[IGSMAIL-4463]: Proposed change in antenna calibration policy

Angelyn W. Moore Angelyn.W.Moore at jpl.nasa.gov
Fri Jun 20 16:01:14 PDT 2003


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IGS Electronic Mail      20 Jun 16:01:15 PDT 2003      Message Number 4463
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Author: Angelyn Moore

Dear Colleagues,

It has been proposed that, effective immediately, when an
antenna+radome combination appears in the IGS network *for the
first time*,

  1. Calibrations with and without the radome will be placed into
     the ftp://igscb.jpl.nasa.gov/pub/station/general/igs_01.pcv file
  2. The calibration including the radome will be put into the
     ftp://igscb.jpl.nasa.gov/pub/station/general/igs.snx file for
     this antenna+radome pair

Procedure up until now has been to record the presence of, and changes
in, radomes in igs.snx, but use only the calibration of the radome-free
antenna in both igs_01.pcv and igs.snx.

Any comment on this is appreciated at your earliest convenience at
igscb at igscb.jpl.nasa.gov.

Handling the change to calibrations which include radomes for
equipment that already exists in the IGS will be considered
separately, since there will be quite a bit of coordination required,
in view of the time series already generated.

Best regards,
Angie
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
  Angelyn W. Moore, Ph.D.            Deputy Director, IGS Central Bureau
  JPL/Caltech                               Angelyn.W.Moore at jpl.nasa.gov
  4800 Oak Grove Dr. MS 238-540                   voice: +1 818 354 5434
  Pasadena CA 91109 USA  http://igscb.jpl.nasa.gov  fax: +1 818 393 6686




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