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1

• Progress in antenna calibrations
• Recommendations
• R. Schmid, G. Wübbena, G. Mader, B. Haines

2
Recommendations (1)?

• future reprocessing campaigns should use an
  updated antenna model
• z-offset values for newly launched satellites are
  estimated from the weekly SINEX solutions only
  those ACs can be considered that have satellite
  antenna offset corrections included consistency
  with the existing values has to be guaranteed
• the JPL antenna maps should somehow be merged
  with the IGS model ACs are encouraged to
  estimate azimuth-dependent satellite antenna PCVs

3
Recommendations (2)?

• allow the use of individual calibrations within
  the IGS network?
• request robot calibrations for new ground antenna
  types

4
Open issues

• how to add GLONASS calibrations (frequency
  division multiple access!) to ANTEX files?
• how to add (receiver-dependent!) carrier-to-noise
  patterns CN0 to ANTEX files?
• how to get a general definition for the
  orientation of receiver antennas to North?
• rules for the update of the various antenna
  files?
• group delay variations for ground and satellite
  antennas?