EOS Aqua

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EOS Aqua Mission Operations Status Ellicott
City, Maryland November 18, 2002 Angie Kelly
(Angelita.C.Kelly_at_nasa.gov) tel.
301-614-5317 and Bill Guit (William.J.Guit_at_nasa.go
v) tel. [phone]
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Topics

• Introduction Mission Operations
  Responsibility/Interfaces
• Spacecraft Status
• Instrument Status
• Data Capture/Level Zero Processing Status
• Integrated Deep Space Calibration Plan
• Summary

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Aqua Mission Operations Responsibility

• After the successful completion of Aquas
  launch and early orbit phase, responsibility for
  operating the spacecraft was transferred from the
  Aqua Project to the Earth Science Mission
  Operations (ESMO) Project/Code 428 (Paul Ondrus,
  Head). Transition occurred on September 1, 2002.

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Aqua Mission Operations Instrument Interfaces
Angie Kelly ESMO Science Interface
Mgr Angelita.C.Kelly_at_nasa.gov
Project Scientist/PIs/TLs/ Instrument Mgrs
Bill Guit Aqua Mission Director William.J.Guit_at_nas
a.gov
Instrument Operations Team (IOT) Managers
Donovan Haxton FOT Instrument Engineer
IOT Engineers
MODIS Chad Salo Tony Salerno CERES Phil
Brown Kory Priestley, Bill Vogler, Bruce
Wielicki AIRS,AMSU-A, HSB Denis Elliott
AMSR-E MELCOTakaaki Ishikawa AMSR-E NASDA
Kinji Furukawa
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Earth Science Mission Operations (ESMO) Project
Mission Objective The ESMO Project manages
mission operations of NASAs Earth Science
Enterprise satellites with a goal for each
mission of successfully meeting its Level 1
requirements. Organizations For the Earth
Science Enterprise, Goddard is the designated
NASA center for mission operations, data
processing, and delivery of science data to
science teams and/or data archives. ESMO works
with the scientists, satellite and
instrument developers, and Goddard technical
experts to ensure mission success. Operational
Missions Earth Radiation Budget Satellite
(ERBS), EOS Terra, EOS Aqua, Total Ozone Mapping
Spectrometer (TOMS), Earth Probe, Tropical
Rainfall Measuring Mission (TRMM), and Upper
Atmosphere Research Satellite (UARS). ESMO
also supports Landsat-7 operations and will
manage operations for the EOS Aura, ICESat and
SORCE satellites after launch and on-orbit
checkout. Near Term Events ESMO will begin
managing satellite operations for the ICESat and
SORCE satellites in early CY2003.
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Aqua Spacecraft Subsystem Status Summary
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Spacecraft Status

• Spacecraft is operating nominally.
• Maneuvers are performed to keep orbit within
  requirement (/- 20 km) total of 5 maneuvers to
  date.
• Flight software corrections/enhancements have
  been implemented with flight software patches.

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Spacecraft Anomalies (since 9/1/02)

• DOY Date Activity
• 9/12 Safe State entry following postponement of
  drag make-up maneuver
• 290 10/17 SSR Partition 9 Data Loss (MODIS
  AIRS)
• Overflow of Partition 9 was caused by the loss
  of two consecutive passes at the polar ground
  stations.
• 295 10/22 Partition 9 Data Loss (MODIS AIRS)
• Data lost was due to an RF hit during the
  dump, which was identified after the data was
  written over on the SSR.

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Instrument Status

• All four instruments are operating nominally in
  science mode.
• AMSR-E Antarctic campaign has just been
  completed.
• MODIS lunar calibration is performed
  periodically.
• MODIS dropped commands problem in early
  September has been investigated IOT has
  provided additional procedures to ensure
  instrument safety has not re-occurred.
• AIRS cooler overstroke anomaly in October has
  been attributed to radiation by JPL.

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Instrument-Related Anomalies (since 9/1/02)

• DOY Date Activity
• AIRS 292 10/19 Focal Plane Cooler Over stroke
  Anomaly
• JPL attributes this to SAA proton radiation
  during high sun spot activity. Recovered on
  294 (10/21) nominally.
• AMSR-E 271 9/28 SPC Error Flag 1 Yellow
• 283 10/10 AMSR 6 GHZ HLNA Alarm, Yellow, for 16
  secs, back to green.
• 295 10/22 SPC Error Flag set to x2
• 298 10/25 AMSR-E SPC Error Flag set to x6
• HSB 267 9/24 Monitoring fairly regular
  occurrence of Motor Sync Flag and Scan Motor
  current red limit spike,(usually lasts 8 seconds,
  then returns to green state). Has occurred 35
  times since launch. JPL planning to discuss
  with TRW.
• MODIS 246 9/3 Dropped Night Mode command
• 289 10/16 Missed Commands from MCL (R/T
  Commanded)
• Operational error on MODIS FOT. Commanded
  in real-time to correct. MODIS has updated the
  scheduling constraints since.
• 299 10/26 MODIS Geo-location error. Instrument
  team has noticed /- 50 arcsecond errors in
  yaw axis.
• Problem under investigation.

