This presentation will introduce topics of note for the Earth Science Constellation (ESC) Mission Operations Working Group (MOWG) meeting being held in Toulouse, France from June 5-7, 2019

Case, Warren F.

NASA Technical Reports Server

Mission Operations Working Group
June 5-7, 2019
1
Operations Coordination Plan Status
Warren Case
Arctic Slope Regional Corporation
Earth Science Mission Operations Project
NASA/Goddard Space Flight Center
https://ntrs.nasa.gov/search.jsp?R=20190025762 2019-08-31T11:59:56+00:00Z
Mission Operations Working Group
June 5-7, 2019
Operations Coordination Plan Update
2
• At the MOWG meeting in June 2017, we presented a schedule 
for the Operations Coordination Plan document update.
• Subsequently, CloudSat and CALIPSO left the ESC orbit and 
a few missions experienced anomalies.
• As a result, we decided to delay the document update until the 
anomalies had worked their full course.
It is now time to restart the update process
Mission Operations Working Group
June 5-7, 2019
Operations Coordination Plan 
History
3
YEAR EVENT
2002 Landsat-7 and Terra publish their Morning Train Coincident 
Observations Implementation and Operations Plan
2003 A-Train Mission Operations Working Group (MOWG) formed.  
Agreements begin to be developed between MOWG teams.
2005 A-Train MOWG agreements published :
• Afternoon Constellation Operations Coordination Plan
• Afternoon Constellation Contingency Procedures
2008 Published Revision #1 of both documents (A-Train missions only)
2011 Published Revision #2 of both documents (A-Train missions only)
2015 Published the Operations Coordination Plan For The Morning and 
Afternoon Constellations (Document # 428-PLAN-011)
The current 2015 version expires in May 2020
Mission Operations Working Group
June 5-7, 2019
Operations Coordination Plan
Change Summary (1 of 2)
4
• Envelope size change (Constellation Change Request #17)
• Personnel changes
• Constellation Coordination System (CCS) screen updates
• Constellation evolution
 Earth Observing-1 (EO-1) decommissioning
 CloudSat exit
 CALIPSO exit
 C-Train creation
Mission Operations Working Group
June 5-7, 2019
Operations Coordination Plan
Change Summary (2 of 2)
5
• The C-Train was considered to still be a part of the 
Afternoon Constellation.
 Still crosses the equator in the afternoon
 Has periodic coincident science opportunity periods  with 
other A-Train satellites
 Follows precedent set by PARASOL which was not in the 
A-Train orbit after December 2009 but was considered part 
of the A-Train through their decommissioning in 
December 2013. 
• Many of the original requirements for A-Train 
constellation flying no longer apply to the C-Train, so the 
C-Train specific information was moved to a newly created 
Section 3.
Mission Operations Working Group
June 5-7, 2019
Front Matter
Specific Document Changes
SECTION CHANGE
Signature page • Updated to list the current signatories
Preface • Eliminated reference to pre-2015 versions. Updated
contact name and address.
Mission Operations Working Group
June 5-7, 2019
Section 1 – Constellation Coordination
Specific Document Changes
SECTION CHANGE
1.1 (“Purpose”): • Brought history up-to-date (e.g., EO-1 decommissioned, 
CloudSat’s exits, CALIPSO’s exit, C-Train, etc.)
1.2 (“Scope”) • Added a reference to the new Section 3 (“C-Train”)
1.3 (“Definition of Terms”) • Added “C-Train”.
• Added a note about the C-Train in the “Afternoon 
Constellation” definition.
• Updated the “Constellation Envelope” definition per CR 
#17 by changing the Margin from 2 km to 0.5 km.
1.4 (“Documentation”) • Updated with the latest Applicable and Reference 
document versions. Removed some old documents.
1.5 (“Operations Coordination”) • Updated the MOWG Executive Board contacts
1.7.1 (“Launch and Early Orbit 
Analysis”)
• Updated text to clarify launch execution errors, per Ted 
Sweetser comment.
1.8 (“Anomaly and Conflict 
Resolution Process”)
• Updated Figure 1-4 to remove EO-1
1.9 (“Constellation Exit 
Planning”)
• Updated text to require Exit Plans “at least 18 months” 
prior to expected exit, per MOWG action item #1706-01.
Mission Operations Working Group
June 5-7, 2019
Section 2 – Afternoon Constellation (1 of 2)
Specific Document Changes
SECTION CHANGE
2.1 (“Afternoon Constellation Coordination”) • Updated the science and operations leads.
2.2. (“Afternoon Constellation Overview”) • Updated text due to the C-Train creation
• Updated Figure 2-1 to show the current 
configuration
• Removed CS & CP from Table 2-2
2.3.1 (“Afternoon Constellation Placement 
Strategy”): 
• Updated Figure 2-2 to show the current 
control box configuration
• Removed CALIPSO and CloudSat info 
from text and Table 2-3. 
• Table 2-3 was relocated to be near the 
start of the section.
2.3.1.4 (“OCO-2 Placement Strategy”) • Updated OCO-2 MLTAN value wording, 
per Mark Vincent.
Mission Operations Working Group
June 5-7, 2019
Section 2 – Afternoon Constellation (2 of 2)
Specific Document Changes
SECTION CHANGE
2.3.2. (“Afternoon Constellation Drag Makeup 
Maneuvers”)
• Removed CALIPSO and CloudSat
2.3.3 (“Afternoon Constellation Inclination 
Adjust Maneuvers”)
