1. Aquarius Command and Control System pre-CDR

2. Aquarius Command and Control System pre-CDR Agenda

3. Agenda Aquarius Science Mission Overview
Aquarius/SACD Ground System Overview
NASA Ground Network AQ/SACD Support
Ocean Biology Network and Information Technology Security
Aquarius Operations Concept – Nominal
Aquarius Operations Concept – Anomaly
Aquarius Command and Control Requirements
Aquarius Command and Control Design
Aquarius Test Bed
Aquarius Command and Control Test Plan
Risks
Acronym List and Backup Slides provided

4. Aquarius Science Mission Overview

5. Aquarius Mission Science
Understanding the Interactions Between the Ocean Circulation, Global Water Cycle and Climate by Measuring Sea Surface Salinity
WOA 2001 NOAA/NODC
Global salinity patterns are linked to rainfall and evaporation
Salinity affects seawater density, which in turn governs ocean circulation and climate
The higher salinity of the Atlantic sustains the oceanic deep overturning circulation
Salinity variations are driven by precipitation, evaporation, runoff and ice freezing and melting

6. Science Objectives and the need for Satellite Measurements
World Ocean Atlas
This diagram shows the sampling distribution of all the historical surface salinity measurements
The data are much too sparse to monitor salinity variations over space and time.
Systematic global mapping is required to study the climatic interactions between the ocean and atmosphere
Science Requirements: Global coverage, 150 km and monthly space/time resolution, 0.2 psu accuracy, three year mission
Science Objectives:
Determine the mean global surface salinity field, including vast under-sampled regions
Resolve the seasonal cycle
Track interannual variations linked to changes in the water cycle and ocean currents
Improve El Niño predictability
Reduce the large uncertainty in the marine hydrological budget and its variability
86% of mean global evaporation and 78% of global precipitation occur over the ocean
Better initialize surface hydrology in climate models to improve climate prediction

7. The Aquarius/SAC-D Salinity Mission
Aquarius/SAC-D is designed to observe the global surface salinity field for three years and to achieve a monthly accuracy that will resolve the seasonal and interannual variability at 150 km scales.
Sensitivity vs Radiometer Frequency
MHz Protected Band
Tb=εT
ε = f(S, T, Freq, Incidence)
Approach:
Integrated L-band ultra-stable microwave radiometer-radar, 3 fixed beams, 390 km wide swath, 7-day repeat polar orbit
Monthly averages to reduce measurement noise and achieve 0.2 psu RMS accuracy
Three year baseline mission to resolve seasonal to interannual variability and robust mean field
Independent calibration and validation from global in situ ocean observing system
WOA 2001 NOAA/NODC

8. Aquarius Instrument Block Diagram

9. Aquarius/SACD System Overview

10. Division of Responsibilities
Pre-Launch PI
Defines science requirements
JPL
Scatterometer development
Project management
CONAE
SAC-D spacecraft and ground system development
GSFC
Radiometer development
Aquarius instrument data processing development
Aquarius instrument Mission Operations development
Post-Launch / Commissioning
Science management
Ad-hoc support as requested by the PI
PO.DAAC archive and distribution of validated Aquarius data
SAC-D spacecraft and ground system operation
Aquarius instrument data processing, archive, distribution
Aquarius instrument Mission Operations

11. NASA Ocean Biology Processing Group
Located: Goddard Space Flight Center
Total Archive size: TB
Distribution (> 2/04): million files
Aquarius support is implemented within the framework and facilities of the current NASA Ocean Data Processing System (ODPS) which has been successfully supporting operational, satellite-based remote-sensing missions since 1996, and its capabilities continue to evolve and expand to meet the demands and challenges of future missions
MISSIONS SUPPORTED
SeaWiFS : active
MODIS (Terra and Aqua) : present
CZCS / Nimbus-7 :
OCTS / ADEOS-I :
Glory data system prototype : 2009 launch
Aquarius / SAC-D : May 2010 launch
VIIRS / NPP : June 2010 launch
Community Processing & Analysis Software SeaDAS (1991- present)
oceancolor.gsfc.nasa.gov
Consolidated data access,information services and community feedback

12. Aquarius Ground System Responsibilities
NASA Management: Oversight of the overall effort, communication/coordination with other NASA organizations and centers and CONAE; oversight of science support, algorithm integration, QC, validation and in situ data support.
Contractor Management: Oversight of contract support staff, including hiring, tasking, review of deliverables and schedules.
Mission Operations: Technical lead for instrument operations and commanding support; interface to instrument engineers and CONAE mission operations.
Systems Engineering and Interface Definition: Technical lead for the data system effort; overall system design, implementation schedule, interface definition, data format specification, reviews and presentations.
Software Engineering: Technical lead for the level conversion / product generation software, including development of the Level 0-to-1 software and integration/packaging of the science (Level 2 and 3) processing software to be provided by the algorithm developers.
Software Development: Support for science code packaging, integration and testing.
Data Systems Support: Integrate the product generation software into the existing automated processing system, develop ingest modules, develop database tables for archive products, develop schedules and recipes for data acquisition, production and migration.
Systems Administration: Specify and acquire new processing and data storage hardware, integrate into existing data processing facility, verify/upgrade network capability for external data transfers.
Quality Control and Validation: Working with the Science Team, develop methodologies, tools, procedures and reports for operational QC; specify data and develop algorithms and tools for data and science algorithm validation.
In Situ Data Support: Work closely with the Aquarius Validation Data System (AVDS) to develop methods and tools for data analysis and quality control, building upon the existing SeaWiFS Bio-optical Archive and Storage System (SeaBASS).
Archive and Distribution: Incorporate Aquarius product browse, search, order and distribution into existing web-based Ocean Color capability and work with JPL PO.DAAC regarding “institutional” archive support requirements.
Benefits of Discipline-based Processing - Pool of existing expertise at 10 cents on the dollar

