Transcript DOT&E Spectrum Efficiency Initiatives

US Spectrum Efficiency
Initiatives
Darrell Ernst
October 2001
Agenda
 Background
 DOT&E Spectrum Stewardship Initiative
 Central Test & Evaluation Investment Program
 Science & Technology Initiative
Background - DOT&E Mission
 Mr. Tom Christie, Director, Operational Test & Evaluation
 Responsible to SecDef, Congress for operational test &
evaluation of all DOD weapon systems
 Assumed responsibility for oversight of DOD test resources
and test ranges in 1999
Background - Resources & Ranges
 Mr. John Gehrig, DOT&E Deputy Director for Resources &
Ranges (R&R)
 Responsible for administrative oversight of DOD Major Range
and Test Facility Base (MRTFB)
 Manages research & development of technologies for T&E
- Includes CTEIP and S&T programs
Background - T&E Encroachment
 WRC 97:
- Lost 2310-2360 MHz - telemetry
- 1452-1492 MHz reallocated by other nations from
telemetry to DAB (Set stage for expensive compromise
with WorldSpace)
 OBRA 93
- 235 MHz of Federal spectrum reallocated for auction to
industry
- T&E had operations in every reallocated band
 BBA 97
- Lost 2385-2390 MHz - telemetry
- Lost 1432-1435 MHz - last of TSPI band above 1390 MHz
 WRC 2K/IMT-2000
- Loss of 1710-1770 MHz probable
 T&E bandwidth requirements increasing exponentially
DOT&E Spectrum Stewardship Initiative
 Dr. Pat Sanders, Director, Test, Systems Engineering &
Evaluation (DTSE&E), directed R&R to devise initiative to
respond to encroachment of T&E spectrum
 R&R developed 3-pronged approach
- Respond to imminent encroachments
Develop technological solutions for improved usage of
spectrum
- Devise new methods and technologies for addressing
long-term needs
 RSRWG established for coordination among major T&E
spectrum users
- DOD (represented by R&R)
- NASA (represented by GSRC)
- US Aircraft manufacturers (represented by AFTRCC)
 CTEIP used for technology development
-
Central Test & Evaluation Investment Program
 Develop technologies and capabilities needed by Services for
T&E of weapon systems
- $115M - $150M per year
$51M programmed for spectrum technologies in current 5
year cycle
- Derrick Hinton is CTEIP PEM
 Two CTEIP projects leading spectrum technology
development
ARTM - Advance Range Telemetry
- FIT - Flexible Interoperable Transceiver
 Major new project in early formulation stage
- RSWN - Range & Space Wireless Network
-
-
CTEIP - ARTM
 5 year project to develop spectrum efficient technologies for
telemetry
 First product being delivered now: FQPSK telemetry
transmitter & demodulator
100% improvement in spectrum efficiency
 Second tier transmitter will provide 150 % improvement over
current systems
 Automated spectrum management tool in development
Phase II system delivered in June
- Tool allows more users to be assigned to bands at same
time
 Bit reduction research being conducted
- Data compression
Dynamic data set selection
-
-
CTEIP - FIT
 5 year program to develop standard spectrum-efficient data
link standard for test & training ranges
 Specification delivered this year
Being adopted by RCC as range standard
 Shaped Offset QPSK prototype currently in testing by ranges
- Efficiencies exceeding 100% gain over existing systems
 FIT being used as design reference for two major CTEIP
acquisitions
EnRAP - Enhanced Range Applications Program (TSPI
data link)
- MSTCS - Multi-Service Target Control System
-
-
CTEIP - RSWN
 Early planning phase: Conceptually a high data rate wireless
network for space and terrestrial T&E communications
between ground networks and systems under test (SUT)
- Telemetry, TSPI, targets, scoring, SUT commanding,
simulation/HITL interface
 Spectrum efficiency major objective. Efficiency gains across
entire stack
- On-board data processing
- Dynamic data selection
- Advanced data compression
- Spectrum efficient transmission & security protocols
- Error correction for reducing test reruns (reduced on-air
time)
- Spectrum mining (adaptive spectrum radios)
- “Tier 3” waveforms (beyond ARTM)
- Real time spectrum management
Test and Evaluation/Science & Technology
Program
 Initiated to expedite technology transition from S&T
community to the T&E community
 DOT&E T&E/S&T program is direct result of DepSecDefdirected Sustainable Ranges initiative
$16M authorized for OT&E technology development FY02
 $4M for spectrum technology
- Planning to ramp program to $30M +/yr
 Wynn Atterbury, DOT&E/R&R is Program Manager
 Initial research topics include spectrally efficient bandwidth
techniques at super high frequencies, adaptive spectrum
utilization and directional antenna technologies
 Final research plan will depend on proposals selected
through Broad Area Announcements to be released in
November
-
S&T Initiative - Technology Thrusts
 Research areas include:
-
-
Spectrally efficient bandwidth techniques at super-high frequencies
Solid state technology for high power (5-10W) telemetry transmitters
Narrow or variable beamwidth directional antennas
Analysis of possibility of using current range infrastructure (L and S band
antennas or their modifications) for super-high frequencies.
Smart (adaptive) array antennas
Digital beamforming array techniques
Low-cost RF chips for high-frequencies
Electronically-controlled phased array antennas using neural network
beamforming array techniques
Piezoelectric aperture antennas providing the capability of electronically
controlled antenna shape and radiation patterns
Effects of Doppler shift on receiver tracking for coherent receivers.
(Coordinated with narrowing of antenna beamwidth investigation above).
Channel Characterization
Techniques for overcoming adverse channel effects
Summary
 DOT&E has major initiatives underway for increasing the
efficiency of spectrum usage by T&E systems
- Development of capabilities using current state-of-the-art
technologies
Research into advanced technologies for meeting future
needs
 Initial products beginning to be delivered
 Projected expenditures of $80M + over 5 years
-