Download - OPS Forum SMA Validation PtI 15.08.2008
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Santa Maria Groundstation
Validation and Support to Ariane-5 ATV
OPS-G Forum
Gerhard Billig
15 July 2008
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Agenda
1. Groundstation Validation2. Infrastructure3. Operational Setup and Preparations4. Launch Operations5. Outlook
- Upgrade of Perth groundstation- Support to other Launcher families
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Groundstation Validation- Internally Tested Subsystems -
• Tracking Tests with Caltower / Satellites• Dedicated Autotrack Tests
• Monitoring and Control• TM reception and processing
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Autotrack Validation
• Angular velocity of launcher (as seen from the groundstation) was much higher than that of satellites
• Autotrack (dual frequency) was mandatory and primary mode of tracking
• Aircraft was chosen as carrier for transmitters• Trajectory was down-scaled to meet aircraft constraints:
• Height: ≈ 1200m
• Speed: ≈ 200km/h• Placement of antennas and power connection was difficult
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Track of Ariane-5 over SMA• 1st pass:
Min Slant Range: ≈ 180km at elevation 48°
• 2nd pass: Min Slant Range: 1100 km at elevation 10°
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Actual Flightpath
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Antenna positioning in aircraft
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Equipment Installation
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SMA Infrastructure Development: Original View
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Finalised Installation at SMA
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Inauguration
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Operations Preparations and
Launch Support
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Requirements for Launch Support from SMA
• Tracking: Dual-frequency AutotrackDO-Programtrack
• TM Reception and Storage• TM Extraction and Forward to CSG• Event Detection and Forward• Voice Communications
Comms
Acores
Voice
S-band
CSG/Kourou
TM Receiver
Voice
TM (CVI)
Pointing (DO)
Antenna Control
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Ariane-5 ATV: Mission Overview
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Ariane-5 ATV Tracking Network - Drivers -
• Mission Duration: 1.5 Orbits (0.5 orbits for GTO)• Long Cruise Phases complicate accurate orbit prediction
(Ariane inertial platform sensors)
• Inclusion of Radars at Europe resolved predication accuracy problems
• ISS was used as tracking target to exercise network-wide tracking campaigns
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Santa Maria Groundstation: Schedule for Operations
• March 2007: Meeting with CNES/CSG• May 2007: Operational Training with CNES• October 2007: Operations KoM with CNES at SMA
Start of Operational Preparations• November 2007: Stand-Alone Tests• January 2008: Operational Qualification with CNES• February 2008: Mission Readiness Tests (internal)• 9th March 2008: Launch of Ariane-5 ATV
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Outlook: Upgrade of Perth groundstation
-90
-60
-30
0
30
60
90
-180 -150 -120 -90 -60 -30 0 30 60 90 120 150 180
Ariane 5-ECA+Fregat
Soyuz+Fregat
CAR
NAN
KSH
PERT
REDUAUS
ACO
BAT
KRUBAN
TRI
KRN
-90
-60
-30
0
30
60
90
-180 -150 -120 -90 -60 -30 0 30 60 90 120 150 180
AR5 SSO
1500_sso
1200_sso
700_sso500_sso300_sso
PARE
MIG
PERT
SPIT
WAL
BER
STH
ANT
KRU
MASUOKI
DONG
KER
REF ELV
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Outlook: Support to other Launcher Families
• Vega SSO launch trajectory
• Vega Maiden Launch
• Soyuz