13. Aquarius Ground System Interfaces
ADPS ACCS
Aquarius Aquarius
Data Command &
Processing Control
System System

14. Aquarius Ground System Interfaces
S-Band
CONAE
X-Band
X-Band
Mission RF
Operations Services
Command
Center
Cordoba
Schedule Confirmation
And Reports
Aquarius Command Schedules
And Reports
Matera
ADPS ACCS
Aquarius Aquarius
Data Command &
Processing Control
System System

15. Aquarius Ground System Interfaces
S-Band
S-Band
CONAE
X-Band
Commands
Real-Time
Telemetry &
Coordination
X-Band
Mission RF
Operations Services
Command
Center
Wallops Svalbard Alaska McMurdo
NASA Ground Network
Vandenberg
Cordoba
Schedule Confirmation
And Reports
Aquarius Command Schedules
And Reports
Matera
ADPS ACCS
Aquarius Aquarius
Data Command &
Processing Control
System System

16. Aquarius Ground System Interfaces
S-Band
S-Band
CONAE
X-Band
Commands
Real-Time
Telemetry &
Coordination
X-Band
Mission RF
Operations Services
Command
Center
Wallops Svalbard Alaska McMurdo
NASA Ground Network
Vandenberg
Cordoba
Schedule Confirmation
And Reports
Aquarius Command Schedules
And Reports
Matera
ADPS ACCS
Aquarius Aquarius
Data Command &
Processing Control
System System
Calibration &
Instrument
Configuration
Change
Requests
Principal Investigator
and
Science Planning Team
Instrument
Engineering
Team

17. Aquarius Ground System Interfaces
S-Band
CONAE
X-Band
X-Band
Mission RF
Operations Services
Command
Center
Data
Archive
Cordoba
Matera
ADPS ACCS
Aquarius Aquarius
Data Command &
Processing Control
System System

18. Aquarius Ground System Interfaces
S-Band
CONAE
X-Band
X-Band
Data
Archive
Mission RF
Operations Services
Command
Center
Cordoba
3 - 5 downlinks / day
Matera
2 downlinks / day
ADPS ACCS
Aquarius Aquarius
Data Command &
Processing Control
System System

19. Aquarius Ground System Interfaces
S-Band
CONAE
X-Band
X-Band
Data
Archive
Pre-Processor
Cordoba
Aquarius Data and
Telemetry
Matera
ADPS ACCS
Aquarius Aquarius
Data Command &
Processing Control
System System

20. Aquarius Ground System Interfaces
S-Band
CONAE
X-Band
X-Band
Data
Archive
Pre-Processor
Cordoba
Aquarius Data and
Telemetry
Matera
ADPS ACCS
Aquarius Aquarius
Data Command &
Processing Control
System System

21. Aquarius Ground System Interfaces
S-Band
CONAE
X-Band
X-Band
Data
Archive
Pre-Processor
Cordoba
Aquarius Data and
Telemetry
Ancillary Data
Sources
Matera
ADPS ACCS
Aquarius Aquarius
Data Command &
Processing Control
System System

22. Aquarius Ground System Interfaces
S-Band
CONAE
X-Band
X-Band
Data
Archive
Pre-Processor
Cordoba
Aquarius Data and
Telemetry
Ancillary Data
Sources
Matera
ADPS ACCS
Aquarius Aquarius
Data Command &
Processing Control
System System
Algorithms &
Science Code
Evaluation
Products
Science Team
and
Algorithm Providers

23. Aquarius Ground System Interfaces
S-Band
CONAE
X-Band
X-Band
Data
Archive
Pre-Processor
Cordoba
Aquarius Data and
Telemetry
Ancillary Data
Sources
Matera
ADPS ACCS
Aquarius Aquarius
Data Command &
Processing Control
System System
Algorithms &
Science Code
Evaluation
Products
Science Team
and
Algorithm Providers
AVDS
Aquarius Validation
Data System
Insitu Data
Aquarius
Data

24. Aquarius Ground System Interfaces
S-Band
CONAE
X-Band
X-Band
Data
Archive
Pre-Processor
Cordoba
Aquarius Data and
Telemetry
Ancillary Data
Sources
Matera
ADPS ACCS
Aquarius Aquarius
Data Command &
Processing Control
System System
Algorithms &
Science Code
Evaluation
Products
Science Team
and
Algorithm Providers
Level-1 & Level-3
Aquarius Data
AVDS
Aquarius Validation
Data System
Insitu Data
Aquarius
Data
PO.DAAC
Aquarius L1, 2, 3 Data
Ancillary Data
Feedback
Data Users
and
Science Team
Software
SeaDAS

25. Aquarius Ground System Interfaces
S-Band
S-Band
CONAE
X-Band
Commands
Real-Time
Telemetry &
Coordination
X-Band
Data Mission RF
Archive Operations Services
Command
Center
Wallops Svalbard Alaska McMurdo
Pre-Processor
NASA Ground Network
Vandenberg
Cordoba
Aquarius Data and
Telemetry
Schedule Confirmation
And Reports
Aquarius Command Schedules
And Reports
Ancillary Data
Sources
Matera
ADPS ACCS
Aquarius Aquarius
Data Command &
Processing Control
System System
Calibration &
Instrument
Configuration
Change
Requests
Algorithms &
Science Code
Evaluation
Products
Principal Investigator
and
Science Planning Team
Instrument
Engineering
Team
Science Team
and
Algorithm Providers
Level-1 & Level-3
Aquarius Data
AVDS
Aquarius Validation
Data System
Insitu Data
Aquarius
Data
PO.DAAC
Aquarius L1, 2, 3 Data
Ancillary Data
Feedback
Data Users
and
Science Team
Software
SeaDAS

26. NASA Ground Network AQ/SACD Support

27. Ocean Biology Network and Information Technology Security

28. Aquarius Operations Concept
Nominal

29. Operations Concept for Achieving Science Objectives
Orbit description
Sun-synchronous, 6pm ascending node
98 degree inclination
657 +/- 1.5 km altitude
7 day repeat track
Orbit maneuvers approximately every 28 days (delta V)
+/- 10 km box maintenance
Box tolerance expanded during solar max
Inclination maneuvers possible but not planned into the mission
Aquarius operated continuously
AQ Science data loss budget
2.4 days per month (30.4 days)
Based on maintenance of 0.1 degree thermal stability for AQ
Optional Cold Sky Calibration Maneuvers
Estimated frequency of 1/month
Thermal transient expected to degrade science data for about 1 orbit

