status and strategies for cosmic-ii planning oct 10, 2008
TRANSCRIPT
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Status and Strategies for COSMIC-II Planning
Oct 10, 2008
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Outline
Status of NSPO/NSC planning efforts Status of NOAA planning efforts Strategy to bring the COSMIC-II project together New Receiver Developments Missions of Opportunity
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Status at NSPO• NSPO is currently working on three projects:
– FORMOSAT-5 (a FORMOSAT-2 follow-on, a remote sensing project)
– FORMOSAT-6 (a microsat project, payload to be defined)
– Development of a small launcher (designed for FORMOSAT-6)
• Currently NSPO does not have funding for COSMIC-II• NSPO is hoping to secure special funds from NSC for COSMIC-II• An Executive Board will meet in November and review all current
NSPO activities, and make recommendations to NSC. Reprogramming is necessary to make funds available for COSMIC-II
• NSPO would like U.S. to help their FORMOSAT-6 program, including payloads (prototype TriG?) and launcher. This may become a “risk reduction” project for COSMIC-II (if an agreement can be reached)
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NSC
• Lou Lee’s (NSC Chairman) position:– Like to have a mission that represents significant advancement over
COSMIC (e.g., more satellites, better receiver, better antenna gain, lower latency, …etc)
– NSPO needs to contribute resources (e.g., funds and people) toward COSMIC-II (should not expect NSC to pay 100%)
– Needs to stress new sciences made possible with COSMIC-II (NSC is not responsible for operation)
– Needs to demonstrate 50-50 share between U.S. and Taiwan (Taiwan should not pay more than 50%)
– Needs to have significant societal impact for Taiwan (e.g., improve typhoon prediction) – key factor to get approval by Taiwan congress
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Near Term Strategy
• What we need NSC/NSPO to do:– Authorize Nick Yen (and his team) to work with NOAA to develop a
preliminary program plan in October 2008.
– Establish a “COSMIC-II Planning Project” – allow NSPO and NOAA to work on a detailed program plan (for 1-2 years)
– Establish an oversight board to oversee COSMIC-II program development
– Establish a clear chain of commands for COSMIC-II planning (whom does Nick report to?)
– Identify “decision point” for moving forward with COSMIC-II (need to be synchronized with NOAA decision making)
– Identify science team to work with U.S. science team
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Other Considerations for COSMIC-II Planning
Stick to name ‘COSMIC-II’ Target Launch for 2013
– Need to start development of TriG or similar payload
Develop appropriate contractual and legal vehicles (e.g., AIT-TECRO Agreements, TAAs)
Need to continue to promote COSMIC and its science applications Need to strengthen research, education and out reach Need to build connections with other international missions
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Status of NOAA planning efforts
Submit a preliminary budget plan (for 2011 budget) for an RO mission by November 15, 2008 – Few details needed here, identify roles for various partners, develop funding
profile
DAVE?
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New Receiver Developments
Pyxis by BRE– GPS/Galileo, 1X4 HF patch antenna?
– ROM cost $1M/unit?
– Some funding/schedule risk (2011 Cicero launch), low technical risk
TriG by JPL/BRE– GPS/Galileo/GLONASS(CDMA), large antenna w/ beem steering
– ROM cost, $7M+$1M/unit (no I&T, no data processing)
– 30-month effort, Need funding NOW
ROSA by Italian Space Agency– Few details known, OL tracking
– Launch 2008-9
GRAS by Saab/Erickson– High gain antenna, expensive, massive, power hungry
JAVAD/GFZ– Few details known
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IGOR vs. IGOR+ vs. Pyxis
IGOR/IGOR+
Pyxis
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Pyxis Specification Highlights
– 3 Frequencies Required: L1, L2 and L5• L5 is difficult to process w/ current direct sampling design
– 2-bit Sampler Desired: ~1dB increase in SNR• 2-bit RF samplers difficult to find and relatively power-hungry and large in
size
– Noise floor reduction• Dominated by antenna filter/LNA >30dB Gain, <0.5dB NF LNA
– Size reduction• Work to incorporate the current DIP/AMP/Sampler functionalities all within
the volume of a current DIP/AMP box
– Maintain or reduce power consumption of current• Including addition of higher-power LNA, OCXO, and new L5 signal
– Elimination of commercial grade components– Attitude Determination Capability– API
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RF Front EndL1 / L2
JCA LNA's(x4)
Diplexer Modules(x4)
Amplifier Modules(x4)
RF Sampler Signal Prcocessing Hardware
JPLTurboRogue
ASICs (L1/L2)(x4)
48 Tracking Channels
Computing Platform
PPC603
8MB SDRAM
8MB Flash
RS422 Interface'BitGrabber' Xilinx
Downconverter Baseband Processing (x2 Redundant)
IGOR
RF Front EndL1 / L2
RF Sampler
Signal Prcocessing Hardware
XilinxXQR2V6000
FPGA
VHDL of x4TurboRogue
ASICs (L1/L2) & BitGrabber
48 Tracking Channels
Computing Platform
PPC603
8MB SDRAM
12MB Flash
RS422 Interface
Downconverter Baseband Processing (x2 Redundant)
IGOR +
Sample Clock
MTI OCXOSample Clock38.6556MHz
PECL-based Clock Dist.
