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© 2
014
Airb
us D
efen
ce a
nd S
pace
– A
ll rig
hts
rese
rved
. The
repr
oduc
tion,
dis
tribu
tion
and
utili
zatio
n of
this
doc
umen
t as
wel
l as
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mun
icat
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of it
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nten
ts to
oth
ers
with
out e
xpre
ss a
utho
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ion
is
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ibite
d. O
ffend
ers
will
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t of d
amag
es. A
ll rig
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e ev
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gra
nt o
f a p
aten
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ility
mod
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Calibration/Validation Workshop 03/17 Aeolus Launch Preparations and In-flight Commissioning John Brewster - Airbus
© 2
014
Airb
us D
efen
ce a
nd S
pace
– A
ll rig
hts
rese
rved
. The
repr
oduc
tion,
dis
tribu
tion
and
utili
zatio
n of
this
doc
umen
t as
wel
l as
the
com
mun
icat
ion
of it
s co
nten
ts to
oth
ers
with
out e
xpre
ss a
utho
rizat
ion
is
proh
ibite
d. O
ffend
ers
will
be
held
liab
le fo
r the
pay
men
t of d
amag
es. A
ll rig
hts
rese
rved
in th
e ev
ent o
f the
gra
nt o
f a p
aten
t, ut
ility
mod
el o
r des
ign.
Aeolus Industrial Activities
2
Sine Vibration Acoustic
Launch Vehicle Separation
Thermal Vacuum Preparations Thermal Vacuum
Solar Array Integration Final System Tests
Launch campaign
Early Orbit Operations Instrument Switch on
Instrument Calibration Instrument Commissioning
Mechanical Environmental Testing
Thermal Environmental Testing
Final Assembly
Launch Campaign
Flight Operations
Now May 2017
July 2017
Transport to Launch Site
Nov 2017
Dec 2017
Mar 2018
© 2
014
Airb
us D
efen
ce a
nd S
pace
– A
ll rig
hts
rese
rved
. The
repr
oduc
tion,
dis
tribu
tion
and
utili
zatio
n of
this
doc
umen
t as
wel
l as
the
com
mun
icat
ion
of it
s co
nten
ts to
oth
ers
with
out e
xpre
ss a
utho
rizat
ion
is
proh
ibite
d. O
ffend
ers
will
be
held
liab
le fo
r the
pay
men
t of d
amag
es. A
ll rig
hts
rese
rved
in th
e ev
ent o
f the
gra
nt o
f a p
aten
t, ut
ility
mod
el o
r des
ign.
Aeolus undergoes Pre-launch Testing
3
Stevenage: Final integration
Toulouse: 1.Mechanical Testing 2.Post-Environmental Testing
Liege: Thermal Vacuum Testing
© 2
014
Airb
us D
efen
ce a
nd S
pace
– A
ll rig
hts
rese
rved
. The
repr
oduc
tion,
dis
tribu
tion
and
utili
zatio
n of
this
doc
umen
t as
wel
l as
the
com
mun
icat
ion
of it
s co
nten
ts to
oth
ers
with
out e
xpre
ss a
utho
rizat
ion
is
proh
ibite
d. O
ffend
ers
will
be
held
liab
le fo
r the
pay
men
t of d
amag
es. A
ll rig
hts
rese
rved
in th
e ev
ent o
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gra
nt o
f a p
aten
t, ut
ility
mod
el o
r des
ign.
Launch Campaign
4
Arrival & unpacking Fuelling Encapsulation
Integration on Launch Vehicle Final countdown & launch!
Image credit: ESA, Sentinal-2B and LPF missions
© 2
014
Airb
us D
efen
ce a
nd S
pace
– A
ll rig
hts
rese
rved
. The
repr
oduc
tion,
dis
tribu
tion
and
utili
zatio
n of
this
doc
umen
t as
wel
l as
the
com
mun
icat
ion
of it
s co
nten
ts to
oth
ers
with
out e
xpre
ss a
utho
rizat
ion
is
proh
ibite
d. O
ffend
ers
will
be
held
liab
le fo
r the
pay
men
t of d
amag
es. A
ll rig
hts
rese
rved
in th
e ev
ent o
f the
gra
nt o
f a p
aten
t, ut
ility
mod
el o
r des
ign.