30. AQ/SACD Communications Links
S-band 4kbps uplink
S-band 4kbps downlink
Real time Housekeeping Telemetry (HKT)
4000 byte frame
SAC-D, Aquarius and other instrument HKT (8 instruments total)
X-band 16Mbps downlink
Stored HKT; identical format to the real time HKT frame
Stored science data for all instruments
CCSDS
Aquarius allocation is 4Mbps

31. Operations Ground Station Network
Primary station is CONAE’s ETC facility in Cordoba, Argentina
Aquarius requires a download at least once every 14 hours to avoid buffer overwrite
Single station provides approximately one d/l per 10 hours if both passes taken
Orbit track typically takes AQ/SACD over ETC for two successive ascending passes and two successive descending passes.
One station outage (one “pass set”) results in data overwrite
Margin provided via the addition of a second X-band station
Italy’s ASI provides the Matera site
Global location is ideal for ETC backup;
approximately 90 longitudinal degrees from Cordoba.
Higher latitude offers 3 successive ascending or descending passes vs. ETC’s 2.
Dual station outage now required to cause data loss.
System supports use of all available Matera passes
ASI’s Malindi site in Kenya can be used for S-band downlink
Provides “first look” opportunity for launch vehicle separation, solar array deployment
NASA Ground Network S-band support
S-band uplink/downlink
Emergency support
Maneuver support

32. Nominal Aquarius Commanding
Nominal Aquarius commanding includes
Downlink commands
Possible software maintenace commands
Cold Sky Calibration targeting requests
Possible Science commanding includes
Radiometer control commands
Normally runs as a state machine from on-board Look Up Table (LUT)
Science may request a change to a different LUT (7 pre-programmed, 1 programmable)
Automatic thermal control system commands
Setpoint, Power, Integral, Derivative Parameter changes

33. Cold Sky Calibration
The Cold Sky Calibration is a pitch maneuver under the control of CONAE but requested by the Aquarius science team
Purpose is to rotate Aquarius in the direction of cold space
Specific cold location is selected by AQ science team
Serves as an low temperature calibration point for the Radiometer
Maneuver steps are to:
Pitch toward cold sky
Cold Sky dwell is planned to be approximately 1 minute
Pitch in the reverse direction back to earth pointing
Maneuver occurs away from ground support
NGN provides pre- and post- look pass support

34. Aquarius Downlink Two Aquarius instruments: Support subsystems:
Radiometer (primary)
Scatterometer (ancillary)
Support subsystems:
Automatic Thermal Control
Power Distribution Unit
Instrument Command and Data Subsystem (ICDS)
Antenna, feeds and structure
All subsystems forward science and HKT in fixed formats to the ICDS
ICDS packages HKT and science every 1.44 seconds
Stored in the ICDS RAD6000 RAM
110 MB of storage capacity
d/l command downloads buffer in circular fashion until stop cmd received
Passed through CCSDS formatter and on to X-band transmitter
ICDS packages HKT and software messages in packetized form (vs. fixed format) every 8 seconds.
500 bytes
Passed to SACD and inserted into 4000 byte frame
Stored in SACD Mass Memory
When S-band transmitter is on, data is also sent to the ground in real time

35. High Level Description: Aquarius Command Planning Cycle
Aquarius operations:
prepares two weeks of command loads each week
Forwards commands to the Planning System at ETC
Receives acknowledgement report that they were accepted as feasible or not
Approximately one week is available for changes
Then Observatory planning cycle is entered
Aquarius commands are incorporated into SACD and other instrument command plans
Final plan is reported back to Aquarius operations
Plan is uploaded with any duplicate commands deleted

36. Aquarius Operations Concept
Anomaly

37. Anomaly Resolution Process
Process developed jointly by JPL, GSFC, CONAE Operations Assurance
In flight, the anomaly process is led by CONAE.
Process is captured in SACD document: SD , SAC-D FLIGHT ANOMALY REPORTING PROCEDURE
Please note that the Science Operations Control Board (SOCB) in Aquarius documentation equates to the SACD Flight Anomaly Review Board (SAFARB) in CONAE documentation.
Instrument anomalies will be resolved by Aquarius team with process still led by CONAE
Process:
Notify management (CONAE, then instrument)
Establish a resolution team led by a control board
Resolve the anomaly under control board authority
Teams will rely on AQ and SACD testbeds to create and test problems and scripts
Report the anomaly via the CONAE Flight Anomaly Report (FAR) system
The Goddard Flight team will also file detailed Aquarius instrument anomaly reports on the Goddard reporting system. Aquarius reports will be sharable with JPL.

38. MOM SAC-D Instrument Ops Team SAC-D Ops Team Other data observer
Report anomaly
SAC-D Ops Team
MOM
Report anomaly
Other data observer
Report anomaly
Report anomaly
Aquarius Ops Team
Any anomaly observer(s) immediately report the detected ground or Observatory problem to the Mission Operations Manager (MOM)

39. MOM Gathers CONAE analysis team to identify problem source 2
Based on analysis result, MOM selects an anomaly resolution team 3 1a
May require AQ or 3rd party instrument support; obtain via SOCB
MOM 1b
Each SOCB member alerts his system team and selects anomaly resolution team members as needed
Notifies Science Operations Control Board of the anomaly 4
MOM initiates anomaly response and notification to formulate response team

40. MOM Anomaly resolution team Ops Team
Status to teams
Status to teams
SOCB
Anomaly resolution plan approval
Cmd Plan execution reports (status reports)
Anomaly resolution team
Command plans
Command plans
Ops Team
MOM
Observed telemetry changes and observations
Observed telemetry changes and observations
MOM manages anomaly resolution process with support of SOCB
Feedback to MOM; “fix worked” or “more to be done” or “need more help”, etc

