Transcript Commissioning Phase – Instrument Modes

In-Orbit Commissioning Phase:
High Level Planning
IOCP High Level Plan, 8 September 2009
1
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
IOCP High Level Plan, 8 September 2009
2
Acronyms
IOCP
In-Orbit Commissioning Phase
LEOP
Launch and Early Orbit Phase
SODAP
Switch-On and Data Acquisition Phase
IOCP High Level Plan, 8 September 2009
3
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
IOCP High Level Plan, 8 September 2009
4
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
IOCP High Level Plan, 8 September 2009
5
IOCP Main Phases
LAUNCH
CW 45
CW 46
CW 47
LEOP
CW48
CW49
CW50
CW51
0 KP0
CW53
CW01
CW02
XMAS (24-Dec till 2-Jan)
CW03
CW04
CW05
CW06
CW07
CW11
CW08
CW12
CW09
CW13
CW10
CW14
2 KP2
CW15
CW16
CW17
(27 weeks)
1 KP1
 6 months
CW52
SODAP
PAYLOAD
Dual-Full
Key Point
PLM
Switch ON
CW18
3 KP3
1 week
IOCP High Level Plan, 8 September 2009
6
IOCP Main Phases
LAUNCH
LEOP
1
2
3
4
0 KP0
6
7
XMAS (24-Dec till 2-Jan)
8
9
10
11
12
16
13
17
14
18
15
19
2 KP2
20
21
22
(27 weeks)
1 KP1
 6 months
5X
5
SODAP
PAYLOAD
Dual-Full
Key Point
PLM
Switch ON
23
3 KP3
1 week
IOCP High Level Plan, 8 September 2009
7
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
IOCP High Level Plan, 8 September 2009
8
IOCP Detailed Time-line
LAUNCH
LEOP
1
2
3
SODAP
4
0
6
 6 months
5X
5
Cold Sky View
7
XMAS
8
9
10
11
1
13
16
14
17
18
(27 weeks)
12
15
19
First Image
Thermal
Stability
Electrical
Stability
Default Mode
2
20
Long Calibration
21
22
23
3
Key Point
IOCP High Level Plan, 8 September 2009
Full Pol
Dual Pol
1 week
9
Summary of Cold Sky Views
Week
2
3
4
Pointing
Duration
Target
Mode
Purpose
Inertial
2 min
Galactic Pole
Plain
Dual
Platform
commissioning
Inertial
30 min
Galactic Pole
Plain
Dual
Platform
commissioning
Zenith
1.1 orbit
One full sky circle
Plain
Dual
Platform
commissioning
Zenith
1.1 orbit
One full sky circle
Dual
S-band RFI
Inertial
Standard
Galactic Pole
Dual
FTR Dual + NIR
Zenith
1.1 orbit
One full sky circle
Dual
S-band RFI
Inertial
Standard
Galaxy at boresight
Dual
Accuracy
Inertial
Standard
Galactic Pole
Dual
SADM
FTR is valid
FTR is not valid – need for DPGS “manual” orchestration
IOCP High Level Plan, 8 September 2009
10
Summary of Cold Sky Views
Week
Pointing
Duration
Target
Mode
Purpose
5
Inertial
Standard
Moon in AF-FoV
Dual
X + S + STR RFI
6
Inertial
Standard
Galactic Pole
Full
FTR Full + NIR
7
Inertial
Standard
Galactic Pole
Dual
Dual vs Full
8
Inertial
Standard
Galactic Pole
Dual
NIR leakage
9
Inertial
Standard
Galactic Pole
Dual
FTR Dual + NIR
10-14-18-22
Inertial
Standard
Galactic Pole
Full
FTR Full + NIR
11-15-19
Zenith
1.1 orbit
One full sky circle
Dual
NIR
12-16-20
Zenith
1.1 orbit
One full sky circle
Dual
NIR
13-17-21
Inertial
Standard
Galactic Pole
Dual
FTR Dual + NIR
23
Zenith
1 half orbit
Moon traversing AF-FoV
Dual
E2E Verification
FTR is valid
FTR is not valid – need for DPGS “manual” orchestration
IOCP High Level Plan, 8 September 2009
11
Summary of Cold Sky Views
LAUNCH
1
2
3
Inertial < 1orbit
FTR
4
0
5X
6
7
9
10
11
12
13
14
15
16
17
18
19
 6 months
5
XMAS
8
(27 weeks)
1
21
22
Zenith 1.1 orbit
NIR
Zenith
Verifications
2
20
Inertial < 1orbit
Verifications
23
3
Key Point
1 week
IOCP High Level Plan, 8 September 2009
12
First Calibration Time Line
Week
Activity
Output
Calibration Progress
Long Calibration
PMS
FwF(0)
FwF shape
U-offsets
• LICEF calibration
• FwF calibration
• Offset calibration (common LO)
External Calibration
FTR
(dual pol)
• Antenna Patterns Validation
• Flat Target Response in Dual
• NIR calibration
