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CINEMA Operations Manfred Bester

CINEMA Operations Manfred Bester. Outline. Outline CINEMA Concept of Operations Operations Heritage at UCB/SSL Communications Options Ground Systems Requirements Ongoing Work Student Involvement in Operations. CINEMA Concept of Operations. CINEMA Concept of Operations Mission Orbit

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CINEMA Operations Manfred Bester

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  1. CINEMA Operations Manfred Bester

  2. Outline • Outline • CINEMA Concept of Operations • Operations Heritage at UCB/SSL • Communications Options • Ground Systems Requirements • Ongoing Work • Student Involvement in Operations

  3. CINEMA Concept of Operations • CINEMA Concept of Operations • Mission Orbit • Spin-stabilized spacecraft • Baseline orbit 650 km circular at 72° inclination • Pass Coverage • Typically 4 passes/day with 30 min access time • Tracking via TLEs downloaded from USSTRATCOM • Data Recovery • Store-and-forward scheme, downlink at 1 Mbps • Recoverable science data volume 760 Mbits/day • Ground Segment • MOC and ground station located at UCB/SSL • Look into using heritage control system (ITOS)

  4. Operations History at UCB/SSL CHIPS 2003-2008 RHESSI Since 2002 FAST 1996-2009 Flight Operations History at UC Berkeley’s Space Sciences Laboratory THEMIS Since 2007 NuSTAR Launch 2011 EUVE 1992-2001

  5. Multi-mission Operations Center at UCB/SSL • CINEMA can leverage strong heritage of an existing multi-mission MOC • Many internal MOC systems and interfaces required for CINEMA are functional already • High degree of systems automation is employed for reliable lights-out operations • New interfaces required for CINEMA depending upon telecommunications trades • All operational interfaces are carefully exercised during pre-launch testing Flight control consoles at the multi-mission MOC

  6. Original CINEMA Ground Track

  7. Communications Options • Communications Options • Telecom Trades • Frequency band selection • Flight transceivers • Flight antennas • Flight software • Ground hardware & software • Ground Stations • BGS 11m • Others • Link Budgets • NASA style S-band links and WiFi S-band links • Spectrum Licensing • Government, commercial or amateur radio

  8. Telemetry & Command Data Formats • Telemetry & Command Data Formats • CCSDS Standard • Packet layer • Transfer frame layer • Coding layer with Reed Solomon error correction • UCB has in-house heritage • Various tools in place to process data • AX.25 Standard • Useful for low rate house keeping and command data transfer • May be alternative for UHF/VHF links • Can be implemented at the MOC

  9. S-band Communications Concept CINEMA Science TLM S-band 2200-2300 MHz Engineering TLM/CMD S-band 2400-2450 MHz BGS 11m Antenna MOC at UCB/SSL

  10. Multi-band Communications Concept CINEMA Science TLM S-band 2200-2300 MHz Engineering TLM/CMD UHF/VHF 440/145 MHz BGS 11m Antenna MOC at UCB/SSL

  11. NASA Style S-Band Link • NASA Style S-Band Link • Transceiver options: SpaceQuest, Emhiser • Heritage: CHIPSAT, various others • Spectrum licensing: Need government license • Trades: Can use BGS “as is” • High link margin • Low risk SpaceQuest TX-2400 Transmitter

  12. WiFi S-Band Link • WiFi S-Band Link • Transceiver options: MicroHard • Heritage: GENESAT • Spectrum licensing: Need amateur radio license • Trades: Reuse existing flight hardware • and software • Unknown impact of local WiFi • interference MicroHard MHX-2400 Transceiver

  13. S-Band Prototype Antennas • First Prototype Model • Linear polarized patch antenna • Overall Dimensions 70.2 x 70.2 mm2 • Fabricated first antenna prototype at SSL • Need to optimize design further • Goal is circular polarized antenna • Test with BGS 11-m antenna in far field

  14. Commercial S-Band Antennas • Spectrum Control • Provides patch antenna elements • Various frequency bands (900 MHz – 5.8 GHz) • Circular polarization

  15. S-Band Flight Antennas • Flight Models • Circular polarized patches: • Need 4 • Typical gain pattern: • Hemispherical with taper • Performance goals • See table below

  16. Ground Systems Requirements • Ground Systems Requirements • Mission Operations • Ground control system • Mission planning products • Sequence table generation • State-of-health monitoring • Spacecraft command and control • Ground station interfaces • Science Data Processing • Download of science data • Reformatting and archiving • Data distribution to science teams • Web based interfaces

  17. Ongoing Work • Ongoing Work • Communications Design • Trades for selection of radios ongoing • S-band antenna prototyping ongoing • Need to address spectrum licensing • Ground Systems • Ground station options tied to selection of radios • Command & control systems • Look into CCSDS compatibility • Develop Detailed Operations Concept • Operations scenarios • Attitude control • Day-in-the-life planning

  18. On-orbit Operations • On-orbit Operations • Make use of rich heritage and many years of experience • Take into account lessons learned • Adapt and simplify procedures from larger missions where appropriate • Perform detailed mission readiness testing to demonstrate all ground systems elements and interfaces are ready • Perform simulations for launch countdown and first/second day on orbit • Train students to successfully operate CINEMA under the guidance of professional flight controllers • Prepare students to work on larger and more complex missions in their future careers

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