Early Orbit Operations
5
Normal Mode: 18:00 orbit and 35 degree pitch bias to ensure optimum illumination conditions
Initial telemetry acquisition by Troll S-band Ground Station, Antarctica
Automatic Solar Array Deployment and Rotation
Orbit Repeat cycle of 111 complete orbits per week to facilitate planning by users
Separation from Vega Launcher
© 2
014
Airb
us D
efen
ce a
nd S
pace
– A
ll rig
hts
rese
rved
. The
repr
oduc
tion,
dis
tribu
tion
and
utili
zatio
n of
this
doc
umen
t as
wel
l as
the
com
mun
icat
ion
of it
s co
nten
ts to
oth
ers
with
out e
xpre
ss a
utho
rizat
ion
is
proh
ibite
d. O
ffend
ers
will
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held
liab
le fo
r the
pay
men
t of d
amag
es. A
ll rig
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e ev
ent o
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nt o
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aten
t, ut
ility
mod
el o
r des
ign.
6
Instrument Switch On
6
Aladin Control and Data Management (ACDM)
Transmit Laser Electronics (TLE)
Laser Heads (PLH and RLH)
Telescope
Detection Electronics Unit (DEU)
Mie and Rayleigh Spectrometers
Spacecraft Mass Memory
Science Data
1. Instrument Controller (ACDM) switch on
2. ACDM, spectrometers, and Detection Electronic Units (DEU) switch on and confirm receiver integrity by measuring noise level and sending products to Ground via Mass Memory in the On-board Computer
3. Laser Electronics (TLE) switch on and laser heads energised at low power
4. Laser heads energised at progressively higher power, echo received from atmosphere and processed by receivers. Science data sent to spacecraft mass memory for downlink to the ground.
© 2
014
Airb
us D
efen
ce a
nd S
pace
– A
ll rig
hts
rese
rved
. The
repr
oduc
tion,
dis
tribu
tion
and
utili
zatio
n of
this
doc
umen
t as
wel
l as
the
com
mun
icat
ion
of it
s co
nten
ts to
oth
ers
with
out e
xpre
ss a
utho
rizat
ion
is
proh
ibite
d. O
ffend
ers
will
be
held
liab
le fo
r the
pay
men
t of d
amag
es. A
ll rig
hts
rese
rved
in th
e ev
ent o
f the
gra
nt o
f a p
aten
t, ut
ility
mod
el o
r des
ign.
Instrument Calibration 1
7
Instrument Spectral Registration
Alignment of the transmitter, the Mie channel and the Rayleigh channels
Step 2 Align centre of Rayleigh Etalon to new laser frequency
Dark Current Calibration
Background noise in Imaging mode due to detector and receiver electronics
Mie Frequency Range
Mie Frequency Range
Step 1 Adjust laser frequency to maximise Mie Channel Frequency Range
Rayleigh centre
Transmit Laser UV Energy Maintenance
Perform analysis of laser energy sensitivity to control parameters (amplifier currents, temperatures) and modify parameters to maintain energy stability
Instrument Auto Test
Sweep laser frequency f0±5.5GHz and check receiver output of internal reference in Lidar mode • Verify Mie channel response • Verify Rayleigh filter shape • Verify Spectral Registration
© 2
014
Airb
us D
efen
ce a
nd S
pace
– A
ll rig
hts
rese
rved
. The
repr
oduc
tion,
dis
tribu
tion
and
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zatio
n of
this
doc
umen
t as
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l as
the
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mun
icat
ion
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nten
ts to
oth
ers
with
out e
xpre
ss a
utho
rizat
ion
is
proh
ibite
d. O
ffend
ers
will
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le fo
r the
pay
men
t of d
amag
es. A
ll rig
hts
rese
rved
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e ev
ent o
f the
gra
nt o
f a p
aten
t, ut
ility
mod
el o
r des
ign.