• Cold Sky LICEF calibration
Plain Dual Pol + LO cal
LO phase
• LO phase time evolution
3
IOCP High Level Plan, 8 September 2009
13
First Calibration Time Line
Week
4-5
Activity
Output
Calibration Progress
Electrical Stability
Variation of:
PMS
FwF(0)
FwF shape
U-offsets
over
temperature
• LICEF calibration
• FwF calibration
• Offset calibration (common LO)
All above over temperature
DUAL POL MODE FIRST CALIBRATION COMPLETED
6
External Calibration
FTR
(full pol)
• Flat Target Response in Full
FULL POL MODE FIRST CALIBRATION COMPLETED
IOCP High Level Plan, 8 September 2009
14
First Calibration Time-line
LAUNCH
1
2
3
L1+DPGS
L1PP
L1PP
L1PP start
4
0
5X
D
8
XMAS
6
 6 months
5
7
F
9
10
11
13
14
15
1
16
17
18
19
21
22
23
(27 weeks)
12
2
20
3
1 week
IOCP High Level Plan, 8 September 2009
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
15
LEOP
LAUNCH
PLM Switch ON
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.
IOCP High Level Plan, 8 September 2009
16
SODAP
Week 1
Week 2
Week 3
0
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 /
IOCP High Level Plan, 8 September 2009
17
SODAP Activities
Week 1
Week 2
Week 3
0
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…).
IOCP High Level Plan, 8 September 2009
18
Week 1
LEOP
Week 1
Week 2
Day 14 of LEOP:
Payload Switch ON
Plain Full Pol
MON
TUE
WED
IOCP High Level Plan, 8 September 2009
THU
FRI
SAT
SUN
19
Week 2
Week 1
Week 2
Week 3
0
Galactic Pole – Inertial 30’
Flip-over
Zenithal
110’
Inertial 2’
Plain Full Pol
MON
TUE
Plain Full Pol
WED
IOCP High Level Plan, 8 September 2009
THU
FRI
SAT
SUN
20
Week 3
Week 2
Week 3
Week 4
0
Galactic Pole – Inertial
(FTR in Dual Pol and NIR)
S-band check - Zenith
S-band check - Zenith
Key Point 0
0
Correlator Test
Plain Full Pol (+ LO Cal )
First Image Opportunity
Long Calibration
MON
TUE
WED
IOCP High Level Plan, 8 September 2009
THU
FRI
SAT
SUN
21
MIRAS Payload Commissioning
4
5
5X
6
7
XMAS
9
8
1
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.
IOCP High Level Plan, 8 September 2009
22
Week 4
Week 3
Week 4
Week 5
0
XMAS
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
IOCP High Level Plan, 8 September 2009
23
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)
IOCP High Level Plan, 8 September 2009
24
Week 4
Week 3
Week 4
Week 5
XMAS
0
Galaxy – Inertial
(absolute accuracy)
Default
Mode
SADM
Thermal Stability
Correlator Test
Electrical Stability
First Image Opportunity
Long Calibration
MON
TUE
WED
IOCP High Level Plan, 8 September 2009
THU
FRI
SAT
SUN
25
Week 5
Week 4
Week 5
Week 5X
XMAS
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)
IOCP High Level Plan, 8 September 2009
26
Week 5
Week 4
Week 5
Week 5X
XMAS
Moon – Inertial
XMAS
(X, S, STR RFI)
Electrical
Stability
Default Mode
Long Calibration
MON
TUE
WED
IOCP High Level Plan, 8 September 2009
THU
FRI
SAT
SUN
27
Week 5X
Week 5
Week 5X
Week 6
XMAS
This week is part of the Xmas holidays.
Activities:
- Instrument in Default Mode
IOCP High Level Plan, 8 September 2009
28
Week 5X
Week 5
Week 5X
Week 6
XMAS
XMAS
Default Mode
MON
TUE
WED
IOCP High Level Plan, 8 September 2009
THU
FRI
SAT
SUN
29
Week 6
Week 5X
Week 6
Week 7
XMAS
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
IOCP High Level Plan, 8 September 2009
30
Week 6
Week 5
Week 6
Week 7
Galactic Pole – Inertial
(FTR in Full Pol and NIR)
Default
Mode
N
L E
Full Pol Mode
All-LICEF
NIR Stokes
Long Calibration
MON
TUE
WED
IOCP High Level Plan, 8 September 2009
THU
FRI
SAT
SUN
31
Week 7
Week 6
Week 7
Week 8
1
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.
