NOAA GOES SATOPS Morning Report – April 28, 2003  Day 118 

DMSP 

OPS45 rev 44643 from BOSS-A at 1000Z on April 25:  Crews could not establish link with BOSS-A. 

OPS 47 rev 41724 from BOSS-S at 1144Z on April 25:  Crews again unable to establish link with BOSS-A. Crews were able to establish link through ESOC equipment.  All pass objectives were met. 

OPS 48 rev 31252 from BOSS-B at 1427Z on April 25:  Call up support to test link with BOSS.  Link was established successfully.  GE Americom swapped out MODEM at SOCC. 

OPS 48 rev 31267 from FBKS-B at 1550Z on April 26:  Started playback late and did not have enough time to complete playback.  Stopped playback and placed recorded into smooth record for the next rev.  Cat 2 data loss of 2880 spacecraft seconds/ 72 playback seconds. 

OPS49 PRADS remains diverged due to an unstable gyro 3 bias. 

All other DMSP operations were nominal over the past 72 hours. 

POES 

NOAA-15 rev 25742 / F at 0250Z on April 27:  Problems with the IMUX on the “A” antenna prevented a clean post pass transfer of G1A and G3B.  G1A will be replayed on rev. 25743F.  The FCDAS was able to repair the “A” IMUX and 100% of G3B was retransferred clean at 0550Z. 

NOAA-15 rev 25743 / F at 0430Z on April 27:  Forward played and recovered 100% of G1A from rev 25742. 

NOAA-16 rev 13383 / B at 0250Z on April 28:  This monitor pass was scheduled simultaneously with the post-pass transfer of L3A rev 013382F.  The post pass transfer of L3A data was initially noisy from the IMUX and unusable, so the transfer was stopped and the Barrow data was monitored during the real time pass.  L3A had been received cleanly from the S/C, so the CDA operator suspected that the cause of the noisy data could be the heat build-up in the IMUX.  He removed a cover from the IMUX to enable it to cool-off for about 40 minutes and the data was later transferred cleanly. 

All other POES operations were nominal over the past 72 hours. 

GOES 

At 1446Z on April 25, a GOES-10 imager frame break was observed, 6 scan lost, due to loss of signal sync. 

At 0705Z on April 26, East/West maneuver stopped GOES-12 at 74.5W. 

At 2347Z on April 26, a GOES-10 imager frame break was observed, 138 scan lost, due to IPS memory full. 

At 1601Z on April 26, GOES-12 PCM and AGC data dropout.  Telemetry recovered within 2 seconds. Cause of dropout is unknown. 

At 0432Z on April 27, delta alarms were observed for the imager secondary mirror telemetry, requiring a suspension of the schedule and commanding the imager to nadir stare as per procedure.  Due to various temperature concerns at spacecraft midnight, the 0439Z GOES-12 southern hemisphere image was missed. 

At 1249Z on April 27, a GOES-10 imager frame break was observed, 4 scan lost, due to loss of signal sync. 

GOES-9 performance continue to be nominal.  It will support the JMA mission starting May 22. 

Keep-out-Zones (KOZ) operations for all spacecraft continue through day 116.  Schedules for GOES-East and GOES-West (which can be used to track the day-to-day image deletions due to KOZ) can be found at:
http://www.oso.noaa.gov/goes/koz-eclipse/koz-eclipse.htm 

Major upcoming GOES milestones (Note: These dates are subject to change) 

April 30:  GOES-8 drift start westward from 75 W