RAEGE

Transcrição

RAEGE

RAEGE
–
RED ATLÁNTICA DE
ESTACIONES GEODINÁMICAS Y ESPACIALES
Francisco Colomer 1
Jesús Gómez-González 1
Marlene C.S. Assis 2
José Antonio López-Fernández 1
1
IGN, Spain & 2 SRCTE, Portugal
http://www.raege.net/
RAEGE
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RED ATLÁNTICA DE
GGOS
Global
Geodetic
Observing
System
RAEGE
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RED ATLÁNTICA DE
RAEGE
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RED ATLÁNTICA DE
Spatial Data Infrastructure & Reference Frames
RAEGE
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Reference frames: highest accuracy and long-term stability
Global Monitoring
Information about Earth System
Geometry
Space
Techniques
C VLBI
O SLR/LLR
M GNSS
DORIS
B Altimetry
I InSAR
N Gravity/Magnet.
A Missions
T
Terrestrial
I Techniques
O
N Levelling
S Gravimetry
Tide Gauges
Seismometers
Magnetometers
Innovative Technologies
Earth System
Station
Position/Motion,
Sea Level Change,
Deformation
Sun/Moon
(Planets)
Atmosphere
Earth Rotation
Ocean
Precession/Nutation,
Polar Motion,
UT1, LOD
Hydrosphere
Cryosphere
Crust
Gravity/Magnet.
Mantle
Geocenter
Gravity/Magn. Field,
Temporal Variations
Core
Interpretation
I
N
T
E
R
A
C
T
I
O
N
S
Std
Ocean
Gravimetry
Geometry
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IERS:
International Earth Rotation and Reference Systems Service
IGS:
International GNSS Service
IVS:
International VLBI Service
ILRS:
International Laser Ranging Service
IDS:
International DORIS Service
IGFS:
International Gravity Field Service
BGI:
Bureau Gravimetrique International
IGeS:
International Geoid Service
ICET:
International Center for Earth Tides
ICGEM:
International Center for Global Earth Models
IDEMS:
International Digital Elevation Models Service
PSMSL:
Permanent Service for Mean Sea Level
IAS:
International Altimetry Service (in preparation)
BIPM:
Bureau International des Poids et Mesures
IBS:
IAG Bibliographic Service
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Very Long Baseline Interferometry (VLBI)
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5:
Level 4:
Moon,Planets
Planets
Moon
VLBI
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Level 1: Core Network (~ 40 Stations):
2-3 VLBI telescopes for continuous observations
SLR/LLR telescope for tracking of all major satellites
At least 3 GNSS antennas and receivers (controlled equipment changes)
DORIS beacon of the most recent generation
Ultra-stable oscillator for time and frequency keeping and transfer
Terrestrial survey instruments for permanent/automated local tie monitoring
Superconducting and absolute gravimeter (gravity missions, geocenter)
Meteorological sensors (pressure, temperature, humidity)
Seismometer for combination with deformation from space geodesy and
GNSS seismology
Additional sensors: water vapor radiometer, tiltmeters, gyroscopes,
ground water sensors, …
General Characteristics: highly automated, 24-hour/365 days,
latest technologies
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Real time data transfer and correlation (e-VLBI)
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Components of the International VLBI Service
for Geodesy and Astrometry (IVS)
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Present and future IVS goals
Products
Specification
Status 2002
Goals
(VLBI2010)
Polar
Motion
(xp, yp)
accuracy
product delivery
resolution
