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Dr. W. Devereux PalmerProgram Manager, Electronics DivisionARL Army Research [email protected]
Army Research in Acoustic Sensing
Encoding for Auditory Representations (EARs) Workshop 22 AUG 2011
Mr. Michael V. ScanlonChief, Acoustic and EM SensingARL Sensors and Electronic Devices [email protected]
DISTRIBUTION STATEMENT A. Approved for public release; distribution is unlimited.
Army Introduction
• Mr. Michael Scanlon– Chief, Acoustic and EM
Sensing Branch– Sensors and Electron
Devices Directorate– US Army Research
Laboratory
• Dr. Dev Palmer– Program Manager,
Electromagnetics, Microwaves, and Power
– Electronics Division– Engineering Sciences
Directorate– US Army Research Office
• Sensors and Sensor Systems– Detection– Classification– Situational awareness
DISTRIBUTION STATEMENT A. Approved for public release; distribution is unlimited.
• Basic Research– Phenomenology– Minimum energy, high fidelity
components and circuit architectures
– Solving the “cocktail party problem”
ARL Role in Army S&T
Infrastructure/
Environmental
Strategic DefenseMaterielPersonnel Medical
Army Materiel
Command
AMC
ARL provides underpinning Science, Technology, and Analysis to
the Army
ARL provides underpinning Science, Technology, and Analysis to
the Army
Research, Development
and Engineering
Command
RDECOM
G-1MEDCOM
Medical Command U.S. Army Corps
of Engineers
USACE
Strategic Missile
Defense Command
SMDC
Edgewood
Chem-Bio
Center
ECBC
Natick Soldier
Center
NSC
Communications
and Electronics
RDEC
CERDEC
Tank-
Automotive
RDEC
TARDEC
Simulation & Training
Technology Center
STTC
Armament
RDEC
ARDEC
Aviation
and Missile
RDEC
AMRDEC
Army Materiel
Systems
Analysis
Agency
AMSAA
Army
Research
Laboratory
ARL
DISTRIBUTION STATEMENT A. Approved for public release; distribution is unlimited.
Engineering SciencesEngineering SciencesPhysical SciencesPhysical SciencesMathematical & Information
Sciences
Mathematical & Information
Sciences
Deputy Director
for Basic Science
& Director ARO
Dr. David Skatrud
Deputy Director
for Basic Science
& Director ARO
Dr. David Skatrud
Associate Director
for Laboratory Operations
Ms. Teresa Kines
Associate Director
for Laboratory Operations
Ms. Teresa Kines
Associate Director
for Science & Technology
Dr. Cary Chabalowski
Associate Director
for Science & Technology
Dr. Cary Chabalowski
Associate Director
for
Plans & Programs
Dr. Reed Skaggs
Associate Director
for
Plans & Programs
Dr. Reed Skaggs
Survivability/ Lethality
Analysis
Survivability/ Lethality
Analysis
Weapons &
Materials Research
Weapons &
Materials Research
Sensors &
Electron Devices
Sensors &
Electron Devices
Computational & Information
Sciences
Computational & Information
Sciences
Vehicle TechnologyVehicle Technology Human Research &
Engineering
Human Research &
Engineering
Army Research OfficeArmy Research Office
Sergeant Major
Steve Hornbach
Sergeant Major
Steve Hornbach
Director
Mr. John Miller
Director
Mr. John Miller
Military Deputy
COL Bobby Smith
Military Deputy
COL Bobby Smith
US Army Research Laboratory
DISTRIBUTION STATEMENT A. Approved for public release; distribution is unlimited.
EMP Program Vision and Thrusts
Program Vision
Create the ultimate Army radio that will receive and demodulate any
electromagnetic signal from any direction, modulate and transmit any
electromagnetic signal in any direction, reconfigure to implement a variety of radio
and sensor functions, adapt to the ambient environment, and respond to changing
requirements and missions
Program Thrusts
Electromagnetics and Antennas
RF Circuit Integration
Power Efficiency and Control
Photo Courtesy of U.S. Army SPC Chriss McCann DISTRIBUTION STATEMENT A. Approved for public release; distribution is unlimited.
EMP Basic Research Topics in Acoustics
• Investigation into the phenomenology underlying acoustic signals that are sparse in time and frequency
• Minimum energy, high fidelity components and circuit architectures required to transduce, encode, store, and transmit acoustic signals
• Statistical signal processing techniques for automatic separation, localization, and identification of multiple sources from a single stream of acoustical data
• New concepts and circuit architectures for beamforming at acoustic frequencies of interest
• Bio-inspired architectures addressing the above issues
DISTRIBUTION STATEMENT A. Approved for public release; distribution is unlimited.
Biological Acoustic Direction Finding Systems are Remarkable
• The human voice is centered around 1 kHz– Wavelength in air of about one foot
• Distance between human ears is around six inches– About half a wavelength at 1 kHz– Still can resolve source AZ and EL to within a
few degrees
• Equivalent to RF DF in the VHF band with a ~1.5 m aperture
• The parasitic fly Ormia Ochracea can localize the song of the cricket host to within 2º in both azimuth and elevation– The cricket’s song is 4.6 to 5.2 kHz– Ormia’s ears are only 0.5 mm apart
• Precise directional resolution with such a tiny aperture vastly exceeds current state-of-the-art in both acoustics and electromagnetics
www.anytimecostumes.com
Photo courtesy of Ron Miles, SUNY Binghamton
DISTRIBUTION STATEMENT A. Approved for public release; distribution is unlimited.
• Detect, localize & identify transient waveforms created by weapons & explosions
• Develop advanced sensors and signal processing techniques to improve detection & classification
• Investigate acoustic ground impedance & atmospheric effects & characterize impact on waveform structure
• Study wind & flow noise reduction techniques
• Investigate models to simulate waveform propagation to reduce data collection requirements; apply to classifier development
• Develop techniques for tracking helicopters or other aircraft in 3D
• Develop ground-based & elevated sensor platforms (aerostat & UAVs)
• Acoustics provides persistent & enhanced situational awareness
Acoustic and EM Sensing Branch Research Interests
DISTRIBUTION STATEMENT A. Approved for public release; distribution is unlimited.
Acoustic Sensing Research Taxonomy
Wind / FlowNoise
Sound Source
NumericalSimulation
Air & GroundParameters
Support VectorMachine
Markov Switching Vector
Auto-Regression
SparseRepresentation
MeteorologicalCorrection
Mortar, Rocket,Gunfire, IEDLocalization
ClassificationPropagation
Channel
Detection
Direction-of-Arrival
Localization
MicrophoneTechnology
PhysicalModeling
Signal generation
Signal measurement
Research topic
Proposed solution
Application
StructureMonitoring
HelicoptersTracking
Array SignalProcessing
Sensing
DISTRIBUTION STATEMENT A. Approved for public release; distribution is unlimited.