IOCP High Level Plan, 8 September 2009
32
Week 7
Week 6
Week 7
Week 8
1
Galactic Pole – Inertial
Galactic Pole – Inertial
(Dual vs Full Pol)
(Dual vs Full Pol)
Full Pol
Mode
E
Default Mode
Long Calibration
MON
TUE
Default Mode
Long Calibration
WED
IOCP High Level Plan, 8 September 2009
THU
FRI
SAT
SUN
33
Week 8
Week 7
Week 8
Week 9
1
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)
IOCP High Level Plan, 8 September 2009
34
Week 8
Week 7
Week 8
Week 9
1
Galactic Pole – Inertial
(NIR leakage)
E
Default
Mode
1
Default Mode
Key Point 1
Long Calibration
MON
TUE
WED
IOCP High Level Plan, 8 September 2009
THU
FRI
SAT
SUN
35
Week 9
Week 8
Week 9
Week 10
1
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
IOCP High Level Plan, 8 September 2009
36
Week 9
Week 8
Week 9
Week 10
1
Galactic Pole – Inertial
(FTR in Dual Pol and NIR)
Default
Mode
N E
Dual Pol Mode
NIR PMS
Long Calibration
MON
TUE
WED
IOCP High Level Plan, 8 September 2009
THU
FRI
SAT
SUN
37
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
IOCP High Level Plan, 8 September 2009
38
Weeks 10, 14, 18, 22
Week 10
Galactic Pole – Inertial
(FTR in Full Pol and NIR)
Dual Pol Mode
Full Pol Mode
Long Calibration
MON
TUE
WED
IOCP High Level Plan, 8 September 2009
THU
FRI
SAT
SUN
39
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
IOCP High Level Plan, 8 September 2009
40
Weeks 11, 15, 19
Week 11
1 Full Orbit Zenith Pointing
(NIR)
Dual Pol Mode
Full Pol Mode
Long Calibration
MON
TUE
WED
IOCP High Level Plan, 8 September 2009
THU
FRI
SAT
SUN
41
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
IOCP High Level Plan, 8 September 2009
42
Weeks 12, 20
Week 12
1 Full Orbit Zenith Pointing
(NIR)
Full Pol Mode
Dual Pol Mode
Long Calibration
MON
TUE
WED
IOCP High Level Plan, 8 September 2009
THU
FRI
SAT
SUN
43
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
IOCP High Level Plan, 8 September 2009
44
Weeks 13, 17, 21
Week 13
Galactic Pole - Inertial
(FTR in Dual Pol and NIR)
Dual Pol Mode
Full Pol Mode
Long Calibration
MON
TUE
WED
IOCP High Level Plan, 8 September 2009
THU
FRI
SAT
SUN
45
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)
IOCP High Level Plan, 8 September 2009
46
Week 16
Week 15
Week 16
Week 17
2
1 Full Orbit Zenith Pointing
(NIR)
Dual Pol Mode
2
Full Pol Mode
Key Point 2
Long Calibration
MON
TUE
WED
IOCP High Level Plan, 8 September 2009
THU
FRI
SAT
SUN
47
Week 23
Week 22
Week 23
3
Week 24
Operational
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
IOCP High Level Plan, 8 September 2009
48
Week 23
Week 22
Week 23
3
Week 24
Operational
Moon – Zenith Pointing
Full Pol Mode
3
Electrical Stability
Key Point 3
Long Calibration
MON
TUE
WED
IOCP High Level Plan, 8 September 2009
THU
FRI
SAT
SUN
49
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)
IOCP High Level Plan, 8 September 2009
50
S-band RFI Test Timeline
1.1 orbit (zenith) = 11 x 2 x 5 minutes
2x5 min
5 min
ON
OFF
1
2
3
4
5
IOCP High Level Plan, 8 September 2009
6
OFF
7
8
9
10
11 time
51
SADM Effects Test Timeline
Flat Target Acquisition (inertial pointing) =
740 epochs = 8 x 111 s
SADM
angle
222 s
+5
0
222 s
0
0
time
222 s
5
111 s
111 s
ETO time
(External Target Observation):
at ETO time, boresight = zenith
IOCP High Level Plan, 8 September 2009
52