frequency of
solution
xp ~ 100, yp ~ 200 µas
1 – 4 weeks – 4 months
1 day
3 days/week
25 µas
1 day
10 min – 1 h
7 days/week
UT1-UTC
(DUT1)
accuracy
product delivery
resolution
5 – 20 µs
1 week
1 day
2 µs
1 day
10 min
Celestial
Pole
(dε; dψ)
accuracy
product delivery
resolution
frequency of
solution
100 – 400 µas
1 – 4 weeks – 4 months
1 day
~ 3 days/week
25 µas
1 day
7 days/week
TRF
(x, y, z)
accuracy
5 – 20 mm
2 mm
CRF
(α; δ)
accuracy
frequency of
solution
product delivery
0.25 – 3 mas
1 year
3 – 6 months
0.25 mas improve.
for more freq.
bands
1 month
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Radio frequency observing bands
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VLBI2010 System Characteristics
Current
VLBI2010
antenna size
5–100 m dish
~ 12 m dish
slew speed
~20–200 deg/min
≥ 360 deg/min
sensitivity
200–15,000 SEFD
≤ 2,500 SEFD
frequency range
S/X band
~2–15 (18) GHz
recording rate
128, 256 Mbps
8–16 Gbps
data transfer
usually ship disks,
some e-transfer
e-transfer, e-VLBI,
ship disks when required
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IVS network by 2017
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RAEGE workshop – Madrid, January 2009
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The RAEGE project
Establishment of an Spanish-Portuguese Network
of Geodynamical and Space Geodesy Stations
(RAEGE) by the installation and operation of four
fundamental geodetic/astronomical stations
provided with radio telescopes fulfilling the VLBI
2010 project specifications: Yebes (1), Canary Islands
(1) and Açores Islands (2).
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Baselines:
• Yebes – Tenerife : 1800 km
• Yebes – Santa María : 2000 km
• Yebes – Flores : 2400 km
• Tenerife – Flores : 2000 km
• Santa María – Flores : 540 km
RAEGE
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New VLBI2010 RAEGE radio telescope
by MT Mechatronics including geodetic capabilities set by IGN
Characteristics:
• 13.2 m RT, ring focus, ν ≥ 45 GHz (90 GHz)
• S/X and (future) wide band feeds
• 12º/sec (az) & 6º/sec (el) slew speeds
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Radiotelescope optics: ring focus
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VLBI2010 radio feed
ELEVEN feed:
• Developed at Chalmers University (Sweden) by Per-Simon Kildal.
• To operate in 2-14 GHz band.
• Coolable, but challenges to the mechanical construction.
RAEGE
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CRYOSTAT
S1
3dB/180º
S1
3dB/90º S/RHCP
S2
HYB1
SR
COUP_SL
S/LHCP
S3
S4
LNA_S2
3dB/180º
HYB2
Tri-Band
Coax
Feed
LNA_Ka1
ISO1
Ka/RHCP
Septum
Polarizer
&
Coupler
X1
X3
LNA_X1
3dB/90º X/RHCP
HYB5
X4
3dB/180º
COUP_XR
XR
X/LHCP
HYB6
S2
KaL
ISO2
HYB4
3dB/180º
X2
KaR
Ka/LHCP
LNA_Ka2
X2
- Receivers
SL
HYB3
X1
VLBI2010 developments
LNA_S1
COUP_SR
XL
COUP_XL
LNA_X2
- Optics and feeds
(S/X/Ka)
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Present status and 2011 work programme
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RAEGE station in Yebes (Guadalajara, Spain)
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RT 40m
SLR /GNSS
Gravimeter
RT2010
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RAEGE
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Gravimeter building and equipment at Yebes:
• Seven pillars for instrument comparison
• Two absolute gravimeters (A10 & FG5)
• One new superconducting gravimeter (GWR, May 2010)
