USNA S.C.I.E.N.C.E Experiment

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UNCLASS
USNA-0203 Space Communications International
Experiment Network Classroom Experience
DoD Space Experiments Review Board (SERB)Nov 2006
Bob Bruninga US Naval Academy Small Satellite
Program 410-293-6417 bruninga_at_usna.edu Sponsor
US Naval Academy
UNCLASS
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SCIENCE (USNA-0203)Experiment Concept
!

• Objective
• Education of future Naval Officers in Space
  Programs and Technology
• Low cost 1200/9600 baud telemetry bus for STP
  Experiments
• Experimental UHF transponders for DOD student
  education/training

• Description
• ISS attached or Free-flyer
• Multichannel VHF / UHF transponders
• Multimodes Voice, Telemetry,Video, Image, Data,
  Msgs
• Ground Stations
• Internet-linked Global Volunteer network
• Off-the-shelf, low-cost (100 to 200)
  transceivers
• Downloadable software defined sound-card modems
• Open-ended experimental bandwidth
• Complementary Experiments
• ODTML Ocean Data
• UHF RFI Mitigation
• MIDN Human physiology Radiation Detector

OR

• Previous Priority
• 43 of 43 2005 DoD SERB

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SCIENCE (USNA-0203)Technology Development
!

• Major Instrument or Equipment
• ODTML
• UHF RFI Mitigation Receiver
• Multiple UHF transponders
• Multiple modes (voice, data, TDMA FDMA)
• Supports additional experiments (1200/9600 bd)
• Instrument or Equipment Operation
• Educational Experiments/Communication
• Science data from attached experiments
• Remote Sensor Data Relay

• Experiment Funding

• Hardware Status
• Technology is Mature
• Technology is Space proven on PCSATS
• CDR Spring 2007
• Flight Ready Spring 2008

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SCIENCE (USNA-0203)Military Relevance

• Military Needs
• Support additional STP experiments (1200/9600
  baud links)
• ODTML, MIDN, UHF RFI Mitigation Receiver
• Education of Midshipmen and Space Cadre in Space
  Applications
• DOD Schools Service Academies (4)
• Graduate Institutions (3)
• ROTC Units (550 Schools)
• DOD Comms Cadre Civil Air Patrol (1800 units)
• Military Affiliate Radio Stations (8000)
• US Coast Guard Auxiliaries (33,000)

Ocean Buoys w/ RF Terminals
GROUND STATION
Documentation USSpaceCom Long Range Plan,
p77-79
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SCIENCE (USNA-0203)Flight Requirements
!

• Need for Spaceflight
• ODTML and UHF RFI coverage
• Communications Orbit for Global coverage and range

• Requested STP Services
• Launch Services
• Launch Integration

• Experiment / Flight Data
• Attached payload or Free-flyer
• Apogee 400 to 800 km
• Perigee 400 to 800 km
• Inclination 20 to 98 deg (lower if higher)
• Physical Data 0.25m3, 25 kg, nominal 50 W
• Shuttle/ISS Required No Acceptable Yes
• Experiment Retrieval Required No
• Repetitive/incremental step flights No

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SCIENCE (USNA-0203)Data Application Plan
!

• Data Application Plan
• Real-time data collection and distribution by
  existing internet linked system
• No cost Operations by volunteer ground stations
  and other schools and universities
• Transparent data relay, collection, distribution.
  Independent of system operation
• Only sender and receiver of data need to
  collaborate
• WEB Browser access to all data

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Psat USNA-0601
UFO RFI Mitigation Receiver
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Psat USNA-0601
ODTML Mission
Ocean Buoys w/ RF Terminals
GROUND STATION
ODTML
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Global Internet Linked Ground Stations
SCIENCE USNA-0203
All downlinks available live on web via
Participating internet linked Ground Stations

www.ariss.net pcsat.aprs.org
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SCIENCE USNA-0203
Space User Baseline
PCSAT validates our links
See www.ariss.net
PCSAT2 User Plot 18 Apr 06
Vandegriff
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SCIENCE (USNA-0203)Potential Experimental Users
Background

• SCIENCE is a low cost educational transponder
  supporting not only ODTML, MIDN and other
  experiments but also University and School
  Experiments.

• The University channels can potentially draw
  from over 30,000 experimenters for easy
  assessment of loading and scaling issues.

• Not only the sensors and users exist, but the
  global Internet collection and distribution
  system also exists from PCSAT1 2.

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SCIENCE (USNA-0203)Typical User Downlink Access
This data is LIVE
Google for USNA Buoy Select USNA-1
Google WB4APR-9
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S.C.I.E.N.C.E TRANSPONDERS
SCIENCE USNA-0203
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Digital Transponder
SCIENCE USNA-0203
Telemetry system has 1200/9600 baud available

• STP Experiments can interface to serial ports here

• PCsat

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Previous Experiments with Manned Space
SCIENCE USNA-0203
ARISS
Future S.C.I.E.N.C.E
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Outreach Objectives
SCIENCE USNA-0203
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NASA Interest
SCIENCE USNA-0203
NASA is invested in ARISS/Educational and
Outreach objectives
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ISS Crew using ARISS
SCIENCE USNA-0203
Data Voice
250 contacts in 24 hrs
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Multimode Capabilities
SCIENCE USNA-0203
Video, Image, Telemetry, Data, Experimental
Modes, Low Bandwidth high user multiplexing
Heres where we fit in.
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DOD Synergy with Educational Experimenters
SCIENCE (USNA-0203)
PCsat Data Experiment in F-16 Aircraft
Rome Air Development Center

• Typical Low Cost Experiment

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20 Simultaneous Users in 3 KHz
SCIENCE USNA-0203
Solves number 1 ARISS problem Uplink CONTENTION!

• User station is simply free software and Laptop
  with soundcard connected to any UHF/VHF
  transceiver

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PSK-31 Narrowband
SCIENCE USNA-0203
Just 3 Khz can support almost 30 users (6 shown)
Audio Spectrogram
lt-Strong user
lt-3 users
ltOne innovative user!
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Live-Direct Video/Imaging
SCIENCE USNA-0203
Joey, let me send you a picture!
Heres what we see out the window
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Minimum School Station and Experiments
SCIENCE USNA-0203
OR
OR
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Maximum School Station
SCIENCE USNA-0203
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SCIENCE USNA-0203
Questions?