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Upcoming Activities

• DOY Date Activity
• 11/19/02 Leonid Meteor Shower/Storm
• 11/20/02 Begin Test of AIRS Dual Cooler
  Operations
• 335 12/1/02 Start of AMSR-E Campaign (Antarctica
  and Okhotsk)
• 12/04/02 Next Solar Eclipse
• TBD mid-Dec Next Drag Make-up Maneuver

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Data Capture/Level Zero Processing Status

• Data Recovery of 99.46 exceeds Level 1
  requirement.
• Operations procedures for dumping the solid state
  recorder have been modified to maximize science
  return.
• NOAA data latency is improving with EDOS
  upgrades.
• Polar ground station anomalies are under
  discussion with the service providers.

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Aqua Data Capture/Delivery Metrics
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Integrated Terra and AquaDeep Space Calibration
Plan

• Integrated Terra and Aqua Plan worked with J.
  Ranson, Terra Project Scientist, and Claire
  Parkinson, Aqua Project Scientist
• Agreed to perform Terra DSC first in early 2003
• Plan presented to NASA Headquarters on August 28,
  2002
• Code Q (Office of Mission Safety and Assurance
  will review the Terra DSC risks and readiness on
  December 12, 2002 recommendation to G. Asrar in
  early January 2003
• Terra DSC NET March 2003
• The Aqua DSC will be performed approximately 4-6
  months after the Terra DSC.

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SUMMARY

• Spacecraft is performing nominally.
• Instruments are performing nominally and are
  generating great science data.
• The operations teams (FOT and IOTs) are
  executing the science plan.
• The EOS Ground System is performing well.
• Anomalies are being handled according to
  well-defined procedures.
• Good coordination between ESMO, the FOT, and IOT.

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Additional Charts
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Aqua Mean Local Time
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Aqua Beta Angle
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2002 Leonid Forecasts
For Earth and LEO
2001 IMO values have had date and time shifted
(by 17 hours) to facilitate comparison.
1866
1767
ZHR profiles constructed using expression given
by Brown (1999).
ED44 - Sep 04, 2002
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Aqua Leonids Timeline
S/C Not Behind Earth
Other Passes During Peak are Health Safety Only
(No Commanding)
SSR PB Required During Peak
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Aqua Leonids Timeline
S/C Not Behind Earth
Other Passes During Peak are Health Safety Only
(No Commanding)
SSR PB Required During Peak
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Leonids 2002 November 19 at 040000 Z
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Leonids 2002 November 19 at 103000 Z
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Aqua FOT Activities for October(DOY 274-304)

• DOY Date Activity
• 276 10/03 USO-1 USO-2 Frequency Adjust
• GIIS D Adjust (USO-2)
• 288 10/15 Uplinked CCR 125 MODIS 1553-B
  transactions swap
• 289 10/16 MODIS Roll Maneuver (-20º)
• MODIS Missed Commands from MCL (R/T Commanded)
• 290 10/17 Successful DMU 4 (71.125s)
• 8M07S Partition 9 Data Loss (MODIS AIRS)
• 291 10/18 Configuration Codes offset by 300Hz
  for XPDR-A
• 292 10/19 AIRS Focal Plane Over stroke Anomaly
• CERES Full Moon Scan
• 294 10/21 AIRS Recovery from Over stroke
• 295 10/22 2M18S Partition 9 Data Loss (MODIS
  AIRS)
• AMSR-E SPC Error Flag set to x2
• 296 10/23 AMSR-E SPC Error Flag Cleared
• 297 10/24 Uplinked CCR 126 modification of
  MODIS Inhibit IDs
• 298 10/25 AMSR-E SPC Error Flag set to x6
• 301 10/28 AMSR-E SPC Error Flag Cleared
• Uplinked CCR132a SCS-ENDing out CTC-A F8

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Instrument-Related Anomalies (October)

• DOY Date Activity
• 289 10/16 MODIS Missed Commands from MCL (R/T
  Commanded)
• Operational error on MODIS FOT. SCS 56 was
  commanded in real-time to correct. MODIS has
  updated the MMS constraints since.
• 290 10/17 8M07S Partition 9 Data Loss (MODIS
  AIRS)
• Overflow of Partition 9 was caused by the loss
  of two consecutive EPGN stations.
• 292 10/19 AIRS Focal Plane Cooler Over stroke
  Anomaly
• JPL attributes this to SAA proton radiation
  during high sun spot activity. Recovered on 294
  (10/21) nominally.
• 295 10/22 2M18S Partition 9 Data Loss (MODIS
  AIRS)
• Data lost was due to an RF hit during the dump,
  which was identified after the data was written
  over on the SSR.
• 295 10/22 AMSR-E SPC Error Flag set to x2
• AMSR-E IOT notified and FOT cleared on DOY 296
  (10/23).
• 298 10/25 AMSR-E SPC Error Flag set to x6
• AMSR-E IOT notified and FOT cleared on DOY 301
  (10/28).
• 299 10/26 MODIS Geo-location error Instrument
  team has noticed /- 50 arcsecond errors in yaw
  axis Problem under investigation.

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Flight Software Patch Summary

• Since launch, 217 patches to the FSW have been
  successfully completed
• CTC On-line 33 RT 1
• CTC Off-line 3 RT 0
• GNCC 113
• PC 11
• ISC 56