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In-Orbit Commissioning Phase: High Level Planning

In-Orbit Commissioning Phase: High Level Planning. Changes from last issue. - Plan takes into account that 2 Nov 2009 is Monday Christmas holidays (from 24-Dec-09 till 2-Jan-10) have been included Weeks 24 and 25 have been removed accordingly

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In-Orbit Commissioning Phase: High Level Planning

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  1. In-Orbit Commissioning Phase:High Level Planning

  2. Changes from last issue • - Plan takes into account that 2 Nov 2009 is Monday • Christmas holidays (from 24-Dec-09 till 2-Jan-10) have been included • Weeks 24 and 25 have been removed accordingly • Order of external calibration manoeuvres in Week 2 as proposed by CNES • LO high rate (2 min) calibration only in Week 4 (lower rate later) • Additional Dual vs Full-pol mode sky view in Week 7 • FTR Acquisition Criteria have been added • Timelines for S-band and SADM effects have been added • Slide number has been added • Navigation buttons added to go from overall plan to weekly plan and back

  3. Acronyms IOCP In-Orbit Commissioning Phase LEOP Launch and Early Orbit Phase SODAP Switch-On and Data Acquisition Phase

  4. IOCP Main Phases • The In-Orbit Commissioning Phase comprises 4 main phases: • Launch and Early Orbit Phase (LEOP) • Switch-On and Data Acquisition Phase (SODAP) • MIRAS Payload Commissioning • Pseudo-Operational Phase alternating dual and full-pol modes

  5. IOCP Key Points • Four Key Points are proposed: • - KP0: Decision point to start the MIRAS Payload Commissioning • KP1: Decision point to start the Pseudo-Operational Phase • KP2: Decision point to define final calibration strategy • Evaluation of L1 & L2 data product quality, and release to SVRT • KP3: Decision point to freeze calibration and operational mode

  6. 3 1 0 2 IOCP Main Phases LAUNCH CW 45 CW 46 CW 47 LEOP CW48 CW49 CW50 CW51 KP0 SODAP CW53 CW52 CW01 CW02 PAYLOAD XMAS (24-Dec till 2-Jan) CW03 CW04 CW05 CW06 6 months (27 weeks) Dual-Full KP1 CW07 CW08 CW09 CW10 Key Point CW11 CW12 CW13 CW14 PLM Switch ON KP2 CW15 CW16 CW17 CW18 KP3 1 week

  7. 3 1 0 2 IOCP Main Phases LAUNCH LEOP 1 2 3 4 KP0 SODAP 5X 5 6 7 PAYLOAD XMAS (24-Dec till 2-Jan) 8 9 10 11 6 months (27 weeks) Dual-Full KP1 12 13 14 15 Key Point 16 17 18 19 PLM Switch ON KP2 20 21 22 23 KP3 1 week

  8. IOCP Time Line • The proposed IOCP time line features: • Inclusion of all activities described in the Commissioning Plan • Early generation of the first image (start of L1OP) • Cold sky views (preceded by long calibration) every Tuesday • Early start of pseudo-operational phase • Quite regular weekly pattern • Minimisation of instrument mode changes • Evaluation of L1 & L2 data product quality, and release to SVRT by KP2 • Key Points on Wednesdays

  9. 0 XMAS 1 2 3 IOCP Detailed Time-line LAUNCH LEOP SODAP 1 2 3 4 Cold Sky View 5X 5 6 7 Long Calibration First Image 8 9 10 11 Thermal Stability 6 months (27 weeks) 12 13 14 15 Electrical Stability 16 17 18 19 Default Mode 20 21 22 23 Full Pol Dual Pol Key Point 1 week

  10. Summary of Cold Sky Views FTR is valid FTR is not valid – need for DPGS “manual” orchestration

  11. Summary of Cold Sky Views FTR is valid FTR is not valid – need for DPGS “manual” orchestration

  12. 0 XMAS 1 2 3 Summary of Cold Sky Views LAUNCH Inertial < 1orbit FTR 1 2 3 4 Inertial < 1orbit Verifications 5 5X 6 7 8 9 10 11 6 months (27 weeks) Zenith 1.1 orbit NIR 12 13 14 15 16 17 18 19 Zenith Verifications 20 21 22 23 Key Point 1 week

