Students’ Space Association        Warsaw University of TechnologySatellite operation on ESEO’s (European Students        ...
Plan of the presentation:ESEO Satellite (overview)Mission Objectives and specificationMain space segment characteristic...
ESEO SatelliteOne of ESA’s ‘’Hands-On’’ Educational projects.About 20 teams from all over the Europe4 Polish teamsESEO...
Mission Objectives and specification:Mission technological objectives:Test of Micro Camera Device (uCAM)Test of Reaction...
Main space segment characteristics:Time-tagged commandsSchedule for up to 5 days in advanceESEO SW (software), three di...
Ground segment main tasks:The ESEO Ground Segment will perform the following main tasks:   monitor and control the ESEO s...
Operation planning process (part1): Nominally plan updates – every day During weekends and holidays reduced up to one ti...
Operation planning process (part2):-   System timeline:Collecting users RequestsChecking requests for consistency with r...
Operation planning process (part3):-   System timeline (continued):The frozen operation plan is converted by the MissionC...
High Priority Commands & Emergency  Operations:List of the HPC foreseen for ESEO satellite is:Switch to OBDH (On Board Da...
Thank you for your attention!                  Artur ŁukasikFinancial Officer of Students’ Space Association              ...
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Satellite operation on eseo’s (european students earth orbiter) oper team example.

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Satellite operation on eseo’s (european students earth orbiter) oper team example.

  1. 1. Students’ Space Association Warsaw University of TechnologySatellite operation on ESEO’s (European Students Earth Orbiter) OPER team example. Artur Łukasik
  2. 2. Plan of the presentation:ESEO Satellite (overview)Mission Objectives and specificationMain space segment characteristicsGround segment main tasksOperations planning softwareHigh Priority Commands andEmergency Operations
  3. 3. ESEO SatelliteOne of ESA’s ‘’Hands-On’’ Educational projects.About 20 teams from all over the Europe4 Polish teamsESEO satellite has the followingmission objectives To take pictures of Earth from the orbit for educational outreach purposes To provide measurements of the plasma and radiation environment in Earth orbit and space plasma measurement in Earth orbit To test new technologies for future education satellite missions Exploitation by radio-amateur community after the end of operative phase
  4. 4. Mission Objectives and specification:Mission technological objectives:Test of Micro Camera Device (uCAM)Test of Reaction WheelTest of Star TrackerMission main scientific objectives:TriTel-S three-dimensional DosimeterLangumir plasma diagnostic probeThe LET (Linear energy transfer) spectra of the cosmicradiation, the absorbed dose and dose equivalentThe electron density and electron temperature
  5. 5. Main space segment characteristics:Time-tagged commandsSchedule for up to 5 days in advanceESEO SW (software), three different on board schedulers areforeseen. In detail they are: Satellite TC scheduler: dedicated to general purpose planned operations Payloads TC scheduler: dedicated to payloads operations (e.g. acquisition, calibration, configuration) and telecommands for ACS (Attitude Control System) target pointing manoeuvres. Contact Table schedulerThe schedulers can be managed by telecommands from theground segment. The following operations are allowed: Commands can be added in the scheduler. The scheduler can be suspended (disabled) and resumed. All commands from a certain time stamp upwards can be removed A single command can be disabled
  6. 6. Ground segment main tasks:The ESEO Ground Segment will perform the following main tasks: monitor and control the ESEO satellite during all the phases of the mission, both in nominal and contingency conditions; receive users request and elaborate a Mission Planning accordingly; receive Payload data, process it and make it available to users; handle on board software maintenance, updating and patching; evaluate and predict spacecraft dynamic behavior; manage Satellite and Payload databases manage and coordinate the different Ground Stations.
  7. 7. Operation planning process (part1): Nominally plan updates – every day During weekends and holidays reduced up to one time per three days Ground segment team working 1 shift a day, five days a week. Two ground stations: GS North( in Europe) - satellite monitoring, data download and routine maintenance operations and GS South (in New Zealand) – uploading operation plan1. The baseline plan containing the routine operations for satellite monitoring, control and maintenance.2. Payload data aquisition requested by users.
  8. 8. Operation planning process (part2):- System timeline:Collecting users RequestsChecking requests for consistency with respect to theoverall system constraintsThe operation plan is then harmonized. A baselineOperation Plan is generated. And splited into two parts: The satellite operation plan The ground station operation plan (time of contacts, antenna pointing angles, etc.)The plan follow up is returned to the Users to providethem with feed-back information
  9. 9. Operation planning process (part3):- System timeline (continued):The frozen operation plan is converted by the MissionControl Centre, into the corresponding time taggedtelecommands listThe telecommand list is then uploaded to the satelliteby the TMTC (Telemetry-Telecommand) stationThe satellite executes the time tagged telecommands toget the payload data and store them onboardThe data remains stored on-board till it can bedownloaded according to memory management andsatellite contactsData are downloaded and received by the groundstation
  10. 10. High Priority Commands & Emergency Operations:List of the HPC foreseen for ESEO satellite is:Switch to OBDH (On Board Data Handling) Main sectionSwitch to OBDH Redundant sectionReset active OBDHWatchdog reset (Necessary to avoid automatic change of OBDH section)ON/OFF commands to S-Band transmitterReset TMTC (Telemetry-Telecommand unit)Emergency operations will define at least the following tasks:Identification of the problem.Use of simulation tools (simulators, satellite elements engineering model) fortesting the recovery procedures.Generation of the plans for dealing with the recovery actions.Execution of contingency procedures.Verification of the recovery.Restart of the routine operations.
  11. 11. Thank you for your attention! Artur ŁukasikFinancial Officer of Students’ Space Association gobbo@tlen.pl +48 504 998 074

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