1. Mission Concept Status
PACE
Mission Concept Status
April 6, 2016
Goddard Contractors Associations

2. Mission Overview & Top Level Schedule
Science Objectives
The PACE mission will make global ocean color measurements for ocean ecology and global biogeochemistry along with polarimetery measurements on clouds and aerosols
Mission Concept
98° inclination; ~675 km altitude; sun sync
Sun-Synchronous (1pm MLT AN),
2 day global coverage
Design to Cost Mission
$805M with $100 Million for HQ Science
65% JCL required at KDP-C
Class C Mission
Launch Readiness Date August 2022
3 years Phase E (after commissioning)
10 years fuel
Schedule
Instrument(s) CDR
Observatory I&T
Spacecraft
CDR
Launch
Spacecraft
ATP
Phase A
Decommission
CY16
CY17
CY18
CY19
CY20
CY21
CY22
CY23
CY24
CY25
CY26
GCA PACE 4/6/2016

3. Mission Operations Center (GSFC) Mission Operations Center (GSFC)
System Architecture
TDRSS
Command/Telemetry
GPS
Space Segment
PACE
Launch Segment
Mission Data
Ocean
Biology
DAAC
(ESDIS Funded)
Atmospheres
DAAC
(ESDIS Funded)
CLASS
VAFB
Command / Telemetry
Science Processing
Mission Operations Center (GSFC)
Science Data Segment
(GSFC)
Science Operations
Science Software
White Sands Complex
Data Delivery
Data Delivery
Instrument Calibration
Science Validation
Ground Segment
DQM
Processing
Processing
Mission Operations Center (GSFC)
Science Data Segment
Program Science External Elements
Data Management
Data Management
Fairbanks
Primary T&C,
SMD Reception
Punta Arenas
Primary T&C,
SMD Reception
Svalbard
Primary T&C,
SMD Reception
White Sands
Alternate T&C,
SMD Reception
TrollSat
Alternate T&C,
SMD Reception
Vicarious Calibration System
Ingest
Ingest
PACE ROSES
Science Team
Research Community
GCA PACE 4/6/2016

4. PACE Project Organization
PACE Project Manager
A. Dress
Project Scientist
J. Werdell
Deputy Proj. Scientist (Ocean)
A. Mannino
Deputy Proj. Sci. (Atmosphere)
B. Cairns
670
Deputy Project Manager
K. McIntyre
Deputy Project Manager /
Resources
W. Sluder
210
Contracting
Officer
TBD
427
427
Financial
Manager
M. Gosselin
Chief Safety and
Mission Assurance
Officer
J. Blackwood
324
Mission Systems
Engineer
T. Feild
599
Resource Analyst
C. Greco
Vacant
Systems Engineer
A. Matuszeski
Earned Value Management
Vacant
Launch Vehicle
Manager
J. Satrom
Mission & Ground Operations Manager
R. Schweiss
427
Sr. Project Support
Manager
K. Opperhauser
General Business
P. Blackwood
490.5
427
427
Schedule Management
W. Paradis / Vacant
OCI Project Mgr.
R. Estep
OCI Deputy PM
M. Hill/P. Nguyen
Polarimeter
Instrument Manager
T. Dixon
Observatory
Manager
B. Weinstein
I & T Manager
TBD
Configuration / Data Management
L. Sullivan / TBD
Video Imaging & Photo. Rqmnts
Vacant
Information Technology
Vacant
GCA PACE 4/6/2016

5. Formulation Direction
GCA PACE 4/6/2016

6. PACE Mission Direction
PACE Mission was direct to GSFC via letter of direction from HQ on December 10, 2014
PACE Kick off meeting held on January 13, 2015
Mission defined as a Design to Cost development
Project allocated $705M for management, instruments, spacecraft, launch vehicle, and operations
HQ managed science allocated $100M for science, data processing and science systems
GCA PACE 4/6/2016