Instrument Calibration 2
8
Instrument Response Calibration
Detector response in Lidar mode when known wind speeds (frequencies) over dynamic range are injected
Response
(Small) Residual to Linear Fit
Instrument Defocus Calibration
Measure the diameter of the spots on the Rayleigh channel detector in order to estimate the defocus of the optical train and then to compensate it using the thermal refocusing capability of the telescope.
© 2
014
Airb
us D
efen
ce a
nd S
pace
– A
ll rig
hts
rese
rved
. The
repr
oduc
tion,
dis
tribu
tion
and
utili
zatio
n of
this
doc
umen
t as
wel
l as
the
com
mun
icat
ion
of it
s co
nten
ts to
oth
ers
with
out e
xpre
ss a
utho
rizat
ion
is
proh
ibite
d. O
ffend
ers
will
be
held
liab
le fo
r the
pay
men
t of d
amag
es. A
ll rig
hts
rese
rved
in th
e ev
ent o
f the
gra
nt o
f a p
aten
t, ut
ility
mod
el o
r des
ign.
Wind Speed Calibration using “Ground” Velocities
9
• Harmonic Bias Estimation (HBE) of residual ground velocities to remove biases due to misalignments and thermal effects;
• HBE process allows for multiple orbit collection to accommodate variable ground echo availability due to cloud coverage, albedo, and altitude;
• “Range Dependent Bias” compensation due to impact of variable incident angle of received signal.
• First order compensation of ground velocities along line of sight due to orbital motion and earth rotation using attitude steering law based on geolocation by spacecraft (rotation about nadir line);
• Generation of pseudo ground velocity by modified steering law enables confirmation of response slope
Orbital Time (seconds)
Apparent ground velocity (metres/sec)
© 2
014
Airb
us D
efen
ce a
nd S
pace
– A
ll rig
hts
rese
rved
. The
repr
oduc
tion,
dis
tribu
tion
and
utili
zatio
n of
this
doc
umen
t as
wel
l as
the
com
mun
icat
ion
of it
s co
nten
ts to
oth
ers
with
out e
xpre
ss a
utho
rizat
ion
is
proh
ibite
d. O
ffend
ers
will
be
held
liab
le fo
r the
pay
men
t of d
amag
es. A
ll rig
hts
rese
rved
in th
e ev
ent o
f the
gra
nt o
f a p
aten
t, ut
ility
mod
el o
r des
ign.
Instrument Commissioning
10
Use the HBE co-efficients in Level 1 Processing (L1P) to provide a wind speed correction for all altitudes. Using L1P, measure standard deviation
of the velocity of the ground echo and compare with predictions from mathematical model. Support ESA’s CalVal activities by
assisting the flight operations team to configure the instrument into its operating modes with the specified operating parameters Support the Handover of instrument
management to ESRIN by refinement of the weekly timeline, instrument procedures, and instrument settings Take part in In-Orbit Commissioning
Review to agree final completion of commissioning activities and beginning of Aeolus science mission.
© 2
014
Airb
us D
efen
ce a
nd S
pace
– A
ll rig
hts
rese
rved
. The
repr
oduc
tion,
dis
tribu
tion
and
utili
zatio
n of
this
doc
umen
t as
wel
l as
the
com
mun
icat
ion
of it
s co
nten
ts to
oth
ers
with
out e
xpre
ss a
utho
rizat
ion
is
proh
ibite
d. O
ffend
ers
will
be
held
liab
le fo
r the
pay
men
t of d
amag
es. A
ll rig
hts
rese
rved
in th
e ev
ent o
f the
gra
nt o
f a p
aten
t, ut
ility
mod
el o
r des
ign.
Summary
11
The Aeolus spacecraft system is nearing completion. Airbus has a detailed plan
for the remaining test campaigns, launch, and flight operations; Airbus is totally committed to the success of the Aeolus project and looks forward
to providing the customer and science community with the first wind measurements from the system.