41. MOM Final Report Anomaly resolution team Ops Team
Aquarius Final Report to GSFC Anomaly tracking system if appropriate
SOCB/CONAE
Anomaly notes and logs
Final Report
Anomaly resolution team
Ops Team
MOM
Anomaly notes and logs
Anomaly notes and logs
MOM generates and distributes final report; Aquarius anomalies may require an additional, separate report filed at GSFC by AQ GS

42. Aquarius Command and Control Requirements

43. ACCS Requirements, Verification and Validation Matrix
(AQ) G. Feldman
Verification Method
Test ID
L3-AQ-f-148
Requirement: The Aquarius Command and Control Segment shall review CONAE Operations Reports to verify that Aquarius command scripts are transmitted to the Observatory as planned.
Demonstration
Test 1; include in ACCS operations procedures
L3-AQ-f-76
Requirement: The complete data file sharing interface between the SAC-D MOCC and the AQ GS ADPS shall be defined in the Aquarius Ground System Interface Control Document.
Analysis
As captured in the stated ICD.
L3-AQ-f-78
Requirement: The Aquarius Command and Control Segment shall generate Aquarius instrument commands plans on the SAC-D MOC Scheduler using Aquarius commands and scripts stored on the CONAE database as defined in the SAC-D Ground to Aquarius Ground System ICD.
Tests 1, 2

44. ACCS Requirements, Verification and Validation Matrix
L3-AQ-f-146
Requirement: The Aquarius Command and Control Segment shall deliver to the SACD Ground System on an on-going basis for the life of the Aquarius mission the most recent approved versions of all Aquarius command scripts, telemetry scripts, telemetry pages, standard operating procedures and contingency operating procedures necessary for the ETC flight operations team to control and monitor the Aquarius instrument during real-time operations.
Analysis, Demonstration
Analysis as captured in AQ GS operations procedures and processes. Demonstration via tests 1, 2.
L3-AQ-f-85
Requirement: The Aquarius Command and Control Segment shall monitor Aquarius instrument health and status by displaying and trending: instrument high rate science data; stored Aquarius House Keeping Telemetry; and selected SACD House Keeping Telemetry.
Demonstration
Test a, k, m

45. ACCS Requirements, Verification and Validation Matrix
L3-AQ-f-86
Requirement: The Aquarius Command and Control Segment shall monitor Aquarius instrument telemetry limits and generate indications of out of limits conditions such as audible alarms, printouts, or highlighted values on displays.
Demonstration
Tests a, k, m
L3-AQ-f-96
Requirement: The Aquarius Ground System shall generate procedures for the test, validation via the Aquarius test-bed, and upload of instrument software patches via the CONAE MOC.
Analysis
Ensure these procedures are included in the AQ GS operations procedure set.
L3-AQ-f-99
Requirement: The Aquarius Command and Control Segment shall have the capability of validating all real time commands to the Aquarius instrument on the Aquarius test-bed.
Test l

46. ACCS Requirements, Verification and Validation Matrix
L3-AQ-f-100
Requirement: The Aquarius Command and Control Segment shall submit all real-time command procedures not previously approved to the Science Operations Board for approval.
Analysis
As captured in ACCS operations processes
L3-AQ-f-131
Requirement: The Aquarius Command and Control Segment shall document and place under configuration control all commands, scripts, flight software patches, and procedures that have been approved by the Science Operations Control Board.
As captured in ACCS operations processes and procedures
L3-AQ-f-111
Requirement: The ADPS shall support the archive of the full Aquarius mission data set including science, ancillary, and housekeeping telemetry data.
Ensure adequate storage exists (analysis completed)

47. ACCS Requirements, Verification and Validation Matrix
L3-AQ-f-136
Requirement: The Aquarius Ground System shall be designed to be testable and verifiable consistent with mission test and verification plans.
Analysis
Completion of the AQ GS V&V matrix.
L3-AQ-f-152
Requirement: The Aquarius Ground System shall provide a physical location for the Aquarius Testbed that accommodates the size, power, cleanliness, and thermal environment specified by the JPL Testbed team.
Receive size and environment specifications from JPL and establish a space that accommodates those.

48. ACCS Gold Rules Compliance Matrix
Initial Gold Rules Compliance Matrix was generated in May, 2005
Basis was the 12/10/04 release
Verified full compliance; no waivers required
Reviewed again by Steve Scott and David Durham (Aquarius Mission System Engineer) in Compliance verified.

49. ACCS Documents

50. ACCS Documentation L3 Aquarius Ground System and Test Requirements
Final version available for distribution
Aquarius Ground System Integration, Test and Training Plan AQ
Project Service Level Agreement
451-PSLA-SACD
Aquarius Operations Processes and Procedures
Future document
ACCS elements of the Aquarius Ground System to Science Team ICD
Future document; draft state
AQ GS – SACD GS ICD is a CONAE document
Most recent version available for distribution. Final version due 4/18/08
Aquarius/SACD Mission Plan is a CONAE document
Aquarius/SACD Flight Anomaly Reporting Procedure is a CONAE document.
Most recent version available for distribution. Final version due 4/18/08.

