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@usna.edu
Sponsor: US Naval Academy
UNCLASS
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
OR
• 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:
Previous Priority:
•43 of 43: 2005 DoD SERB
3/14/2016
• ODTML – Ocean Data
• UHF RFI Mitigation
• MIDN – Human physiology Radiation Detector
2006 DoD SERB
2
!
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:
Prior FY06 FY07 FY08
0 10k
20k
20k
0 10k
20k
20k
Hardware Status:
• Technology is Mature
• Technology is Space proven on PCSATS
• CDR: Spring 2007
• Flight Ready: Spring 2008
3/14/2016
2006 DoD SERB
3
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)
Ocean Buoys
w/ RF
Terminals
GROUND
STATION
Military Affiliate Radio Stations (8000)
US Coast Guard Auxiliaries (33,000)
Documentation:
3/14/2016
2006 DoD SERB
USSpaceCom Long Range Plan, p77-79
4
!
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]
3/14/2016
2006 DoD SERB
5
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
3/14/2016
2006 DoD SERB
6
Psat
USNA-0601
3/14/2016
UFO RFI Mitigation Receiver
2006 DoD SERB
7
Psat
USNA-0601
ODTML Mission
Ocean Buoys w/
RF Terminals
GROU
ND
STATI
ON
ODTML
3/14/2016
2006 DoD SERB
8
SCIENCE
USNA-0203
Global Internet Linked Ground Stations
All downlinks available live on web via
Participating internet linked Ground Stations
www.ariss.net
pcsat.aprs.org
SCIENCE
USNA-0203
Space User Baseline
PCSAT validates our links
See www.ariss.net
PCSAT2 User Plot 18 Apr 06
3/14/2016
2006 DoD SERB
Vandegriff
10
Background
SCIENCE (USNA-0203)
Potential Experimental Users
 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.

3/14/2016
Not only the sensors and users exist, but the global Internet
collection and distribution system also exists from PCSAT1 & 2.
2006 DoD SERB
11
SCIENCE (USNA-0203)
Typical User Downlink Access
This data is LIVE
Google for “USNA Buoy” Select USNA-1
Google
WB4APR-9
3/14/2016
2006 DoD SERB
12
SCIENCE
USNA-0203
S.C.I.E.N.C.E TRANSPONDERS
SCIENCE
USNA-0203
Digital Transponder
Telemetry system has 1200/9600 baud available
•STP Experiments can interface to serial ports here
•PCsat
3/14/2016
2006 DoD SERB
14
SCIENCE
USNA-0203
Previous Experiments with Manned Space
ARISS
Future:
S.C.I.E.N.C.E
3/14/2016
2006 DoD SERB
15
SCIENCE
USNA-0203
3/14/2016
Outreach Objectives
2006 DoD SERB
16
SCIENCE
USNA-0203
NASA Interest
NASA is invested in
ARISS/Educational and
Outreach objectives
3/14/2016
2006 DoD SERB
17
SCIENCE
USNA-0203
Data
&
Voice
3/14/2016
ISS Crew using ARISS
250
contacts
in 24 hrs
2006 DoD SERB
18
SCIENCE
USNA-0203
Multimode Capabilities
Video, Image, Telemetry, Data, Experimental
Modes, Low Bandwidth high user multiplexing
Here’s where
we fit in.
3/14/2016
2006 DoD SERB
19
DOD Synergy with Educational Experimenters
SCIENCE (USNA-0203)
PCsat Data Experiment
in F-16 Aircraft
Rome Air
Development
Center
3/14/2016
•Typical Low Cost
Experiment
2006 DoD SERB
20
SCIENCE
USNA-0203
20+ Simultaneous Users in 3 KHz
Solves number 1 ARISS problem:Uplink CONTENTION!
•User station is simply free software and Laptop with
soundcard connected to any UHF/VHF transceiver
SCIENCE
USNA-0203
PSK-31 Narrowband
Just 3 Khz can support
almost 30 users (6 shown)
Audio
Spectrogram
<-3 users
<-Strong user
<One innovative user!
3/14/2016
2006 DoD SERB
22
SCIENCE
USNA-0203
Live-Direct Video/Imaging
“Joey, let
me send
you a
picture!”
3/14/2016
“Here’s
what we
see out the
window”
2006 DoD SERB
23
SCIENCE
USNA-0203
Minimum School Station and Experiments
OR
OR
3/14/2016
2006 DoD SERB
24
SCIENCE
Maximum School Station
USNA-0203
DIRECT CONTACT INSTALLATION
CIR. POL.
YAGI
PC WITH ORBIT
PREDICTION
PROGRAM
AND TRACKING
INTERFACE
AC
POWER
12 V
POWER
SUPPLY
ROTOR
CONTROL
UNIT
2 METER
AMPLIFIER
80-170 W
2 METER
TRANSCEIVER
AZ/EL
ROTOR
ANTENNA
PREAMP
PRIME STATION
UPS
12 V
POWER
SUPPLY
2 METER
AMPLIFIER
80-170 W
2 METER
TRANSCEIVER
BACKUP STATION
3/14/2016
2006 DoD SERB
COAX
2 METER
VERTICAL
ROOF TOP
25
SCIENCE
USNA-0203
Questions?
3/14/2016
2006 DoD SERB
26