  13. First Calibration Time Line

  14. First Calibration Time Line

  15. 0 XMAS 1 2 3 First Calibration Time-line LAUNCH L1PP L1PP start L1 L1OP start D Dual pol first calibration completed in Week 5 F Full pol first calibration completed in Week 6 DPGS L1+L2+BUFR L1+DPGS 1 2 3 4 L1PP 5 5X 6 7 D F 9 10 11 8 6 months (27 weeks) 12 13 14 15 16 17 18 19 21 22 23 20 1 week

  16. LEOP PLM Switch ON LAUNCH LEOP comprises the launch, orbit injection and platform commissioning. During LEOP the payload is OFF (except for a short partial switch-on just before antenna deployment). LEOP is expected to be less than 2.5 weeks long. LEOP is described in Section 4.1 of the Commissioning Plan. Payload is switched on in Day 14 of LEOP.

  17. 0 SODAP Week 1 Week 2 Week 3 SODAP comprises the RF Link Test, the ESAC MINI Test and the Svalbard MINI Test, each one 1 week long. During SODAP the payload is ON. SODAP comprises the first 3 weeks after LEOP. First two weeks include also some Platform Commissioning activities. SODAP is described in Sections 4.2 through 4.5 of the Commissioning Plan. Key Point 0: decision to start the MIRAS Payload Commissioning / first pointing correction estimation (geolocation estimate) / first L1-L2 collocation / DPGS working up to level L1 (dual) and L2 /

  18. 0 SODAP Activities Week 1 Week 2 Week 3 SODAP activities have been defined by the SODAP team. It is proposed to attempt a first long cal, external calibration to get the Flat Target Response (section 4.6.4) and first image acquisition (section 4.6.6), all in dual-pol, at Week 3, and if failed, at Week 4. A correlator test will precede those attempts (section 4.6.2). For the image acquisition dual-pol with LO calibration is needed. During SODAP L1PP shall concentrate on the identified areas (Madagascar, Mid-Pacific Ocean…).

  19. MON TUE WED THU FRI SAT SUN Week 1 LEOP Week 1 Week 2 Day 14 of LEOP: Payload Switch ON Plain Full Pol

  20. 0 MON TUE WED THU FRI SAT SUN Week 2 Week 1 Week 2 Week 3 Galactic Pole – Inertial 30’ Flip-over Zenithal 110’ Inertial 2’ Plain Full Pol Plain Full Pol

  21. 0 0 MON TUE WED THU FRI SAT SUN Week 3 Week 2 Week 3 Week 4 Galactic Pole – Inertial (FTR in Dual Pol and NIR) S-band check - Zenith S-band check - Zenith Key Point 0 Plain Full Pol (+ LO Cal ) Correlator Test First Image Opportunity Long Calibration

  22. XMAS 1 MIRAS Payload Commissioning 4 5 5X 6 7 9 8 The MIRAS Payload Commissioning phase comprises the characterisation, calibration, validation and verification of the instrument. This phase comprises the first 5.5 weeks after SODAP, plus 1 week holidays (Week 5X). This phase is described in Sections 4.6 and 4.7 of the Commissioning Plan.

  23. XMAS 0 Week 4 Week 3 Week 4 Week 5 • Week 4 is the start of the MIRAS Payload Commissioning • Activities: • - Correlator Test, if failed in previous attempt (section 4.6.2) • - Thermal stability: instrument in default mode (section 4.6.1) • Long Calibration orbit • External Calibration targeting the Galaxy in inertial pointing, to assess the absolute accuracy of MIRAS. • First image opportunity, if failed in previous attempt (section 4.6.6) • Electrical stability (section 4.6.3) including U-noise injection (section 4.6.24) • In-between activities, the instrument is in Default Mode (see next slide) • External Calibration to assess impact of SADM