51. ACCS Configuration Management
Ocean Biology Configuration Control via Subversion CM Tool
All ACCS code and documentation under CM
Command and telemetry scripts
Executables (CONAE tools)
Processes and procedures
Instrument team receivable documents
Subversion offers web-based access
supports shared configuration control of selected files with SACD
AQ command and telemetry dictionaries
AQ/SACD telemetry scripts and pages
CONAE procedures for AQ operations
Subversion CM structure has been built and populated with preliminary documents

52. Aquarius Command and Control Design

53. AQ/SACD Ground System Overview
4kbps uplink Sband
4kbps downlink Sband
16Mbps downlink Xband
observatory
CGSS
CONAE Ground System Services
FGSS
Foreign Ground System Services
CODS
CONAE Orbit Dynamics Service FC
Flight Control Subsystem
SOC
Spacecraft Operations Center
SOP
Spacecraft Operations Planning
FUSS
Foreign User Segment Services

54. AQ/SACD GS Uplink Data Flow
Nominal cmd path
observatory
4kbps uplink Sband
Alt/Emerg cmd path RF
CGSS
CONAE Ground System Services
FGSS
Foreign Ground System Services
ARs
Action Requests
Command frames
SOC
Spacecraft Operations Center FC
Flight Control Subsystem
Pass plans
CODS
CONAE Orbit Dynamics Service
reports
reports
SOP
Spacecraft Operations Planning
Pass plans
FUSS
Foreign User Segment Services
Reports / ARs

55. AQ/SACD GS Low Rate Downlink Data Flow
Nominal 4kbps d/l path
4kbps downlink Sband
observatory
Emerg. 4kbps d/l path RF
CGSS
CONAE Ground System Services
FGSS
Foreign Ground System Services
CODS
CONAE Orbit Dynamics Service
RT Tlm FC
Flight Control Subsystem
SOC
Spacecraft Operations Center
RT EU Tlm
RT GPS / AOCS Tlm
SOP
Spacecraft Operations Planning
FUSS
Foreign User Segment Services
Orbit Files
RT EU Tlm Files

56. AQ/SACD GS High Rate Downlink Data Flow
Nominal 16Mbps d/l path
16Mbps downlink Xband
observatory RF
CGSS
CONAE Ground System Services
FGSS
Foreign Ground System Services
Stored Data FC
Flight Control Subsystem
SOC
Spacecraft Operations Center
CODS
CONAE Orbit Dynamics Service
Stored Data
Stored GPS / AOCS Tlm
SOP
Spacecraft Operations Planning
FUSS
Foreign User Segment Services
Stored Science and AQ/SACD HKT Files

57. AQ GS Overview I CODS SOC SOP FUSS CONAE Orbit Dynamics Service
Spacecraft Operations Center
Emergency Voice, , Fax
SOP
Spacecraft Planning Center
Action requests
FUSS
Foreign User Segment Services
reports
Orbit Files
RT, Stored Data Files

58. AQ GS Overview II CODS SOC SOP ADPP CONAE NASA FUSS ADPS ACCS
CONAE Orbit Dynamics Service
Emergency Voice, , Fax
SOC
Spacecraft Operations Center
Science, HKT Files
SOP
Spacecraft Operations Planning
Orbit Files
ADPP
Aquarius Data Pre-processor
Action requests
CONAE
NASA
Science, HKT, Orbit Files
FUSS
reports
ADPS
Aquarius Data Processing System
ACCS
Aquarius Command and Control System
Science, HKT Files

59. Uplink Interfaces, Data Flow
observatory
RF cmds
RF cmd ack
SOP
Spacecraft Operations Planning
SOC
Spacecraft Operations Center
CGSS FC
Flight Control
Pass Plans
Cmd Frames
Pass Plans
cmd ack
reports
Cmd logs
Action requests
CONAE
NASA
ACCS
Aquarius Command and Control System
reports

60. ACCS Uplink Tools and Actions
SOP
Spacecraft Operations Planning
Action requests
commands
targeting
CONAE
NASA
ACCS
SInter
Scheduler Client

61. SInter
SInter (Spacecraft Interpreter), a CONAE deliverable command scripting tool
SInter example script (next slide)
SInter used pre-flight
to command the instrument during I&T
to populate CONAE “Basic Commands” database
All Aquarius Basic Commands have been created and run successfully against the instrument computer (ICDS)
SInter used during flight against the Aquarius testbed
for science change scripting
for anomaly resolution scripting
Software executables and scripts are maintained under CM

62. Example SInter Command Script
scl AQ::S_FOL_mode(integer: beam)
require
beamValues: beam >0 && beam < 4;
description
-- beam_select: beam1=1, beam2=2, beam3=3
local
bytes : OpCode,Param,chksum; {
OpCode = Integer.AsShort(24577 );
Param = Integer.AsShort(beam );
chksum = (OpCode^Param);
aqsd.cmd.aq( OpCode + Param + chksum ); }

63. Scheduler Client A CONAE deliverable
GUI that supports Spacecraft Operations Planning
Resides on the ACCS
Interfaces with the CONAE Spacecraft Operations Planning system
Action Requests trigger CONAE planning activities
For Aquarius, these are
Aquarius commands
Aquarius Flight software patches (potential)
Aquarius targeting (cold sky calibration) via Observatory maneuver

64. Action Requests Generated via the ACCS Scheduler Client (CONAE)
Sends to SOP via TCP/IP+HTTPS (ACCS-SOC_AR interface )
Checks Feasibility
An individual Action Request includes:
scl basic commands
command parameters
desired execution times
preconditions for execution
Action Requests support:
commands
flight software patch uploads
cold sky targeting (wide system action)

65. Action Requests Generated via the ACCS Scheduler Client (CONAE)
sends to SOP via TCP/IP+HTTPS (ACCS-SOC_AR interface )
checks Feasibility
An individual Action Request includes:
scl basic commands
command parameters
desired execution times
preconditions for execution
Action Requests support:
commands
flight software patch uploads
cold sky targeting (wide system action)

66. Command Process
Example Only

67. Flight Software Patch Process
Patch purpose: anomaly resolution
JPL responsible for designing and bench testing patch
ACCS responsible for operational testing against test bed
Science Operations Control Board approves patch activity
All patches are formatted as a sequence of Aquarius commands
Nominal Action Request process followed
Can be uploaded in realtime or as time-tagged cmds
Other commands can be interspersed
Aquarius provides notification of complete receipt of patch
Flight operations executes final “install” command in real time

68. Flight Software Patch Sequence
I_module_start
identifies the component ID to be patched
ID inherently specifies whether patch is new or replacement s/w
tells the FSW how many commands make up the patch
Automatically aborts any patch in progress
I_module_part
One to many 60 byte commands containing patch data and a sequence number
I_fragment
One or more patch commands of 58 bytes or fewer
I_module_end
Contains patch checksum
Receipt causes instrument to verify all patch commands received
Sends messages to ground containing any missing patch sequence numbers
Ground may send missing data, then re-issue I_module_end
If all commands received, instrument computes checksum
Failed checksum forces discard of patch
“Failed” message inserted into HKT
Otherwise a “success” message is sent in HKT
I_install_patch
Sent in real-time once successful I_module_end is confirmed
Includes component ID that must match the I_module_start component ID

69. Cold Sky Calibration Process
Primarily a CONAE task requested by the Aquarius Science team
Science team places request through the ACCS (TBD format)
Observatory targeting information provided
SCI-ACCS restricted access account utilized as the interface between science team and ACCS
ACCS submits “Wide System Action” AR via the Scheduler Client, specifying cold sky maneuver and target.

