Expert Details

Expert in Sensor and Sonar Signal Processing

Expert ID: 727723 California, USA

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Expert's training and experience in communication, detection and estimation theory allows him to approach sensor and signal processing problems from a statistical and theoretical point of view. Optimal processing concepts such as Niemann-Pierson detection, Maximum Likelihood Estimation, and Cramer-Rao Lower Bounds provide means of determining the best performance achievable in a given statistical environment. Even if the optimal processing is not practically realizable, this theoretical basis is a standard by which other alternatives can be evaluated. It also provides a conceptual understanding of such key processing technologies as fixed interval and sequential signal detection, parameter and feature extraction, signal classification, signal direction and position finding, and tracking (e.g. - Kalman) systems. He has developed optimal detection and bearing estimation algorithms for sonobuoy systems, threat recognition algorithms forsurveillance sonar, sequential detector based track-while-scan algorithms for various sonars, adaptive systems which develop near-optimal solutions over time, and techniques for optimizing sonar transmit waveforms for a particular environment. He is an expert in optimal decision algorithms for signal classification.

Expert has developed end-to-end signal processing systems for a variety of sensor types, including passive and active undersea sonar, in-air active and passive acoustic sensors, millimeter wave radar and passive electromagnetic (radio) signals. This has included: the processing of arrays of sensors to reduce ambient noise and directional interferences; time-domain and frequency domain noise rejection; broadband and narrowband passive detection; whitening and normalization of signals; matched filter detection of signals; clustering of detected signals into contacts; parameter extraction algorithms (including direction and range, as well as features for use in signal classification); Kalman and alpha-beta filter based tracking algorithms; integration of detection and tracking through sequential detection; and contact classification using both signal and track characteristics. He has also done algorithm definition and prototyping in MATLAB, as well as specification for implementation in hardware or software. His experience working with implementers provides him the ability to assess the merits of concepts in terms of performance, computational load and cost. As a Principal Investigator on IR&D projects, he has developed concepts and algorithms for multistatic sonar, including adaptive spatial processing, normalization algorithms, direct blast processing, and coordination of data between multistatic receivers. His research activities have included active and passive classification techniques, adaptive beamforming and filtering, high resolution spectral analysis, dynamic compensation for towed array curvature, channel adaptive sonar concepts and waveform design using optimization techniques.

Expert is an expert in the use of adaptive techniques as a means of iteratively achieving near optimal results in detection and estimation systems. This includes adaptive array processing systems which adjust the processing of an array of sensor outputs with respect to an applicable criterion (such as maximum signal-to-noise ratio or Minimum Variance Distortionless Response); both active and passive noise cancellation to reduce background noise and interference in sensor outputs. Applications have included towed array sonars, a small array of microphones on the ground and microphones on an unmanned drone aircraft. His work in use of adaptive filters for direction finding with both narrowband and broadband signals led to an IEEE Senior Award and his doctoral dissertation provided landmark research on the effects of interference extent on adaptive spatial cancellation (see publications). His work in adaptive cancellation has been applied to sonar systems, microphones on army vehicles, and unattended acoustic ground sensors. He also performed a study that considered use of adaptive noise cancellation to reduce noise levels in automobiles. His work with time and frequency domain adaptive algorithms and both static and dynamic signals gives him the ability to address a diverse range of problems, as well as assess implementation issues.

Expert has over forty years of experience in sonar, sound detection, and acoustical signal processing to extract very weak signals from the ambient background, determine the source of the signals, localize the source, and track it over time. He has developed, analyzed and tested end-to-end sonar systems for fixed, submarine-based, surface ship-based and air deployed sonars. This has included cost-performance trade-offs of various sonars (e.g. - for DD(X)), system design, requirements definition, algorithm development (see signal processing expertise), and acoustic performance prediction as well as test planning and execution. He has worked on projects related to the BQS-13 and BQR-21 submarine sonars, the SQQ-89 surface ship sonar, the SURTASS/LFA surveillance sonars and the dipping sonar for the MH-60R helicopter. He was the technical director for the Multistatic Sonar (MSS), a Navy project to assess the use of multistatic operation for tactical sonar, and participated in all aspects of the program, including sea testing. He was the technical director of the ALFS Shallow Water Upgrade program and has consulted to L-3 Communications on their towed array and dipping sonar programs. His expertise includes the classification of acoustic contacts (especially environmental sensitivity), operator decision aids to reduce workload, and operator display formats. He provided guidance and ASW expertise to Raytheon’s IUSW21 program, including development of automation plans and Human-System Interface concepts for the ADM Workstation, workload metric development, at-sea assessment tools, and sea test plans. This work has continued with the analysis of requirements and the development of methods for verifying those requirements. In support of L-3 Ocean Systems, he developed the MH-60 Dipping Sonar classification and tracking concept and he has supported Lockheed Martin in the statistical tuning and evaluation of the ALFS classifier. His expertise and effectiveness in dealing with customers led to his inclusion on several Navy-Industry Peer Groups (see Career Accomplishments)