• Added list of inclination adjust maneuvers 
(IAMs) conducted since 2015
2.4.1.2 (“Constellation-Related Flags”) and 
2.5 (“Afternoon Constellation Contingency 
Procedures”)
• Updated figures 2-6, 2-9, and 2-10 using 
the latest CCS screen captures
Mission Operations Working Group
June 5-7, 2019
Specific Document Changes
SECTION CHANGE
All section • New section created to capture the C-Train 
information
Section 3 – C-Train
Mission Operations Working Group
June 5-7, 2019
Specific Document Changes
SECTION CHANGE
4.1 (“Morning Constellation Coordination”) • Updated the science and operations leads 
in Table 4-1
4.2 (“Morning Constellation Overview”) • Deleted EO-1 from the text, Figure 4-1,
and Table 4-2
4.3 (“Morning Constellation Derived and 
Operational Requirements”)
• Updated text for EO-1 to reflect 
decommissioning. Deleted EO-1 from 
Table 4-3 and description of its 
maneuvers.
Section 4 – Morning Constellation
Mission Operations Working Group
June 5-7, 2019
Document Update Schedule
(Proposed)
12
DATE EVENT
July 31, 2019 MOWG feedback requested
August 31, 2019 Final version sent to MOWG teams
September 30, 2019 Final comments due from MOWG 
teams
October 31, 2019 Signature version sent to MOWG 
teams
November/December 2019 Sign at Fall 2019 MOWG meeting
Mission Operations Working Group
June 5-7, 2019
Questions and suggestions?
13
Mission Operations Working Group
June 5-7, 2019
Arigatou Gozaimasu
Merci
Thank you
14
Mission Operations Working Group
June 5-7, 2019
15
TERM EXPANSION
AM ante meridiem
CALIPSO or CP Cloud Aerosol Lidar and Infrared Pathfinder Satellite Observations
CR Change request
CCS Constellation Coordination System 
CNES Centre National D’Etudes Spatiales
CS CloudSat
EO-1 Earth Observing-1
ESC Earth Science Constellation
ESMO Earth Science Mission Operations
IAMs inclination adjust maneuvers
JAXA Japan Aerospace Exploration Agency
LaRC Langley Research Center
MLTAN mean local time at the ascending node
MOWG Mission Operations Working Group
NASA National Aeronautics and Space Administration
OCO-2 Orbiting Carbon Observatory-2
PARASOL Polarization and Anisotropy of Reflectances for Atmospheric Science coupled 
with Observations from a Lidar
USGS United States Geological Survey
Acronyms and Abbreviations
Mission Operations Working Group
June 5-7, 2019
16
Reference Section
History of the Constellation agreements 
(2003-2015)
(Originally presented June 2015)
Mission Operations Working Group
June 5-7, 2019
17
Afternoo  Constellation MOWG
1st Meeting
(Goddard Space Flight Center, March 2003)
MOWG was formed and began 
developing agreements and guidelines.
Mission Operations Working Group
June 5-7, 2019
Operations Coordination Plan History (1 of 4)
18
YEAR EVENT
2002 Landsat-7 and Terra publish their Morning (AM) Train Coincident 
Observations Implementation and Operations Plan
2003 - 2004 A-Train MOWG formed.  Agreements developed between MOWG 
teams.
2005 A-Train MOWG published agreements:
• Afternoon Constellation Operations Coordination Plan
• Afternoon Constellation Contingency Procedures
2008 REVISION #1 published (A-Train missions only)
2010 • A-Train / Landsat 5 passings highlighted the need for closer 
coordination between the 2 constellations.
• Subsequent discussions at MOWG meetings reinforced the need 
for one MOWG and one set of agreements.
2011 REVISION #2 published (still A-Train missions only)
Mission Operations Working Group
June 5-7, 2019
19
YEAR EVENT
2012 -
2013
• Extensive effort spent to standardize Definitions (e.g., safe exit orbit, 
Constellation Envelope, etc.).
• Operations Coordination Plan and the Contingency Procedures 
merged.  Document also expanded to encompass both the Morning
and Afternoon Constellations.
• Drafts issued to teams in July and December 2013. 
2014 • April 11 – Updated document presented at MOWG meeting at GSFC.
• July 21 – Interim update issued to add Morning Constellation and 
OCO-2 information
• September 19 – Interim update issued to fix some orbital 
configuration entries in Table 2-3, Figure 2-2, and Section 2.2.
• October 31 – Final document issued for signature approval.  This 
contained some minor updates based on feedback received at the 
MOWG meeting in October 2014 at NASA Langley Research Center 
(LaRC).
Operations Coordination Plan History (2 of 4)
Mission Operations Working Group
June 5-7, 2019
Merged 
document
Afternoon Constellation 
Operations Coordination 
Plan (February 2011)
Afternoon Constellation 
Contingency Procedures 
(February 2011)
“New” Operations 
Coordination Plan 
(May 2015) 20
Morning (AM) Train Coincident 
Observations Implementation 
and Operations Plan 
(September 2002)
Operations Coordination Plan History (3 of 4)
Merging documents
Mission Operations Working Group
June 5-7, 2019
21
YEAR EVENT
2015 • March – Final signature received from the mission teams
• March 31 – Document submitted to Earth Science Mission Operations 
(ESMO) Project Configuration Management process
• May 13 – Document approved and distributed to all teams
Operations Coordination Plan History (4 of 4)


Operations Coordination Plan Status

Abstract

Similar works

Full text

Available Versions

NASA Technical Reports Server