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US Spectrum Efficiency Initiatives


US Spectrum Efficiency Initiatives Darrell Ernst October 2001 Agenda Background DOT&E Spectrum Stewardship Initiative Central Test & Evaluation Investment Program ... – PowerPoint PPT presentation

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Title: US Spectrum Efficiency Initiatives

US Spectrum Efficiency Initiatives
  • Darrell Ernst
  • October 2001

  • Background
  • DOTE Spectrum Stewardship Initiative
  • Central Test Evaluation Investment Program
  • Science Technology Initiative

Background - DOTE Mission
  • Mr. Tom Christie, Director, Operational Test
  • 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, DOTE Deputy Director for
    Resources Ranges (RR)
  • Responsible for administrative oversight of DOD
    Major Range and Test Facility Base (MRTFB)
  • Manages research development of technologies
    for TE
  • Includes CTEIP and ST programs

Background - TE 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
  • TE had operations in every reallocated band
  • BBA 97
  • Lost 2385-2390 MHz - telemetry
  • Lost 1432-1435 MHz - last of TSPI band above 1390
  • WRC 2K/IMT-2000
  • Loss of 1710-1770 MHz probable
  • TE bandwidth requirements increasing

DOTE Spectrum Stewardship Initiative
  • Dr. Pat Sanders, Director, Test, Systems
    Engineering Evaluation (DTSEE), directed RR
    to devise initiative to respond to encroachment
    of TE spectrum
  • RR 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
    TE spectrum users
  • DOD (represented by RR)
  • 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 TE 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
  • ARTM - Advance Range Telemetry
  • FIT - Flexible Interoperable Transceiver
  • Major new project in early formulation stage
  • RSWN - Range Space Wireless Network

  • 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

  • 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
  • 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

  • Early planning phase Conceptually a high data
    rate wireless network for space and terrestrial
    TE 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
  • 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
    ST community to the TE community
  • DOTE TE/ST program is direct result of
    DepSecDef-directed Sustainable Ranges initiative
  • 16M authorized for OTE technology development
  • 4M for spectrum technology
  • Planning to ramp program to 30M /yr
  • Wynn Atterbury, DOTE/RR 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

ST 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

  • DOTE has major initiatives underway for
    increasing the efficiency of spectrum usage by
    TE 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