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Connectivity status
- Currently connected at 1 Gbps
- Expecting dark fiber from RedIris-NOVA (2011)
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RED ATLÁNTICA DE
RAEGE station
in Canary Islands
(Spain)
To be equipped with:
- one radiotelescope
- one GNSS receiver
- one gravimeter
Possible location:
Tenerife
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Connectivity status
- Currently connected at 622 Mbps
- Dark fiber with RedIRIS NOVA by the end of 2011.
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RAEGE stations in Azores (Portugal)
North American
plate
Eurasian plate
African plate
RAEGE
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Santa Maria: Saramago
Aluvión
Conglomerado
Basaltos
01
/0
1
31 /20
0
/0
1/ 8
01 2 0
0
/0
3/ 8
31 20
08
/0
3
30 /2 0
0
/0
4/ 8
30 20
08
/0
5
29 /2 0
08
/0
6
29 /20
0
/0
7/ 8
28 2 0
08
/0
8
27 /2 0
0
/0
9/ 8
27 2 0
08
/1
0
26 /2 0
08
/1
1
26 /20
/1
0
2/ 8
20
08
km/h
Fecha
40
20
0
01/12/2008
01/11/2008
01/10/2008
01/09/2008
01/08/2008
01/07/2008
01/06/2008
01/05/2008
01/04/2008
01/03/2008
01/02/2008
01/01/2008
mm
01/12/2008
01/11/2008
01/10/2008
01/09/2008
01/08/2008
01/07/2008
01/06/2008
01/05/2008
01/04/2008
01/03/2008
01/02/2008
01/01/2008
Cº
RAEGE
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Meteorology and RFI
Temperature / Rain / Wind
(San Miguel)
30
Isla Ponta Delgada
25
20
15
10
Temperatura media
año 2008. Cº
5
0
Fecha
50
45
40
35
30
25
20
15
10
5
0
Isla Ponta Delgada
Precipitacion
Isla Ponta Delgada
Fecha
120
100
80
60
Velocidad Máxima del Viento
Velocidad Media del Viento
RFI measurements (1–26 GHz)
(Santa María)
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Flores: Lajes
Aluvión
Conglomerad
o
Basaltos
/0
1/
01
31
/0
km/h
Fecha
50
40
30
20
10
0
01/12/2008
01/11/2008
01/10/2008
01/09/2008
01/08/2008
01/07/2008
01/06/2008
01/05/2008
01/04/2008
01/03/2008
01/02/2008
01/01/2008
0
20
0
1/ 8
2
/0 00 8
3/
31 2 0
08
/0
3
3 0 /2 0
0
/0
4/ 8
30 2 0
08
/0
5
2 9 /2 0
08
/0
6
29 /2 0
0
/0
7/ 8
28 2 0
0
/0
8/ 8
27 2 0
0
/0
9/ 8
27 2 0
0
/1
0/ 8
26 2 0
08
/1
1
2 6 /2 0
/1
0
2/ 8
20
08
01
mm
Cº
20
15
Temperatura media
año 2008. Cº
10
5
0
Isla Flores
60
50
40
30
20
Precipitacion
10
Fecha
90
Isla Flores
80
70
60
Velocidad Máxima del Viento
Velocidad Media del Viento
Electric Field (dB(uV/m))
01/12/2008
01/11/2008
01/10/2008
01/09/2008
01/08/2008
01/07/2008
01/06/2008
01/05/2008
01/04/2008
01/03/2008
01/02/2008
01/01/2008
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Meteorology and RFI
Temperature / Rain / Wind
RFI measurements (1–26 GHz)
30
Isla Flores
25
80
Fecha
80
10
Flores RFI field strength
70
60
ES( f )
50
40
30
10
20
0
0
2
4
6
8
10
12
Fre que ncy (GHz)
f
14
16
18
20
22
24
26
27
RAEGE
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Connectivity status
- COLUMBUS-III network hosts 20 Gbps
RAEGE
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RED ATLÁNTICA DE
Final comments
• IGN has contracted the first three RAEGE antennas (Yebes,
Santa María, and Tenerife) to MT Mechatronics.
• Construction of antennas is started.
• First RAEGE radio telescope (Yebes) installed in 2012.
• Fiber optics infrastructure for network control and data
transmission in real time (16 Gbps/station).
• More:
• INGRID 2011 (Santander)
• IVS GM 2012 (Madrid) – http://www.oan.es/gm2012/

RAEGE

Transcrição

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