New Flight Dynamics System FDS in NASDA

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New Flight Dynamics System (?FDS) in NASDA
1721 May.2004 Montreal, Canada
Yoshitaka TAROMARU (JAXA former NASDA) Takashi
Uchimura, Mikio Sawabe, Toshitaka Sasaki Mina
Ogawa, Seiji Katagiri (JAXA) Shiro Ishibasi,
Masaya Kameyama, Kenji Shinozaki (Fujitsu.Ltd)
Montreal, Canada Space Ops 2004
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New Flight Dynamics System (?FDS) in JAXA
Contents of this presentation ?
Introduction ? Outline of existing FDS and
experimental systems ? Overview of FDS
? Overview of GUTS ?
Overview of SDSS ? Evaluation results
of existing FDS inconvenience ? Fundamental
concept of new FDS (?FDS) ? ?FDS system
configuration and function ? Characteristic
system technologies in ?FDS ? Schedule and
conclusion
Overview of existing FDS
Montreal, Canada Space Ops 2004
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New Flight Dynamics System (?FDS) in JAXA
1. Introduction JAXA has started
preliminary design of next generation flight
dynamics system which is called New FDS (?FDS)
considering background and situations is as
following ? the existing Flight Dynamics
System too become old concerning existing
application software, computing hardware,
effective total operation and so on. ? we had
deployed and established some operational and
experimental systems suitable for each mission
based on satellite user requirement.

Montreal, Canada Space Ops 2004
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New Flight Dynamics System (?FDS) in JAXA
1996
NOCS2 (NASDA orbit computation system)
2000
UNOCS (Unified NASDA orbit computation system)
1994
SNOCS (NASDA orbit computation system for space
network)
Maneuver planning and attitude Determination
system
2007
?FDS
Operational system
2000
High accuracy
GUTS (Global and high accuracy trajectory
determination system)
Experimental systems
1999
2003
Space debris
DOANATS (Debris orbit analysis Test system)
SDSS (Space debris surveillance system)
Detail of JAXA fight dynamics system
Montreal, Canada Space Ops 2004
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New Flight Dynamics System (?FDS) in JAXA
2. Outline of existing FDS
FDS
Data trans receive
Observation data processing
Orbit Estimation/ generation
Data trans receive
Maneuver planning/Orbital information generation
Satellite control system
Tracking data
Prediction data

DB
data
Experiment system
JAXA ground and space network
GUTS
International organization
SLR/GPS data
External interface
Orbit estimation Orbital information generation
ODDS (orbit data distributing System)
Public user
GUTS observation system
Operation plan
Monitoring and planning
SLR/GPS data

DB
data
Prediction data
SLR/GPS
Satellite Control system
Onboard GPS data
Debris observation system
SDSS
Data trans receive
Orbit estimation
Observation data
Optical telescope
Visibility
Identification
Prediction data
Observation planning
Orbit prediction
Radar system
Another organization sites
TLE
Debris analysis
DB
NASA open server
JAXA existing flight dynamics system
Montreal, Canada Space Ops 2004
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New Flight Dynamics System (?FDS) in JAXA

• Overview of FDS (Flight Dynamics System)
• ? Fundamental orbit determination(OD) and
  maneuver
• planning (MP) system for satellite orbit
  operation.
• ? FDS handle 1,2 and 4 way radiometric
  (obtain GN,SN)
• data for OD.
• ? MP can be make orbit maneuver plan for GEO,
  near earth
• orbiting.
• ? As other functions, real-time orbit
  estimation, orbit
• determination for lunar and
  inter-planetary explorers.

FDS
Data trans receive
Observation data processing
Orbit Estimation/ generation
Data trans receive
Maneuver planning/Orbital information generation
Satellite control system
Tracking data
Prediction data

DB
data
Experiment system
JAXA ground and space network
Montreal, Canada Space Ops 2004
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New Flight Dynamics System (?FDS) in JAXA
(2) Overview of GUTS (Global and high accUracy
Trajectory determination System)
? GUTS was developed for more precise orbit
determination. ? GUTS handles Satellite
Laser Ranging (SLR) data and GPS data.
?JAXA established SLR station and GPS
receiver.
GUTS
International organization
SLR,IGS data
External interface
Orbit estimation Orbital information generation
GUTS observation system
Monitoring and planning
Operation plan
SLR/GPS data