  24. Default Mode Definition • Default Mode definition: • Dual-pol mode • LO calibration including U-noise (6 epochs): • Week 4 - every 2 minutes (100 epochs) • Week 5 and onwards – TBD minutes (based on Week 4 analysis) • Short cal (29 epochs): every 2.5 hours (7500 epochs) TBC • Long cal (4996 epochs): every 2 days (144000 epochs)

  25. XMAS 0 MON TUE WED THU FRI SAT SUN Week 4 Week 3 Week 4 Week 5 Galaxy – Inertial (absolute accuracy) SADM Default Mode Thermal Stability Electrical Stability Correlator Test First Image Opportunity Long Calibration

  26. XMAS Week 5 Week 4 Week 5 Week 5X • Activities: • - Electrical stability (section 4.6.3) including U-noise injection (section 4.6.24) • Long Calibration orbit • External Calibration to check RFI from X and S-band (section 4.6.13), and STR RFI, in parallel targeting the Moon in inertial pointing (section 4.7.4)

  27. XMAS MON TUE WED THU FRI SAT SUN Week 5 Week 4 Week 5 Week 5X Moon – Inertial (X, S, STR RFI) XMAS Electrical Stability Default Mode Long Calibration

  28. XMAS Week 5X Week 5 Week 5X Week 6 This week is part of the Xmas holidays. Activities: - Instrument in Default Mode

  29. XMAS MON TUE WED THU FRI SAT SUN Week 5X Week 5 Week 5X Week 6 XMAS Default Mode

  30. XMAS Week 6 Week 5X Week 6 Week 7 • Activities: • - All-LICEF test (section 4.6.22) • Long Calibration orbit • External Calibration with Galactic Pole, inertial pointing, Full-pol (section 4.6.7) • Early Full-pol mode (section 4.6.8) • Electrical stability check • NIR 3rd and 4th Stokes parameters verification

  31. MON TUE WED THU FRI SAT SUN Week 6 Week 5 Week 6 Week 7 Galactic Pole – Inertial (FTR in Full Pol and NIR) Default Mode N E Full Pol Mode L All-LICEF NIR Stokes Long Calibration

  32. 1 Week 7 Week 6 Week 7 Week 8 • Activities: • Early Full-pol mode (section 4.6.8) • Long Calibration orbit • External Calibration with Galactic Pole, inertial pointing, Dual vs Full-pol • Electrical stability check • Note: long calibration and external calibration are performed twice to better assess dual vs full-pol performances.

  33. 1 MON TUE WED THU FRI SAT SUN Week 7 Week 6 Week 7 Week 8 Galactic Pole – Inertial (Dual vs Full Pol) Galactic Pole – Inertial (Dual vs Full Pol) Full Pol Mode E Default Mode Default Mode Long Calibration Long Calibration

  34. 1 Week 8 Week 7 Week 8 Week 9 • Activities: • Long Calibration orbit • External Calibration with Galactic Pole, inertial pointing, to check NIR leakage (section 4.6.21) • Electrical stability check • Key Point 1 main issues: • a) calibration rate for LO and Short • b) start of pseudo-operational phase (alternating Dual and Full-pol) • c) preliminary assessment of LICEF PMS Cold Sky calibration • d) first geolocation correction matrix • e) first accuracy estimate of L1 and L2 (dual and full)

  35. 1 1 MON TUE WED THU FRI SAT SUN Week 8 Week 7 Week 8 Week 9 Galactic Pole – Inertial (NIR leakage) E Default Mode Default Mode Key Point 1 Long Calibration

  36. 1 Week 9 Week 8 Week 9 Week 10 • Activities: • NIR PMS Calibration (section 4.6.23) • Long Calibration orbit • External Calibration with Galactic Pole, inertial pointing, Dual-pol • Dual-pol mode with nominal rate of LO and Short calibration • Electrical stability check

  37. 1 N MON TUE WED THU FRI SAT SUN Week 9 Week 8 Week 9 Week 10 Galactic Pole – Inertial (FTR in Dual Pol and NIR) Default Mode E Dual Pol Mode NIR PMS Long Calibration