70. Downlink Interfaces, Data Flow
CODS
CONAE Orbit Dynamics Service
SOP
Spacecraft Operations Planning
SOC
Spacecraft Operations Center
RT, Stored Data Files
Orbit Files
ADPP
Aquarius Data Pre-processor
CONAE
NASA
Action requests
ADPS
Aquarius Data Processing System
ACCS
Aquarius Command and Control System
reports

71. Aquarius Downlink Data
RT, Stored Data Files
SOC
Spacecraft Operations Center
Orbit Files
ADPP
Aquarius Data Pre-processor
CONAE
Observatory RT HKT files Observatory ST HKT files Aquarius Science Files, time sorted, duplicates deleted
NASA
Orbit Files
Observatory RT HKT files Observatory ST HKT files Aquarius Science Files
ACCS
Aquarius Command and Control System
ADPS
Aquarius Data Processing System

72. Aquarius Data Pre-processor (ADPP)
RT, Stored Data Files
SOC
Spacecraft Operations Center
Orbit Files
ADPP
Aquarius Data Pre-processor
CONAE
NASA
ADPS
Aquarius Data Processing System
ACCS
Aquarius Command and Control System

73. Aquarius Data Pre-processor (ADPP)
Purpose: to reduce bandwidth requirement
Unable to test the actual link until new MOC is installed
Initial testing provides baseline but no sure metrics
Two ADPP systems placed at CONAE
Incoming data archived to both
Data fetched by ADPS from only primary ADPP
Configuration and scripting controlled by Goddard
Physical maintenance (if any) performed by CONAE
Sized to accommodate the entire mission, all file types, with margin
ADPP retrieves orbit files from CODS
SFTP “pull”
Retrieves Real time Observatory HKT files from SOC
4000 byte frames sent via S-band link
Frames contain SACD, Aquarius, and other instrument HKT
Retrieves Stored Observatory HKT files from SOC
Retrieves Aquarius science files from SOC
Time sorts data
Deletes duplicates

74. Aquarius Data Processing System
RT, Stored Data Files
SOC
Spacecraft Operations Center
Orbit Files
ADPP
Aquarius Data Pre-processor
CONAE
NASA
ACCS
Telemetry Viewer
ADPS
Aquarius Data Processing System
Analysis Software

75. Aquarius Data Processing System
Part of the Ocean Biology Processing System
ADPS support for the ACCS includes:
Archive of all mission data including all HKT, science and orbit files
Forwards HKT files to the ACCS Telemetry Viewer tool
Sole source of Aquarius software messages
Duplicates HKT stored in science files, but at lower sampling rate
Provides science and HKT file access to the Aquarius analysis tools

76. ACCS Telemetry Viewer SOC ADPP CONAE NASA ACCS ADPS
RT, Stored Data Files
SOC
Spacecraft Operations Center
Orbit Files
ADPP
Aquarius Data Pre-processor
CONAE
NASA
ACCS
Telemetry Viewer
ADPS
Aquarius Data Processing System
Analysis Software

77. ACCS Telemetry Viewer CONAE deliverable Purpose is to:
Be able to provide Aquarius telemetry viewing tools to CONAE
Be able to view data exactly as CONAE does to support discussion of observations, anomaly diagnosis and resolution, etc.

78. Example Telemetry Viewer Script
tsl Tlmy::AQ.EXT_Temps_OMT1_Hprobe_Temp.Raw()
return bytes : out
label
-- AQ.EXT_Temps_OMT1_Hprobe_Temp.Raw
require
-- The script can be executed if a new 'AQ.Mechanical_Thermal.Message' arrived.
MessageArrived: AQ.Mechanical_Thermal.Message != <hex\ >;
description
-- raw AQ.EXT_Temps_OMT1_Hprobe_Temp {
out = bytes.extract(AQ.Mechanical_Thermal.Message, 0,1); }
(Show file)

79. ACCS Analysis Software
RT, Stored Data Files
SOC
Spacecraft Operations Center
Orbit Files
ADPP
Aquarius Data Pre-processor
CONAE
NASA
ACCS
Telemetry Viewer
ADPS
Aquarius Data Processing System
Analysis Software

80. ACCS Analysis Software
Based on the Radiometer FM I&T Analysis tools developed at Goddard
Development plan:
Expand tools to include remaining instrument data
Convert tools from Windows to Linux OS
Investigating whether to convert tools from Matlab to IDL
Include processing capability for HKT and ancillary data
Mimic existing Ocean Biology web tools: Generate daily and long-term graphs; investigate creating mid-resolution graphs
Post graphs to the Web via existing Ocean Biology tools
Provide existing interactive capability from local machine(s)

