Dr. W. Devereux Palmer Program Manager, Electronics Division ARL Army Research Office Army Research in Acoustic Sensing Encoding for Auditory Representations (EARs) Workshop 22 AUG 2011 Mr. Michael V. Scanlon Chief, Acoustic and EM Sensing ARL Sensors and Electronic Devices Directorate 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 Defense MaterielPersonnelMedical Army Materiel Command AMC ARL provides underpinning Science, Technology, and Analysis to the Army Research, Development and Engineering Command RDECOM G-1 MEDCOM 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 Sciences Physical 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 Weapons & Materials Research Weapons & Materials Research Sensors & Electron Devices Sensors & Electron Devices Computational & Information Sciences Vehicle Technology Human Research & Engineering Army 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 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 / Flow Noise Sound Source Numerical Simulation Air & Ground Parameters Support Vector Machine Markov Switching Vector Auto-Regression Sparse Representation Meteorological Correction Mortar, Rocket, Gunfire, IED Localization Classification Propagation Channel Detection Direction-of -Arrival Localization Microphone Technology Physical Modeling Signal generation Signal measurement Research topic Proposed solution Application Structure Monitoring Helicopters Tracking Array Signal Processing Sensing DISTRIBUTION STATEMENT A. Approved for public release; distribution is unlimited.