 9 (spanning 6 versions)
Revision 3 as of 2009-03-17 04:30:15
Size: 771
Editor: l4-m0
Comment:
Revision 9 as of 2009-03-19 03:01:35
Size: 1684
Editor: l4-m0
Comment:
Deletions are marked like this. Additions are marked like this.
Line 1: Line 1:
== HMI Pipeline Module - TimeAveraged_IQUV == == HMI Pipeline Module - TimeAverage_IQUV ==
Line 3: Line 3:
This pipeline module takes as input the HMI values for I, Q, U, and V and performs a time average. For a given time and duration this pipeline module locates the corrected level 1 HMI filtergrams needed to compute I, Q, U, and V.
The filtergrams are interpolated to the proper time, remapped to the correct disk coordinates, and averaged to determine I,Q,U,& V.
The output is a DRMS dataset containing the appropriately time-averaged quantities corrected for solar rotation and other known instrumental effects.
Line 5: Line 7:
The output is a DRMS dataset containing the appropriately time-averaged I, Q, U, and V quantities corrected for solar rotation and other known instrumental effects.
Line 7: Line 8:
The nominal cadence is 12 minutes, averaging 8 90-second input records. ===== Module Inputs =====
 . Input is the set of corrected level 1.0 HMI filtergrams needed to compute I, Q, U, and V for a specified time period.
Line 9: Line 11:
Output data are temporary products and not archived ===== Module Outputs =====
 . The output is a DRMS dataset containing the appropriately time-averaged quantities I, Q, U,and V, corrected for solar rotation and other known instrumental effects.
Line 11: Line 14:
Currently this module has not been prototyped
Line 13: Line 15:
Currently this code has not been written ===== Cadence =====
 . Nominally 12 minute averages of I,Q,U, and V will be produced.
 . Effectively 8 90-second input records will be averaged, but actually more will contribute with appropriate weighting to reduce aliasing.
 
===== Options =====
 . Anti-aliasing option
 . Time and duration of averaging
Line 15: Line 23:
Currently this module has not been tested ===== Archive =====
 . I,Q,U, and V are not archived.
Line 17: Line 26:
Currently this module has no known issues ===== Overall Status of Module =====
 . 75% complete
Line 19: Line 29:
The responsible scientist is Jesper Schou ===== Status of Code =====
 . 85%
 . Code has been run on HMI test data
Line 21: Line 33:
--- ===== Status of DRMS module =====
 . 50%
Line 23: Line 36:
===== Issues needing resolution =====

  * Type of temporal anti-alias temporal filtering
 
===== Responsible scientist =====
 . Jesper Schou

===== Remarks =====



----

 . ''Back to ["HMIModuleTable"]''

HMI Pipeline Module - TimeAverage_IQUV

For a given time and duration this pipeline module locates the corrected level 1 HMI filtergrams needed to compute I, Q, U, and V. The filtergrams are interpolated to the proper time, remapped to the correct disk coordinates, and averaged to determine I,Q,U,& V. The output is a DRMS dataset containing the appropriately time-averaged quantities corrected for solar rotation and other known instrumental effects.

Module Inputs
  • Input is the set of corrected level 1.0 HMI filtergrams needed to compute I, Q, U, and V for a specified time period.

Module Outputs
  • The output is a DRMS dataset containing the appropriately time-averaged quantities I, Q, U,and V, corrected for solar rotation and other known instrumental effects.

Cadence
  • Nominally 12 minute averages of I,Q,U, and V will be produced.
  • Effectively 8 90-second input records will be averaged, but actually more will contribute with appropriate weighting to reduce aliasing.

Options
  • Anti-aliasing option
  • Time and duration of averaging

Archive
  • I,Q,U, and V are not archived.

Overall Status of Module
  • 75% complete

Status of Code
  • 85%
  • Code has been run on HMI test data

Status of DRMS module
  • 50%

Issues needing resolution
  • Type of temporal anti-alias temporal filtering

Responsible scientist
  • Jesper Schou

Remarks


JsocWiki: TimeAverage_IQUV (last edited 2013-05-01 04:35:23 by localhost)