DB
data
SLR/GPS
Prediction data
Satellite Control system
Onboard GPS data
Montreal, Canada Space Ops 2004
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New Flight Dynamics System (?FDS) in JAXA
(3) Overview of SDSS (Space Debris Surveillance
System) ? SDSS handles angle and
range data obtain by optical telescope
and radar system for space debris observation.
? SDSS analysis function consist of re-entry
prediction and collision prediction as
experimental item.
Debris observation system (another organization
sites)
SDSS
Data trans receive
Orbit estimation
Optical telescope
Observation data
Visibility
Identification
Prediction data
Observation planning
Orbit prediction
Radar system
DB
TLE
Debris analysis
NASA open server
Montreal, Canada Space Ops 2004
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New Flight Dynamics System (?FDS) in JAXA
(4) Evaluation result of existing FDS
inconvenience
? FDS, GUTS and SDSS system were developed
independent system, and the disposition
of each system is suitable for
respective mission. ? Existing FDS is inviting
inconvenience in order to ? lack of
uniformity of database, data interface, basic
subroutines and operational GUI, MMI for
independent system. ? lack of
coexistence of operational and analysis
environment. ? respective operation sequence
and scheduler function in each system.
?FDS fundamentally baseline
Montreal, Canada Space Ops 2004
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New Flight Dynamics System (?FDS) in JAXA
3. Fundamental concept of new FDS (?FDS) We
have established 4 fundamentally baseline for
?FDS in order to solve the existing FDS
inconvenience. ? Unification of orbit data
management (each observation data,
dynamical model and so on), operational
environment (GUI and MMI) with
computing hardware in each system. ? High
performance research development environment
with adopting of latest software
technique. ? Autonomous control of flight
dynamics operation. ? Reduction of total
life cycle cost.

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New Flight Dynamics System (?FDS) in JAXA
4. ?FDS system configuration and function ?FDS
consists of 14 subsystems, and these subsystem
can be divided into 3 functional group.

Montreal, Canada Space Ops 2004
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New Flight Dynamics System (?FDS) in JAXA
(1) Management function group This functions
group plays management roles concerning allover
systems. ? This group consists of 4
subsystems.
Unified system monitoring subsystem
External interface subsystem
Tracking data
External interface subsystem
Data preprocessing subsystem
Orbit estimation subsystem
Orbit generation subsystem
Prediction data
JAXA ground and space network
Operation planning subsystem
Mission analysis subsystem
External, Internal users
Maneuver planning subsystem
Operation support subsystem
SLR/GPS data
Prediction data
Task assistance subsystem
GUTS observation system
Operation management subsystem
Data management subsystem
Information distribution subsystem
Unified database
Common data
Observation data
Public user
Prediction data
observation data orbital element orbital
ephemeris
dynamical model observation model
System management subsystem
Debris observation system (another organization
site)
Montreal, Canada Space Ops 2004
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New Flight Dynamics System (?FDS) in JAXA
(2) Processing function group This
function group consists of many flight dynamics
or data processing functions. ? This group
consist of 8 subsystems.
Unified system monitoring subsystem
External interface subsystem
Tracking data
External interface subsystem
Data preprocessing subsystem
Orbit estimation subsystem
Orbit generation subsystem
Prediction data
JAXA ground and space network
Operation planning subsystem
Mission analysis subsystem
External, Internal users
Maneuver planning subsystem
Operation support subsystem
SLR/GPS data
Prediction data
Task assistance subsystem
GUTS observation system
Operation management subsystem
Data management subsystem
Information distribution subsystem
Unified database
Common data
Observation data
Public user
Prediction data
observation data orbital element orbital
ephemeris
dynamical model observation model
Debris observation system (another organization
site)
System management subsystem
Montreal, Canada Space Ops 2004
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New Flight Dynamics System (?FDS) in JAXA
(3) Interface functions group This function
group manages to realize the smooth interface
between ?FDS and external systems. ?
This group consist of 2 subsystems.
Unified system monitoring subsystem
External interface subsystem
Tracking data
External interface subsystem
Data preprocessing subsystem
Orbit estimation subsystem
Orbit generation subsystem
Prediction data
JAXA ground and space network
Operation planning subsystem
Mission analysis subsystem
External, Internal users
Maneuver planning subsystem
Operation support subsystem
SLR/GPS data
Prediction data
Task assistance subsystem
GUTS observation system
Operation management subsystem
Data management subsystem
Information distribution subsystem
Unified database
Common data
Observation data
Public user
Prediction data
observation data orbital element orbital
ephemeris
dynamical model observation model
Debris observation system (another organization
site)
System management subsystem
Montreal, Canada Space Ops 2004
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New Flight Dynamics System (?FDS) in JAXA
5. Characteristics system technologies in ?FDS
(1) Software structure for unification
Unified Data Storage
orbital elements observational data
DBMS XML
Operational condition setting
Operational condition presentation
GUI
GUI
Api
Api
Api
Api
etc
etc
J2EE
Operation controller
Task Controller
Task Controller
Task Controller
Task Controller
Task Controller
Numerical Computing Processor
Numerical Computing Processor
Legacy Architecture (Fortran.etc)
Numerical Computing Library
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New Flight Dynamics System (?FDS) in JAXA
(2) Coexistence of operation and analysis
environment
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New Flight Dynamics System (?FDS) in JAXA
(3) Autonomous control of orbit estimation
(example)
Flow of orbit estimation autonomous process
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New Flight Dynamics System (?FDS) in JAXA
6. Schedule and conclusion
GOSATgreen house gas observing satellite
Montreal, Canada Space Ops 2004