CINEMA Operations Manfred Bester TRIO-CINEMA Meeting at KHU 1 October 19 -23, 2009
Outline • Outline − − − CINEMA Concept of Operations Heritage at UCB/SSL Communications Options Ground Systems Requirements Ongoing Work Student Involvement in Operations TRIO-CINEMA Meeting at KHU 2 October 19 -23, 2009
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) TRIO-CINEMA Meeting at KHU 3 October 19 -23, 2009
Operations History at UCB/SSL CHIPS 2003 -2008 FAST 1996 -2009 RHESSI Since 2002 Flight Operations History at UC Berkeley’s Space Sciences Laboratory THEMIS Since 2007 Nu. STAR Launch 2011 EUVE 1992 -2001 TRIO-CINEMA Meeting at KHU 4 October 19 -23, 2009 4
Multi-mission Operations Center at UCB/SSL Flight control consoles at the multi-mission MOC TRIO-CINEMA Meeting at KHU 5 § CINEMA can leverage strong heritage of an existing multimission 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 October 19 -23, 2009 5
Original CINEMA Ground Track TRIO-CINEMA Meeting at KHU 6 October 19 -23, 2009
Communications Options • Communications Options − Telecom Trades − − − Frequency band selection Flight transceivers Flight antennas Flight software Ground hardware & software − Ground Stations − BGS 11 m − Others − Link Budgets − NASA style S-band links and Wi. Fi S-band links − Spectrum Licensing − Government, commercial or amateur radio TRIO-CINEMA Meeting at KHU 7 October 19 -23, 2009
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 TRIO-CINEMA Meeting at KHU 8 October 19 -23, 2009
S-band Communications Concept CINEMA Science TLM S-band 2200 -2300 MHz Engineering TLM/CMD S-band 2400 -2450 MHz BGS 11 m Antenna MOC at UCB/SSL TRIO-CINEMA Meeting at KHU 9 October 19 -23, 2009
Multi-band Communications Concept CINEMA Science TLM S-band 2200 -2300 MHz Engineering TLM/CMD UHF/VHF 440/145 MHz BGS 11 m Antenna MOC at UCB/SSL TRIO-CINEMA Meeting at KHU 10 October 19 -23, 2009
NASA Style S-Band Link • NASA Style S-Band Link − Transceiver options: Space. Quest, Emhiser − Heritage: CHIPSAT, various others − Spectrum licensing: Need government license − Trades: Can use BGS “as is” High link margin Low risk Space. Quest TX-2400 Transmitter TRIO-CINEMA Meeting at KHU 11 October 19 -23, 2009
Wi. Fi S-Band Link • Wi. Fi S-Band Link − Transceiver options: Micro. Hard − Heritage: GENESAT − Spectrum licensing: Need amateur radio license − Trades: Reuse existing flight hardware and software Unknown impact of local Wi. Fi interference Micro. Hard MHX-2400 Transceiver TRIO-CINEMA Meeting at KHU 12 October 19 -23, 2009
S-Band Prototype Antennas • First Prototype Model − Linear polarized patch antenna Overall Dimensions 70. 2 x 70. 2 mm 2 − 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 TRIO-CINEMA Meeting at KHU 13 October 19 -23, 2009
Commercial S-Band Antennas • Spectrum Control − Provides patch antenna elements − Various frequency bands (900 MHz – 5. 8 GHz) − Circular polarization TRIO-CINEMA Meeting at KHU 14 October 19 -23, 2009
S-Band Flight Antennas • Flight Models − Circular polarized patches: Need 4 − Typical gain pattern: Hemispherical with taper − Performance goals See table below Patch Antenna Performance Goals Parameter Efficiency Gain Axial Ratio TRIO-CINEMA Meeting at KHU θ = 90° θ = 30° θ = 5° > 80% > 7 d. Bic > 0 d. Bic > -10 d. Bic < 1 d. B < 6 d. B < 10 d. B 15 October 19 -23, 2009
Ground Systems Requirements • Ground Systems Requirements − Mission Operations − Ground control system − Mission planning products − Sequence table generation − State-of-health monitoring − Spacecraft command control − Ground station interfaces − Science Data Processing − Download of science data − Reformatting and archiving − Data distribution to science teams − Web based interfaces TRIO-CINEMA Meeting at KHU 16 October 19 -23, 2009
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 TRIO-CINEMA Meeting at KHU 17 October 19 -23, 2009
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 TRIO-CINEMA Meeting at KHU 18 October 19 -23, 2009
Скачать презентацию CINEMA Operations Manfred Bester TRIO-CINEMA Meeting at KHU
463fd3d0cf8462b4bc7a8d8a191b1ea7.ppt