Sample Clock
PECL-based Clock Dist. (x2)
Tellurian VC-TCXOSample Clock
38.656MHz (x2)
1-bit PECL Sampling Ckts. (x8)
RF Sampler
RF Front EndL1 / L2 / L5
MiteqLNA's(x4)
Signal Prcocessing Hardware
Xilinx FPGA orCustom ASIC
VHDL-based withGPS L1-L2-L5
andGalileo L1-E5a
Capability
96+ Tracking Channels
Computing Platform
BRE440 SoC
512MB DDR-DRAM
8MB+ CRAM / Flash
RS422 / Spacewire /Ethernet /Interface
Downconverter Baseband Processing
Pyxis
Sample Clock
MTI (???)OCXO
Sample Clock20.456 or
40.912MHz
RF to IFMixers / Amps
(x12)
LO Synthesizers(x3) or (x12)
RF Sampler
2-bit Comparator/FFSamplers (x12)
Custom RF-IC or Discrete Implementation
JCA LNA's(x4)
Diplexer Modules(x4)
Amplifier Modules(x4)
1-bit PECL Sampling Ckts. (x8)
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Size Comparison
2-Channel Sampler
3.0” x 1.5” x 0.5”
Dual Channel (L1 and L2) Discrete
Modules with 1-bit Samplers:
Triple Channel (L1, L2, and L5) RFIC with Integrated 2-bit Samplers:
3.0” x 1.5” x 0.5”
0.35” x 0.35”, Plus supporting filters
2.0” x 1.25”
GNSS RF-IC
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TriG GPS RO Receiver JPL/BRE submitted whitepaper/proposal (30-month) to NOAA Currently first choice in NOAA GPS RO plans GPS + Galileo + GLONASS Space hardened electronics (radiation tolerant CPU and RF down
converters) Tracks new signals:
– GPS L2C and L5– Galileo Open Signal– GLONASS’ CDMA Upgrade
4-6 antennas, with identical RF-hybrid chips Digital beam steering from 4-6 antennas Dedicated CPU for science processing BlackJack based real-time GNSS processing (reliable, flexible)
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Missions of Opportunity“Poor Man’s ” Constellation
We should do this anyway for science - less useful for operations Pros
– Lowest cost (to US/NOAA)– Some science to be done– Demonstrate truly receiver, platform independence– Supplement COSMIC, METOP, COSMIC-II data
Cons– Not optimized for global observations– Not an operational system – Degradation compared to COSMIC– Multiple platforms, receivers, software challenges– Significant efforts required for coordination and management– Need a center to serve as data repository (UCAR?) and to ensure conformity
to uniform data format and processing software
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Future RO MissionsMission Launch-
DurationDuration
(years)
GPS RO
Payload
# Soundings/day
(# SC)
Remarks
COSMIC 4/2006 ~5 IGOR, HF antennas 2500 (6) Real time-ops
METOP-A 5/2007 10 GRAS 600 Real time-ops
TerraSAR-X 7/2005 5 IGOR, HF antennas 400 RT?
Megha-Tropiques
2008-9 3 Italian ROSA 600 Equatorial, RT?
Ocean-Sat2 2008 5 Italian ROSA 300 Polar, Setting only, RT?
TanDEM-X 2009 Q2 IGOR 500
KOMPSAT-5 2009 Q2 IGOR+ 500 Limited Mem, RT?
AQUARIUS/SAC-D
5/2010 3 ROSA 600
METOP-B 2011 10 GRAS 600
CICERO 2011 5+ Pyxis/TriG 600 X 2 X (12/24)
Planned
COSMIC-II 2012 5+ Pyxis/TriG 600 X 2 X (12/24)
EQUARS 2012 IGOR+ 500
Iridium 2013 10 Pyxis/TriG 600 X 2 X 66 Proposal