Upon retiring from Raytheon in 1999, Expert continued to consult to Raytheon Integrated Defense Systems on the DD(X) program in the development of sonar system concepts. He has provided assessment of new technologies developed under Broad Agency Announcements, performance prediction, sea test planning and data assessment, system and algorithm definition, workstation automation concepts, and display formats. He has also consulted in system requirements development and mapping of those requirements into system test procedures. He is currently supporting the analysis of system test data for critical sonar system elements.Since 2000, Expert has consulted to L-3 Communications in the area of sonar signal processing. He initially performed an assessment of their technology and technology development plans in relation to their business objectives, providing recommendations as to specific IR&D projects. He consulted on and participated on the red team for their successful proposal to provide a COTS upgrade to the MH-60R dipping sonar. He has provided processing definition, performance prediction and processing of sonar data for adaptive beamforming, noise cancellation, and multistatic sonar processing for their legacy systems.Consulting to of General Dynamics Advanced Information Systems, Expert supported the development of an active ultrasonic sensor for monitoring regions in remote areas. This included development of a beamforming concept for transmit and receive operation, definition of the processing (including a track while scan concept based on Wald's sequential detector), and extensive field testing. He also consulted on a program to develop a technique for localizing a contact electromagnetic radiation and a moving sensor platform. His work included development of a detection and tracking approach, theoretical analysis, prototyping and evaluation in MATLAB, and extensive field testing.Expert has consulted to Lockheed Martin Mission Systems & Sensors on acoustic systems for use on the MH-60R Helicopter program. This included a detailed assessment of the performance, suitability and producability of a new dipping sonar concept, culminating in presentations and recommendations to both Lockheed-Martin and U.S. Navy personnel. He also performed an analysis of the potential performance of existing target classifier techniques and of a new environmentally insensitive technique developed under a Small Business Innovative Research (SBIR) program by his company, Technology Focus LLC and Digital Systems Resources.In support of Textron, Incorporated, Expert provided consulting services on the use of noise rejection techniques for in-air acoustic systems. These techniques, which evolved from SBIR activities, were shown substantially reduce broadband noise in microphone outputs. Work included prototyping of algorithms in MATLAB, extensive testing on real data provided by the customer and recommendations regarding future programs.

Expert may consult nationally and internationally, and is also local to the following cities: Los Angeles, California - San Diego, California - Long Beach, California - Santa Ana, California - Anaheim, California - Riverside, California - Glendale, California - Huntington Beach, California - San Bernardino, California - Chula Vista, California

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Year Degree Subject Institution
Year: 1981 Degree: PhD Subject: Electrical Engineering - Communication Sciences Institution: University of Southern California
Year: 1975 Degree: MS Subject: Electrical Engineering Institution: Univeristy of Souther California
Year: 1966 Degree: BS Subject: Electrical Engineering Institution: University of Connecticut