  38. Weeks 10, 14, 18, 22 • Activities: • Dual-pol mode with nominal rate of LO and Short calibration • Long Calibration orbit • External Calibration with Galactic Pole, inertial pointing, in Full-pol • Full-pol mode with nominal rate of LO and Short calibration

  39. MON TUE WED THU FRI SAT SUN Weeks 10, 14, 18, 22 Week 10 Galactic Pole – Inertial (FTR in Full Pol and NIR) Dual Pol Mode Full Pol Mode Long Calibration

  40. Weeks 11, 15, 19 • Activities: • Full-pol mode with nominal rate of LO and Short calibration • Long Calibration orbit • External Calibration, NIR 1.1 orbit, zenith pointing • Dual-pol mode with nominal rate of LO and Short calibration

  41. MON TUE WED THU FRI SAT SUN Weeks 11, 15, 19 Week 11 1 Full Orbit Zenith Pointing (NIR) Full Pol Mode Dual Pol Mode Long Calibration

  42. Weeks 12, 20 Activities: - Dual-pol mode with nominal rate of LO and Short calibration - Long Calibration orbit - External Calibration, NIR 1.1 orbit, zenith pointing - Full-pol mode with nominal rate of LO and Short calibration

  43. MON TUE WED THU FRI SAT SUN Weeks 12, 20 Week 12 1 Full Orbit Zenith Pointing (NIR) Dual Pol Mode Full Pol Mode Long Calibration

  44. Weeks 13, 17, 21 Activities: - Full-pol mode with nominal rate of LO and Short calibration - Long Calibration orbit - External Calibration with Galactic Pole, inertial pointing, Dual-pol - Dual-pol mode with nominal rate of LO and Short calibration

  45. MON TUE WED THU FRI SAT SUN Weeks 13, 17, 21 Week 13 Galactic Pole - Inertial (FTR in Dual Pol and NIR) Full Pol Mode Dual Pol Mode Long Calibration

  46. Week 16 Week 15 Week 16 Week 17 2 Activities: - Key Point 2 (week 16) main issues: a) confirmation of calibration rate for LO and Short (compatible with a 6 day full coverage for SM) b) preliminary assessment of Dual and Full-pol c) in-depth analysis of Dual and Full at levels L1 and L2 leading to the evaluation of L1 & L2 data product quality, and release to SVRT d) decision on LICEF PMS Cold Sky calibration (impacts L1OP)

  47. MON TUE WED THU FRI SAT SUN Week 16 Week 15 Week 16 Week 17 2 1 Full Orbit Zenith Pointing (NIR) Dual Pol Mode Full Pol Mode 2 Key Point 2 Long Calibration

  48. Week 23 Week 22 Week 23 Week 24 Operational 3 Activities: - Full-pol mode with nominal rate of LO and Short calibration - Long Calibration orbit - External Calibration targeting the Moon in zenith pointing, Dual-pol - Electrical stability (section 4.6.3) including U-noise injection (section 4.6.24) - Key Point 3 main issues: a) confirmation of calibration rate for Cold Sky and Long Calibration b) final assessment of Dual and Full-pol c) preparation for the decision to go into the operational phase

  49. MON TUE WED THU FRI SAT SUN Week 23 Week 22 Week 23 Week 24 Operational 3 Moon – Zenith Pointing Full Pol Mode Electrical Stability 3 Key Point 3 Long Calibration

  50. Criteria for FTR Acquisition Necessary Criteria: 1.- Minimum sky brightness temperature (ensures maximum contrast) 2.- Minimum sky rms brightness temperature (ensures maximum uniformity) 3.- Sun behind antenna plane or eclipsed by Earth (minimises Sun contamination) 4.- Antenna beam away from equatorial plane (minimises RFI from other satellites) Criteria which can be relaxed to some extent if not fulfilled: 5.- Moon behind antenna plane (minimises Moon effects) Criteria which are recommended but subject to investigation: 6.- FTR acquisition while over ocean (should reduce backlobe contamination)

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