Chris McCormick Broad Reach Engineering Ccmcc@broad-reach
Chris McCormick Broad Reach Engineering Ccmcc@broad-reach
Chris McCormick Broad Reach Engineering Ccmcc@broad-reach
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October 2010<br />
Pyxis Receiver and<br />
CICERO Space System Progress<br />
<strong>Chris</strong> <strong>McCormick</strong><br />
<strong>Broad</strong> <strong>Reach</strong> <strong>Engineering</strong><br />
ccmcc@broad-<strong>reach</strong>.net<br />
15 April 2011<br />
1
October 2010<br />
XSS-11<br />
2005<br />
Minotaur<br />
Avionics<br />
COSMIC<br />
2006 (6x)<br />
Minotaur<br />
GPS Rx<br />
We’ve been busy, Over 14 Launches to date,<br />
9 more nearing completion<br />
TacSat-2<br />
2006 Minotaur<br />
Avionics, FSW<br />
GPS Rx, 2 P/L<br />
TerraSAR-X<br />
2006 Dnepr<br />
GPS Rx<br />
Tandem-X<br />
2010<br />
LRO<br />
2009 Atlas V<br />
Gimbal Drivers<br />
Space Station<br />
2011 Japan<br />
H2/ATV<br />
Gimbal Drivers<br />
Classified<br />
2006 Delta-II<br />
Avionics<br />
WV-1/2<br />
2007/2009<br />
Delta-II<br />
Payload Electronics<br />
Advanced<br />
EHF<br />
2010, Atlas<br />
P/L Avionics<br />
STP-SIV 1<br />
2010<br />
Minotaur<br />
Avionics<br />
Aquila<br />
2011<br />
Minotaur<br />
Avionics<br />
2<br />
Glory<br />
2011<br />
Taurus P/L<br />
Avionics
October 2010<br />
The Highlights<br />
� Focus on S/N, Latency, Quality and Quantity of soundings<br />
� Designed for Operational Requirements<br />
� High Reliable, Radiation Tolerant components and designs<br />
� L1/L2/L5 RF ASIC and Galileo Enabled processing<br />
�� Real Time Data- Latency measured in seconds<br />
� Quantity 24 s/c & GPS + Galileo, Persistence of system<br />
� Spacecraft Status<br />
� Instrument Status<br />
3
Spacecraft Attributes<br />
� ~40kg Small Satellite (about 55cm x 50cm x 35cm)<br />
� Attitude Determination Star Camera, Gyro, Magnetometer<br />
� 3-Axis Stabilized via 3 Wheels and 3 Magnetic Torque Rods<br />
� 5 Liter ADN “Green” Propellant, 3 Thrusters ~300m/sec<br />
� Deployed Solar Array – 70W OAP<br />
�� Li-Ion Batteries (28V,12AHr)<br />
� Primary Downlink via GEO, 475/464 kbps (Inmarsat SB-SAT)<br />
� Secondary maintenance link with USN/Prioranet<br />
� Integrated Avionics (similar to AMS, XSS-11, STP-SIV 1&2)<br />
� GPS RO & CTIP Payloads<br />
� 5+ Year On-Orbit Lifetime (expected > 10 years)<br />
October 2010<br />
4
Spacecraft Status<br />
� Updates from October 2010 design review<br />
October 2010<br />
� Changed from GPS-AD to Star Camera<br />
� Attitude Knowledge improvement from 0.2 deg. to 0.005 deg.<br />
� Have first prototype camera (at Space Symposium)<br />
� Flight version in development, lower power than GPS-AD<br />
� Received first EM Li-Ion Battery<br />
� Received first flight fuel tank & thrusters<br />
� Finished development of the Mirideon/440 card<br />
� 10 cards built, some out on demo, others used for GPS & SB-Sat<br />
� Testing so far in the 200MFLOPS, more ‘tuning’ needed<br />
� BSP improvements, memory access improvements & options<br />
� Change from the SpaceX F1e<br />
� Was 2 launches of 12 each, now reconfiguring<br />
5
� Flight Software<br />
October 2010<br />
Spacecraft Status cont’d<br />
� Purchased Octant Technologies<br />
� flight S/W & Guidance and Control experts,<br />
� auto-code tools & visual navigation experts (star tracking<br />
algorithms, proximity operations)<br />
�� Primary engineers that designed S/W for many our past missions<br />
� Tested some of the CICERO design and mission<br />
particulars with the Advanced Plug and Play demo for<br />
USAF (final delivery May 2011)<br />
6
Spacecraft Status cont’d<br />
