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FSW & Operations Winter Summary

FSW & Operations Winter Summary. Seyoung Yoon KHU EE Team. Agenda. Operations Operation Scenario Contact Sequence Power Status Mission Operation Center Flight Software Execute Module Command Module Sun-sensor Module SPI-to-UART converter using another dsPIC. Operation Mode.

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FSW & Operations Winter Summary

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  1. FSW & OperationsWinter Summary Seyoung Yoon KHU EE Team

  2. Agenda • Operations • Operation Scenario • Contact Sequence • Power Status • Mission Operation Center • Flight Software • Execute Module • Command Module • Sun-sensor Module • SPI-to-UART converter using another dsPIC

  3. Operation Mode • Safe mode • All instruments are not available. • Science mode • All instruments are availableexcept boom and antenna actuators and torque coils. • ACS mode • STEIN instruments are not available and MAGIC operation mode is switched to ACS mode. • Torque coils are available. • Engineering mode • All instruments are available. • OBC, EPS, BATT, RX and Sun-sensors are always turned on.

  4. Operation Scenario • Launch • Launched and separated from the launch vehicle • Startup • Power-on, initializes the FSW, deploys the UHF antenna, waits for contact the ground station • Stabilization • Contacts the ground station, deploys the boom, calibrates the MAGIC, ACS acquisition mode, ACS procession mode • Science Operation • Download mode, Observation mode, ACS mode, Safe mode, Fault recovery • Mission Termination

  5. Operation Scenario 1.0 Launch Process 2.0 Startup Process 3.0 Stabilization Process

  6. Operation Scenario 4.0 Science Operations

  7. Contact Sequence Flow Sequence of contact with the Ground Station

  8. Power Status(1/2)

  9. Power Status(2/2)

  10. Mission Operation Center We need more function or system to operate the mission automatically. CINEMA Integrated Ground Support Software (IGSS) CINEMA Emulator Attitude Simulator (Matlab/simulink) Radio Radio System GSEOS Mission Planning System Orbit Simulator (STK or Orbitron or hand-made?) Satellite Tracker (Orbitron?) Not determined In progress

  11. Mission Operation Center • Radio communication system • UHF/S-band antennae, transceivers, TNCs, RS decoder(TBD) • Satellite Tracking System • Tracking software for antenna control (Orbitron in KHU), antenna rotator and controller. • GSEOS - Communication software for command and telemetry • Mission Planning System • Pass scheduling from the Orbitron or STK or hand-made • Observation planning • Generating the command for the spacecraft • Simulator for attitude control (Matlab/Simulink) • It conducts the simulation for attitude control. • For verification, it executes the command with the CINEMA emulator. • CINEMA emulator • It consists of the development board for OBC and simulator or EM for other instruments. • Integrated Ground Support Software • It shall conduct interfacing between other ground software.

  12. Flight Software • EXEC Module • Initialize the functions of each FSW modules • Execute the command(now only immediately command) from CMD module • Organized the structure of function • CMD Module (Sameet’s) • Added some code to parse the CDI packet from the Helium radio

  13. Flight Software • Sun-sensor Module • Modified for new sun-sensor circuit • Sun-sensor data is updated when the HSK task is called and when the ACS asks it. • Return the sun-vectors(x, y, z) and spin rate(rad/sec) • Have two problem that Earth’s Albedo and detecting the spin direction • Direction problem can be solved by getting the direction from the ACS • SPI-to-UART Converter using another dsPIC • It’s available to check the data from dsPIC or IIB • Current model has fixed clock and data length • Should be updated to get more convenient interface

  14. Future Works • Integrate the FSW • Add the commands from the CTM.xls • Add the functions for early orbit • Sun-sensor • Find the solution for two problems • Test with real hardware • SPI-to-UART converter • Update to control the option such as clock speed and number of received bytes.

  15. Thank you Kyung Hee University / School of Space Research

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