81. ACCS Hardware and Link Analyses
Analysis showed that the following requirements apply to the ACCS computer:
Ultra-secure network connections to CONAE and the ADPS (Windows OS)
Disk storage: 64 MB
Executables
Command and telemetry scripts, pages (custom elements)
Working files (playback data)
Applies 100% margin
RAM: 250 MB
Assessed by examining handle, thread, and process statistics with tools in use, especially at start-up
Extracted from basis of test computer providing 504 MB RAM
Processing speed: 1.5 GHz
Assessed by examining CPU usage statistics while tools were active, especially at start-up
Tools were run on 1.5 GHz processor and demonstrated startup usage of 33% and post-start-up of 8% or less
Specifications of existing ACCS hardware:
Disk storage: 255 GB
RAM: 2 GB
Processing speed: 3.01 GHz
Link test results with CONAE
10 day link test; SAC-C vs. SAC-D link
87% success rate; transfers also under 12 minutes for 550 MB file (approx AQ fileset size)
15% of total transferred but with very slow rates (~ 2 – 3 hours)
ADPP employed to increase margin
Examining alternate network options
True testing delayed until MOC upgrade in 2008

82. Aquarius Test Bed

83. Aquarius Test Bed Requirements
Information: The AQ Flight Operations Testbed is a tool to investigate and recover from AQ anomalies, test unapproved command sequences and operations procedures, and validate FSW code uploads
Requirement: All elements of the AQ flight instrument shall be replicated or simulated within the AQ Testbed
Requirement: All elements of the AQ Testbed shall provide flight like telemetry and science responses to commands.
Requirement: The ADPU element shall provide flight-like power levels to the Testbed.
Requirement: The ICDS element shall provide flight-like Scatterometer science processing, ATC control, DPU communications, ground command handling, FSW upload capability, HKT handling and science packet handling.
Requirement: The Testbed command and telemetry tools shall be identical to the Operational tools.
Requirement: The Testbed command and telemetry tools shall interface with the AQ instrument via a SAC-D simulator.
Information: The SAC-D simulator emulates the SAC-D Command and Data Handling System, the 1553 bus, the GPS 1PPS signal and interfaces to both the SAC-D command and telemetry tools and the AQ instrument portion of the Testbed.

84. Thermal/deployment telemetry Simulator
Command and Data Test-bed
Aquarius Command and Data Test-bed
(at GSFE after commissioning phase is complete. Before that: at JPL)
SAC-D Cmd/Tlm Tools
S/P Simulator
The main goal of the Command and Data Test-bed is to verify commands are scripted correctly to be accepted by the instrument and echoed back properly in telemetry.
If possible, EM DPU will be used instead of DPU simulator. This would interconnect the two test beds segments shown here.
If a FSW patch is needed, it will be tested in a software test-bed first and then in the Command and Data Test-bed.
1553 sniffer
1553
Cmds/
HKTs
1pps
High-rate data downlink sync and storage
4Mbps
High-rate data
Cmds/timing
ICDS full BB
DPU interface
Simulator
Sci/telem
sADC
Command/TLM/High-rate data software tools
cmds
SCAT interface
Simulator
telem
Generic Reference clock and power supplies
Thermal/deployment telemetry Simulator
Radiometer Engineering Test-bed (at GSFC)
Radiometer RF EMs:
RBE
RFE
CND
ICDS
Simulator
BCE & PC
Cmds/timing
DPU
(EM)
Cmds/timing
HKT
Sci/telem
science

85. Test Bed Limitations
Ideal test bed perfectly replicates Observatory and space environment
Limitations
No vacuum, no radiation, no orbital variations, no seasonal variations simulated
Only Radiometer offers some thermally controlled elements
Aquarius and Observatory testbeds are not interconnected
Aquarius provides no antenna, feed, or structure elements
Scatterometer breadboard is not included
Going in plan does not integrate Radiometer and ICDS elements
Radiometer is single (vs. triple) string and DPU is EM, not FM version
Radiometer FM hardware updates not applied to EM
Aquarius Power Distribution Unit is entirely replaced by power supplies
No temperature sensors or support software included in the Automatic Thermal Control portion of the test bed

86. Test Bed Capabilities Capabilities ICDS test bed provides
Full Scatterometer processing
Scatterometer simulator for RF elements is included
Full flight-like command and telemetry response, although with nearly all simulated inputs and feedback
Radiometer test bed provides
Limited RF targets may be available
DPU software updates to match FM may be possible; to be investigated
Investigating the integration of the ICDS and Radiometer test bed elements
If Radiometer EM integration is successful
inputs and feedback will be very flight-like, within stated limitations

87. ACCS Test Plan

88. ACCS Test Plan Purpose: Test approach
Verify the Aquarius Ground System Level 3 Requirements
Describe the plan for integrating and testing Aquarius Ground System segments
Describe the plan for integrating and testing the Aquarius Ground System with the SACD Ground System
Describe the training plan for Aquarius Ground System operators.
Test approach
Ensure that AQ GS test objectives are met in a twofold fashion.
Perform standard component and system level tests that verify Level 3 requirements. (Verification)
Simulate full operations on a daily basis for at least one year prior to launch. (Validation) This extensive testing will support:
Stressing the system
rehearsing anomaly detection and response
iterative optimization of science data processing algorithms.

89. Test Process
Analyze Level 3 requirements that will be verified and then map them into test categories.
Develop the Test Cases including test procedures.
Conduct peer review of Test Cases and Test Procedures.
Prepare for tests:
Verify that the pertinent subsystem tests have been completed successfully
Verify that the appropriate test data is prepared. Generate if necessary.
Coordinate and execute testing for each major AQ GS component including relevant regression testing.
Test execution takes place on the day of the test and includes:
Verification of participants, locations, test preparations, etc.
Startup procedures
Execution of the Test (step-by-step)
Close-down procedures
Debriefing: review and document test results and anomalies

90. Full Ground System Test List
Segment Tests:
ACCS Acceptance Test
ADPP Acceptance Test
ACCS-ADPS Interface Test
ADPP-ADPS Interface Test
ADPS Level 0 to 1A Processing Test
ADPS Level 1 Algorithm Test
ADPS Level 2 Algorithm Test
ADPS Level 3 Algorithm Test
ADPS Retrieval, Scheduling and Archiving Test
SACD SOC-ADPP-ADPS File Exchange Tests
ACCS Command and telemetry verification (against test-bed)
ACCS Script verification (against test-bed)
Ocean Biology Processing Web Based Telemetry Tools Test
PO.DAAC interface test
ADPS – AVDS interface test
System Tests:
SACD MOC-ADPP-ADPS-ACCS End to End Test
Mission Scenarios/Operational Readiness Test with CONAE
Mission End to End Test
Tests involving the ACCS