7. Establishing Mission Requirements
The Design to Cost (DTC) process dictates that the requirements are part of the trade process
The Science Definition Team (SDT) Report provides a set of objectives to be evaluated by the project
HQ provided a set of threshold requirements
At this phase of the mission, no agreed to baseline requirements have been established (per DTC process)
Notional baseline requirements have been established for the preferred mission concept and cost
The project uses the DTC process to determine what set of baseline requirements are achievable within the $705M budget and at the 65% cost confidence
This process will continue in Phase A and Phase B and be codified at KDP C.
GCA PACE 4/6/2016

8. Design to cost process
GCA PACE 4/6/2016

9. Design-To-Cost puts the Requirements in the Trade Space
Science (capability) and engineering requirements are part of the trade space
System total cost is a requirement and cannot be traded
Goal is to maximize the science capability at a high cost confidence throughout the life cycle (minimum of 65% is required)
At the mission gates, a well formulated single mission concept is planned to be recommended
GCA PACE 4/6/2016

10. Each Capability & Element has a Trade to be Evaluated
Mission Elements:
Spacecraft
Instruments
Launch Vehicle
MOC
Operations
Science
Engineering
Management
Mission Assurance
Schedule
Science
Capability
Risk
Cost
Technical
GCA PACE 4/6/2016

11. Pre-phase A Trades
GCA PACE 4/6/2016

12. ESD Program Science Priorities Defined
Global Ocean Color, Clouds and Aerosols Science
Needs to be fully compliant with threshold requirements
Enhanced Clouds and Aerosols Science
Maximized capability at lowest cost
Coastal Ocean Science*
Approximately 100 meter spatial resolution
Direct Broadcast of Science Data*
Requires an additional COMM (X-Band) service
* Pre-Phase A analysis shows that additional resources are needed to provide these capabilities in order to stay in within the 65% cost confidence
GCA PACE 4/6/2016

13. Pre-Phase A Activities
The project performed Pre-Phase A trade studies, and as a part of the Design to Cost Process, narrowed the focus of the number of studies through an iterative process
The Project held a two day Concept Decision Point (CDP) review on October 21st & 22nd with the following goals:
Opportunity for an early look at the concepts developed by the Project
Determine if a enough data has been collected to recommend an appropriate direction
Held a successful GSFC Technical Management & Cost (TMC) Review on Dec. 8-9th with the goal of assessing the following:
Technical concepts, schedules and cost
Held a successful Mission Concept Review (MCR) on March 8-10th
Presented the mission concept with focus on the project recommendations
GCA PACE 4/6/2016

14. Mission Trades Performed Across All Elements
PACE Mission Studies
Spacecraft
Ocean Color Instrument
Polarimeter
Launch Vehicle
With MOC/OPS
Vendor Provided
Hyper-Spectral Pushbroom m
Sequential
3MI
LSP Standard
Delivery In Orbit
Temporal Modulation
JPL PSMPI
LSP Rideshare
Multiband Scanner m
GSFC Provided
Spectral Modulation
Dutch SPEX
Delivery In Orbit w/ S/C
Hyper-Spectral Scanner m
MMS Concept
Amplitude Splitting
Commercial Service Provider
Coastal Camera
≤ 100m
LRO Concept
Dutch ASPIM
Unique Concept
UMBC HARPP
GCA PACE 4/6/2016

15. Concept Meets Most of the SDT Objectives & All Threshold Capabilities
SDT report has been evaluated and the recommended mission concept meets all but the following SDT objectives:
meter Ground Spatial Distance (GSD)
Direct Broadcast Service
5 year mission life
Threshold capabilities have been evaluated and the recommended concepts meet or exceed all required capabilities:
Phase A science and engineering studies will be performed to determine what additional capabilities can be provided within the 65% cost confidence (i.e.*):
GSD Determination & Orbital Altitude
Signal to Noise Allocations
Additional UV and SWIR Bands
Selective Redundancy
Detector trades for SWIR Channels
Direct broadcast
* Not the complete list additional trades
GCA PACE 4/6/2016

16. PACE Mission Schedule
GCA PACE 4/6/2016

17. KDP A planned for June 16th
Plans Forward
KDP A planned for June 16th
Acquisition Strategy Meeting ~ 1 month after KDP A
Mission Requirements Reviews planned for the Fall of 2016
GCA PACE 4/6/2016