� Real Time Data SB-SAT (DARPA/Inmarsat contract)<br />
October 2010<br />
� First 5 Inmarsat modem boards out of manufacturing next<br />
month (May 2011)<br />
� one 440 uP, two DSP’s, memory etc.<br />
� First testing with Inmarsat network later this summer<br />
�� Protocol Stack (~3G phone style) porting to 440 uP<br />
� Modulation/Demod Software Defined Radio port to DSP<br />
� RF Front end prototyping in work, COMDEV UK<br />
� First High Gain antenna “Type 6” ~15 dBic 475kbps this<br />
summer<br />
� All on track for Type Approval & Flight Delivery next year<br />
7
October 2010<br />
Space System Overview<br />
8
October 2010<br />
Typical “heritage”<br />
Avionics from BRE<br />
BRE Radiation Hard<br />
PowerPC 440 CPU<br />
Avionics<br />
Interface & Power<br />
Electronics with LEO<br />
and GEO Heritage<br />
CICERO Avionics<br />
Prototype<br />
9
Antenna<br />
Pointing<br />
Mechanism<br />
Inmarsat<br />
Terminal<br />
Magnetometer<br />
CTIP<br />
October 2010<br />
S-Band<br />
Antenna<br />
Spacecraft Overview<br />
Reaction<br />
Wheels (3x)<br />
S-Band<br />
Transceiver<br />
Avionics & Payload<br />
Electronics<br />
S-Band<br />
Antenna<br />
Rocket<br />
Engines (3x)<br />
10<br />
Li-Ion<br />
Batteries<br />
Magnetic<br />
Torquers<br />
(3x)<br />
5 Liter<br />
Propellant<br />
Tank<br />
Prop-<br />
System<br />
Piping
Propulsion System Panel<br />
� Prop panel integrated at prop vendor (Moog)<br />
� Interfaces to S/C via single power/data interface<br />
� Delivered to S/C I&T as one tested unit<br />
.<br />
October 2010<br />
Interface Envelop<br />
Specification as<br />
given to Moog Prop System<br />
Assembly shipped<br />
to I&T<br />
Prop System<br />
Integrated into<br />
spacecraft bus<br />
11
October 2010<br />
0.48m<br />
Spacecraft Overview<br />
Deployed Configuration<br />
12<br />
0.35m<br />
0.54m
October 2010<br />
Development Status<br />
13
October 2010<br />
Pyxis RO<br />
� Pyxis - GNSS Radio Occultation Receiver<br />
� Evolution from IGOR/IGOR+<br />
� Developed by <strong>Broad</strong> <strong>Reach</strong><br />
� 4 Antennas, GPS & Galileo<br />
� Radio Occultation Data<br />
� � ~2 dB more sensitive front end than COSMIC<br />
� Updated L1/L2 RF front end for PAZ<br />
� 3 freq ASIC next for Pyxis-RO<br />
� RF ASIC development in fast track now<br />
� New code developed over the past year<br />
� Setting up P/L interface user requirements<br />
24.0<br />
[9.45]<br />
14<br />
Pyxis<br />
DIMENSIONS ARE IN CM [INCHES]<br />
� Still working on publishing science interface w.r.t 3 rd<br />
party Open Loop routines<br />
IGOR+<br />
19.5<br />
[7.68]<br />
11.3<br />
[4.44]
October 2010<br />
GPS Flight Products<br />
High Reliability, High Performance<br />
Pyxis<br />
new<br />
IGOR<br />
Retired soon<br />
2 and 3 Frequency GPS<br />
Receivers And Sounding<br />
Instruments.<br />
Navigator<br />
new<br />
Single Frequency GPS Receivers<br />
3U format for LEO and GEO applications<br />
GEO version pictured. ~7 meter accuracy<br />
at GEO<br />
15
RO Antennas<br />
� Improved antenna design from COSMIC<br />
October 2010<br />
� Higher Gain ~ >2dB better over volume of interest<br />
� “Banana” Pattern to maximize gain, minimize thermal noise<br />
� Passively phase steered to accommodate S/C geometry<br />
� Ground Plane & Thermally coupled to structure<br />
COSMIC Antenna<br />
& Pattern<br />
CICERO Antenna<br />
& Pattern<br />
16
Congratulations on the 5 years<br />
Proud to have been a part of it all<br />
Thank You NSPO,<br />
October 2010<br />
Thank You UCAR,<br />
Thank You JPL<br />
17
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