91. Ground System End to End Test Setup
SACD MOC-ADPP-ADPS-ACCS End to End Test configuration is identical to flight
This configuration will be presented in detail later in this slide set

92. Operational Readiness Test System Configuration
Replaces the Observatory with the Observatory Test Bed
Observatory Test Bed is housed at the CONAE ground station
Test Bed is controlled and monitored locally vs via the Flight Control system
Command and Data files must be manually transferred to and from Aquarius Ground System
This is adequate for Aquarius Ground System purposes in that we have no real-time control of Aquarius

93. Mission End to End Test Setup

94. ACCS Training Plan
Aquarius Science, Instrument and Ground System Overview
In-house document that describes the mission elements from an operations perspective
ACCS User's Guide
Generally an assembly of CONAE deliverables
Supplemented by in-house training information
Aquarius Operations Handbook
Policies, Processes and Procedures
Mission Scenarios
Participation for operators already on board
Documented results for operators hired afterward
Aquarius Test-Bed
Training scenarios
Certification

95. ACCS Schedule

96. ACCS Risks

97. ACCS Risks Impacts of CONAE MOC redesign
AQ GS – SAC-D GS testing delayed until Feb ’09
Any needed redesign and retest likewise delayed
Mitigation: Fall back to SAC-C design
Effectiveness of the Aquarius Test Bed for Analyzing and Resolving Anomalies
Lack of total interconnectivity of elements (including Observatory test bed)
Limited ability to simulate thermal environment and sensing for a very thermally sensitive instrument
Mitigation: Risk is being accepted by the project

98. Acronym List

99. Acronym List, A - E ACCS Aquarius Command and Control System
ADC Analog to Digital Converter
ADPP Aquarius Data Pre-Processor
ADPS Aquarius Data Processing System
AOCS Attitude and Orbit Control System (Observatory)
APDU Aquarius Power Distribution Unit
AQ Aquarius
AQ GS Aquarius Ground System
AR Action Request
ASI Agenzia Spaziale Italiana
ATC Automatic Thermal Control
BB Breadboard
BCE Board Control Electronics
CCSDS Consultative Committee for Space Data Systems
CM Configuration Management
CGSS CONAE Ground System Services
CND Correlated Noise Diode
CODS CONAE Orbit Determination System
CONAE Comision National de Actividades Espaciales
CPU Central Processing Unit
CUGSS CONAE User Ground System Services
CUSS CONAE User Segment Services
DeltaV Delta Velocity – an in-track orbit adjustment maneuver
d/l downlink, download
DPU Digital Processing Unit (Radiometer)
EM Engineering Model
ETC Estacion Tierra Cordoba (CONAE Ground Station in Cordoba, Argentina)

100. Acronym List, F - N FC Flight Control (CONAE)
FGSS Foreign Ground System Services (CONAE)
FM Flight Model
FSW Flight Software
FUSS Foreign User Segment Services (CONAE ground system acronym)
GHz Gigahertz
GPS Global Positioning System
GS GroundSystem
GSE Ground System Equipment
HKT Housekeeping Telemetry
HKTM Housekeeping Telemetry
ICDS Instrument Command and Data System
IT Information Technology
I&T Integration and Test
Kbps Kilobits per second
Km Kilometer
JPL Jet Propulsion Laboratory (Aquarius Project Management and instrument subsystem provider)
LVPS Low Voltage Power Supply
LUT Look Up Table (Radiometer)
MB Megabytes
Mbps Megabits per second
MOC Mission Operations Center (CONAE ground system acronym)
MOM Mission Operations Manager (a CONAE position)
NASA National Aeronautics and Space Agency
NGN NASA Ground Network

101. Acronym List, O - Z OMT Ortho Mode Transducer
ORT Operations Readiness Test
ORR Operations Readiness Review
OS Operating System
PC Personal Computer
PPS Pulse Per Second
PSU Practical Salinity Units
RAM Random Access Memory
RBE Radiometer Back End
RFE Radiometer Front End
RMS Root-Mean-Squared
RF Radio Frequency
RT Real time
SACD Satelite Argentina Cientifica – D
SBE Scatterometer Back End
SFE Scatterometer Front End
SFTP Secure File Transfer Protocol
SInter Spacecraft Interpreter
SOC Spacecraft Operations Control
SOCB Science Operations Control Board
SOP Spacecraft Operations Planning (system)
SP Service Platform (generic term for SAC-D)
ST Stored (data)
TC Telecommand
TCP/IP Transfer Control Protocol/Internet Protocol

102. Backup Slides

103. Engineering Test-beds
Radiometer Engineering Test-bed (at GSFC)
Radiometer RF EMs:
RBE
RFE
CND
ICDS
Simulator
BCE & PC
Cmds/timing
DPU
(EM)
Cmds/timing
HKT
Sci/telem
science
Engineering test-beds stay with the cognizant engineers (at GSFC and at JPL) to investigate functional/performance issues.
Scatterometer Engineering Test-bed (at JPL)
LVPS EGSE (DCCP)
Scat RF BBs: SBE, SCG, SFE, LVPS, RF-deck, Diplexer, coupler
APDU slice 4 EM
ICDS simulator or ICDS-BB2
Antenna Test-bed (at JPL)
Standard test/measurement equipment
EM feed/OMT
Flight Software Test-bed (at JPL)
RAD6K BB
ATC engineering Test-bed (at JPL)
APDU Engineering Test-bed (at JPL)
ATC Heater modules BB
APDU
Slice 2 EM
APDU slice2 BCE
APDU slice 1 EM
ATC controller BB
Thermal Modeling Test-bed (ASL/JPL)
APDU
Slice 3 EM
APDU slice3 BCE
Aquarius thermal models for analysis and simulations
ATC BCE and Labview
APDU
Slice 5 EM
APDU slice5 BCE