# Presentation: 266185

## EOS Aqua 

- Mission Operations Status
- Ellicott City, Maryland
- November 18, 2002
- Angie Kelly (_[Angelita.C.Kelly@nasa.gov](mailto:Angelita.C.Kelly@nasa.gov)_); tel. 301-614-5317
- and Bill Guit (_[William.J.Guit@nasa.gov](mailto:William.J.Guit@nasa.gov)_); tel. 301-614-5188

## Topics

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

## Aqua Mission Operations Responsibility

-     After the successful completion of Aqua’s 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.

## Aqua Mission Operations Instrument Interfaces

- Angie Kelly
- ESMO Science Interface Mgr
- Angelita.C.Kelly@nasa.gov

-  Project Scientist/PIs/TLs/
- Instrument Mgrs

- Bill Guit
- Aqua Mission Director
- William.J.Guit@nasa.gov

- Donovan Haxton
- FOT Instrument  Engineer

- Instrument Operations Team (IOT) Managers

- MODIS: Chad Salo; Tony Salerno
- CERES: Phil Brown; Kory Priestley,
-        Bill Vogler, Bruce Wielicki
- AIRS,AMSU-A,& HSB: Denis Elliott
- AMSR-E: MELCO:Takaaki Ishikawa
- AMSR-E NASDA: Kinji Furukawa

- IOT Engineers

## Earth Science Mission Operations (ESMO) Project 

**Mission Objective:  **The ESMO Project manages mission operations of NASA’s 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.

## Aqua Spacecraft Subsystem Status Summary

| Subsystem |  | Status |  |
| --- | --- | --- | --- |
|  | August | September | October |
| Command & Data Handling (C&DH) | GREEN | GREEN | GREEN |
| Communications (COMM) | GREEN | GREEN | GREEN |
| Electrical Power (EPS) | GREEN | GREEN | GREEN |
| Flight Software (FSW) | GREEN | GREEN | GREEN |
| Guidance, Navigation & Control (GN&C) | GREEN | GREEN | GREEN |
| Propulsion (PROP) | GREEN | GREEN | GREEN |
| Thermal Control (TCS) | GREEN | GREEN | GREEN |

## 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.

## Slide 8

## 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.*

## 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.

## 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 x’2’
**	****	**298	10/25	AMSR-E SPC Error Flag set to x’6’
**	**
- 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.*
**	****	**

## 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

## 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.

## Aqua Data Capture/Delivery Metrics

|  | Raw Data
Capture (1) | Data Received
at DAACs (2) | Data Received
at DAACs 
On Time (3) | NOAA
Data
Latency (4) | Comments on Significant Data Losses/Latencies |
| --- | --- | --- | --- | --- | --- |
| 10/20/02 – 
9/21/02  | 99.46% | 99.46% | 97.85% | 82.94% | Impact due to NOAA server reconfiguration.   
                              |
| 9/20/02 – 
8/21/02  | 99.999% | 99.999% | 97.75% | 87.13% | Data received at DAAC on time is lower this month due to EDOS experiencing several PDS Build Failures. |
| 8/20/02 – 
7/21/02 | 98.87% | 98.87% | 98.63% | 72.41% | NOAA metrics based only on last 10 days of month.
Automatic queuing of data replay from ground stations will start in September and should improve data latency.
Average latency of Aqua NOAA data is 3 hours 19 minutes. (goal is 3 hours) |

## Integrated Terra and AquaDeep 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.

## 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.

## Additional Charts

## Aqua Mean Local Time

## Aqua Beta Angle

## 2002 Leonid Forecasts

*For Earth and LEO*

- 2001 IMO values have had date and time
- shifted (by 17 hours) to facilitate comparison.

- ZHR profiles constructed using expression
- given by Brown (1999).

- 1767

- 1866

- ED44 - Sep 04, 2002

## Aqua Leonids Timeline

**SSR PB Required During Peak**

**Other Passes During Peak are Health & Safety Only (No Commanding)**

**S/C Not Behind Earth**

## Aqua Leonids Timeline

**SSR PB Required During Peak**

**Other Passes During Peak are Health & Safety Only (No Commanding)**

**S/C Not Behind Earth**

## Leonids 2002:  November 19 at 04:00:00 Z

## Leonids 2002:  November 19 at 10:30:00 Z

## Aqua FOT Activities for October(DOY 274-304)

- _DOY__	__Date__	__Activity__	__	__	__	__	__	__  _
- 276	10/03	USO-1 & USO-2 Frequency Adjust
- 			GIIS  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 x’2’
- 296	10/23	AMSR-E SPC Error Flag Cleared
- 297	10/24	Uplinked CCR #126: modification of MODIS Inhibit ID’s
- 298	10/25	AMSR-E SPC Error Flag set to x’6’
- 301	10/28	AMSR-E SPC Error Flag Cleared
- 			Uplinked CCR#132a: SCS-END’ing out CTC-A F8
- 302	10/29	Uplinked PR#147: Change Recharge Ratio 1.05 to 1.04
- 10/30	Held 16.384kbps telemetry through TDRSS CAM (s)
- 11/12/02	Drag Make-Up (DMU) Maneuver #5
- 319*	11/14/02	MODIS Roll Maneuver (near midnight on 11/14 which is DOY 319)

## 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 x’2’
**	****	****AMSR-E IOT notified and FOT cleared on DOY 296 (10/23).**
- 298	10/25	AMSR-E SPC Error Flag set to x’6’
**	****	****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.**

## 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