USNO VLBA Support Meeting

Date: July 9th 2015

Time: 11 am Mountain, 1pm Eastern

*Phone: 434-817-6584 rm 152, Socorro

Attending:

USNO: Alan, Nicole, Chris, Dave

NRAO: Ephraim, Peggy, Walter

Agenda

Status
  • Correlator: Discussion held in other biweekly meetings.
    • James and Walter are having weekly or biweekly meetings with USNO for correlator issues.
  • VLBA Observations
    • Daily Observation Report for June
      • Early on in June the leap second got added to EOP preobs files early. This was fixed around the 5th, observations were maintained.
      • During this time there were backups (LA&SC) done independently and will be useful for baseline characterization.
      • Worse data fits at the end of the month due to SC usage (rms usually in 50 range, one day at 110). No word on the next level of data usage.
      • FRM problems continue at SC - the main impact is loss of June 30th data.
      • n5172, n5173 (6/21, 6/22) weren't usable - probably due to then undiagnosed MK issues.
    • 4 station observations - twice-monthly
      • No issues
    • 5 station runs - twice-weekly
      • Observations complete. All have been retrieved from Socorro Correlator and batches exported. By July 10 full dataset will be done.
      • Walter: Has there been any investigation on MK's bias that may be due to an atmospheric model it uses? Chris: further review of bias' significance is ongoing and whether it needs to be rectified. Dave: Nick feels we are ok in interim as long as biases are consistent and that MK is always used.
  • Open issues
    • Plan going forward is to focus on observation information only, no correlator discussion.
    • Ephraim will be visiting USNO in middle July.
    • USNO Support contract is in process to be renewed (July 17 2015).
      • Renewed for FY2016
    • Dave: Would like to visit in late August or early September. Ephraim will schedule.
  • Next meeting on August 13th (Thursday).
n5172
n5173
Topic revision: r2 - 2015-07-09, EphraimFord
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