Work History

Years Employer Title Department Responsibilities
Years: 1999 to 2010 Employer: Technology Focus LLC Title: Senior Partner Department: Responsibilities: Expert founded Technology Focus to leverage a combined 70 years of experience in research and development by providing strategic, programmatic and technical support to both industry and government customers, linking organizational objectives to requirements and technology. He served as a consultant to numerous companies and government organizations in the sensor processing field, both in a technical and business planning capacity. He was also principal investigator on eight projects under the Small Business Innovative Research (SBIR) program, developing state of the art sensor system and processing prototypes, including: new classification algorithm that is insensitive to variations in environmental conditions; improved noise cancellation for in-air passive systems; a new sensor and processing system for intruder detection; a technique for coordinated multistatic operation of air and surface sonar assets; a technique to provide undersea mine classification at longer ranges using multistatic operations; and an acoustic system for Army vehicles employing noise cancellation.
Years: 1997 to 1999 Employer: Raytheon Systems Company Title: Principal Scientist Department: Maritime Systems Responsibilities: When Raytheon acquired Hughes Aircraft, Expert was assigned as the capture team lead for IUSW-21, the undersea combat system for the next generation surface combatant, DD-21, and was responsible for strategy for IUSW-21 pursuits, advanced USW concepts for DD-21, development of IR&D programs to support IUSW-21 and proposals under IUSW-21 Broad Agency Announcements. He served as Raytheon's representative on the Navy’s IUSW-21 Peer Group working with a Navy, university and industry team to determine the direction for USW in the 21st century. He was instrumental in Raytheon acquiring a major role in the ADM development.
Years: 1976 to 1997 Employer: Hughes Aircraft Comapny Title: Principal Scientist Department: Ground Systems Responsibilities: Expert served as a technical lead for undersea and airborne acoustic sensor programs and provided concept development, processing algorithm development and statistical performance analysis. As a Principal Investigator on R&D projects, his research activities have included active and passive classification techniques, adaptive beam forming and noise cancellation, high resolution spectral analysis, dynamic compensation for acoustic array curvature, channel adaptive sonar concepts and waveform design using optimization techniques. He was the Technical Director of the Multistatic Sonar System (MSS) program, a prototype system to assess the use of multistatic tactical operations, through development, sea test, and data analysis phases. He was the Technical Director of a DARPA concept development study for an anti-helicopter mine employing acoustic detection, localization, and identification of helicopters, as well as MMW radar targeting. He was also Technical Director for the ALFS Shallow Water Upgrade program intended to improve operation in littoral waters.
Years: 1974 to 1976 Employer: Interstate Electronics Corporation Title: Staff Engineer Department: Advanced Sonar Responsibilities: Expert was responsible for system design and analysis of sonar evaluation and instrumentation systems. He performed development, performance analysis and simulation of algorithms. This included noise field modeling and studies for a Suspended Array Sonar, as well as analysis of methods to correct beam forming for array deformation. He also developed optimal processing algorithms for sonobuoy signal processing and techniques for synthesis of sonar signals in training systems.
Years: 1971 to 1974 Employer: Honeywell, Incorporated Title: Staff Engineer Department: Marine Systems Center Responsibilities: Expert was responsible for the design of digital inverse beam formers and target signature synthesizers for sonar training systems and was lead analyst for the AN/BQR-21 submarine sonar signal processing and display unit. He performed system design for digital upgrade of the AN/BQR-2B active sonar. He served as the main author and reviewer of the proposal.
Years: 1968 to 1971 Employer: Raytheon Company Title: Engineer Department: Submarine Signal Division Responsibilities: Expert was lead engineer for the design of a passive receiver for a small ship sonar eventually adopted for Navy use as well as providing system design of digital beam former and signal processing systems for a number of proposals including the AN/BQR-21 and AN/BQQ-5 submarine sonars. He was responsible for the design, checkout, and evaluation of several prototype digital sonar receivers.
Years: 1966 to 1968 Employer: Sylvania Corporation Title: Engineer Department: Government Systems Responsibilities: Expert was responsible for the design of prototype computer controlled switching systems for military field telephone use, as well as functional failure analysis and design checkout.

International Experience

Years Country / Region Summary
Years: 1991 to 1992 Country / Region: United Kingdom Summary: Working for Hughes Aircraft Company, Expert was the technical representative on a team working to apply surveillance sonar technology to the UK 2087 Sonar program. This included multiple trips to the UK to support system design and proposal development.

Career Accomplishments

Awards / Recognition
Tau Beta Pi
1986 IEEE ASSP Society
Senior Award
Hughes Aircraft Doctoral
Publications and Patents Summary
Expert has 9 refereed publications in adaptive signal processing and holds four patents.

Additional Experience

Marketing Experience
Expert has been selected to serve on a number of government (Navy) - industry teams for the development and assessment of technology. This includes: a Navy Peer Group convened to assess the readiness of the Navy's Echo Tracker Classifier (ETC) algorithm for deployment to the fleet; a Navy-Industry Working Group (serving as industry chair) to adapt the Navy's Echo Tracker Classifier (ETC) algorithm for Dipping Sonar use; and the Navy’s IUSW-21 Peer Group working with a Navy, university and industry team to determine a direction for USW in the 21st century. These activities reflect the outstanding relationship he has developed with customers throughout his career. In addition, he was selected by Hughes Aircraft Company to attend the UCLA Executive Marketing Program, a six month intensive course on the application of marketing techniques in specific industries. This has provided a background for work done in technology assessment and planning to meet business objectives.
Other Relevant Experience
During his career, Expert has been involved in the identification of organizational technology needs with respect to business objectives and the development of Independent Research and Development programs to meet those needs. He has also been a manager, major contributor, and reviewer for hundreds of proposals. Since forming Technology Focus LLC, he has provided technology assessment, proposal development, and proposal red teaming to numerous organizations (including L-3 Communications, Raytheon, Digital Systems Resources, and General Dynamic) in the areas of sensor systems, signal processing, sonar systems and remote sensors.

Expert also has excellent written and oral communication skills. He has often been asked to provide presentations on complex concepts in venues where they must be understandable to less technical audiences. He has written hundreds of proposals and reports over the years, as well as being book manager for larger, multi-organizational efforts. He has been employed as a reviewer and red team member for proposals. His excellent communication skills and personality have made him a trusted adviser to management and customer throughout his career.

Fields of Expertise

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