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SensorWeb Data Fusion in Large Arrays of Microsensors. MURI Review Meeting Introduction/Overview Alan S. Willsky September 22, 2003. The Day’s Agenda. Introduction/Overview Research Presentations Summary. Introduction/Overview Outline.

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sensorweb data fusion in large arrays of microsensors

SensorWebData Fusion in Large Arrays of Microsensors

MURI Review Meeting


Alan S. Willsky

September 22, 2003

the day s agenda
The Day’s Agenda
  • Introduction/Overview
  • Research Presentations
  • Summary
introduction overview outline
Introduction/Overview Outline
  • Setting the stage: Intellectual themes and research concentration areas
  • Facts, Statistics, and Such
  • What we have heard from the EAB/TAC
  • Outline of remaining presentations and how they fit
intellectual themes
Intellectual Themes
  • IT-1: Consistent (or manageably inconsistent) fusion of networked, myopic sensors
  • IT-2: Fusion of heterogeneous sensors in unstructured and uncertain environments
  • IT-3: Wireless networks, network communication and information theory
research concentration areas
Research Concentration Areas
  • RCA-1: (Self-)Calibration
  • RCA-2&3: Fundamental limits on fusion, network information theory, tradeoffs in local vs global processing
  • RCA-4: Bounds & characteristics of algorithms to ID minimum resources needed to detect, estimate, track…
  • RCA-5: Fusion Algorithms
  • RCA-6: Distributed Algorithms with guarantees on global behavior (both positive & negative!)
  • RCA-7: Create events/data for experiments and demos
funding timing and staffing
Funding, Timing, and Staffing
  • We are 3 years, 1 month into this program
    • Funding: We are on plan
      • Includes adjustments for delays in funding and other ARO-approved variations (e.g,. Sanjoy Mitter’s time this fall)
  • Principal Faculty/Investigators
    • Willsky, Mitter, Jaakkola, Fisher, Cetin, Tsitsiklis (MIT); Kulkarni, Verdu (Princeton); Kumar (Illinois)
  • Numerous post-docs, visitors, and grad students
    • MIT (19), Illinois (12), Princeton (12)
website continually growing record of accomplishments and activities
Website: Continually growing record of accomplishments and activities
  • The Website:
publications presentations results
Publications, Presentations, Results
  • Publications
    • Latest count: 113 publications
      • Includes a (growing) number of key invited journal papers
  • Presentations
    • Numerous internal and external talks
    • Continually growing record of invited, plenary, and keynote talks
    • Continuing participation in Battlefield Acoustics mtg.
  • Significant research results in all aspects of our intellectual agenda
    • See talks to follow, publications, summary at the end, website
a few of our industrial dod interactions
A few of our industrial/DoD interactions
  • With PARC (formerly Xerox PARC)
    • Joint Paper, Transition and Experimental Demo within SensIT program, Maurice Chu has joined PARC team
    • Transition of fusion methods to several programs (Raptor, DARPA DTT program (with SenTech), DARPA ISP Program)
  • ARO SBIR Topic A03-050
    • MURI research (Tsitsiklis) cited as foundational to the topic
  • With ARL: Numerous since last review
    • Visits to ARL by Verdu, Kumar
    • Battlefield Acoustics Mtg. (Willsky-Sadler, Pham, Srour, Moses)
    • Interactions with Sensors CTA (Falco, Moses)
    • Visits to MIT: Sadler, Moses
    • Extended follow-ups with ARL: Ihler, Fisher, Cetin, Malioutov
sampling of academic interactions
Sampling of Academic Interactions
  • Berkeley/Stanford MURI
    • Post-doctoral positions of Drs. Sekhar Tatikonda and Martin Wainwright
    • Continuing interchange and reciprocal visits
  • MURI on Battlefield Visualization
    • Interaction with Prof. Pramod Varshney
  • Ohio State University
    • Collaboration with Prof. Randy Moses
      • Through Sensors CTA
      • Reciprocal visits (Moses, Fisher)
      • Utilization of our network-constrained estimation algorithms in Prof. Moses’ work
      • Several collaborative research projects initiated
standing questions from the eab tac i
Standing Questions from the EAB/TAC - I
  • Time spent on the project
    • We are maintaining/exceeding levels anticipated (Mitter 4 mo., Willsky 3 mo., Kulkarni 2/3 mo., Kumar 2/3 mo., Jaakkola 2/3 mo., Verdu 2/3 mo.)
  • Cost-sharing
    • Substantial for faculty (Schools pay almost all AY time)
    • Even greater for students (More than twice as many students involved as are receiving direct support)
  • Plans for handling real data, for demos and/or paths to implementation
    • Variety of examples given in previous reviews
    • Further discussions embedded in talks this year
what we heard from the eab tac last year i
What we heard from the EAB/TAC last year - I
  • Significant praise
    • Caliber of research
    • Conscientiousness of our efforts to meet MURI objectives and respond to suggestions
  • Several issues/requests made
    • Allow more time for discussion and questions
      • Fewer talks with more time between for informal discussions during breaks
    • Expand interactions with ARL
      • See preceding list plus discussions embedded in today’s presentations
    • Enhance collaboration among investigators
      • Talks today will make that collaboration more apparent
what we heard from the eab tac last year ii
What we heard from the EAB/TAC last year - II
  • Issues/requests continued
    • Make sure to consider communication constraints in the context of fusion objectives as well as limitations of low power
      • Several talks address problems related to this
    • Is “optimal” processing required if it implies global communications; can’t one achieve adequate performance with more “local” fusion?
      • See later talks
    • Make sure work is relevant to sensor modalities of interest to the Army
      • One of the purposes of our interactions with ARL
      • Also, see several talks today
agenda i
Agenda - I
  • 8:30 – 9:15 Lavery, Willsky:Welcome/Overview
  • 9:15 – 9:50 Cetin:A Sparse Signal Reconstruction Perspective for Source Localization with Sensor Arrays
    • IT-2, RCA-1 (also ties to RCA-4)
  • 9:55 – 10:30 Fisher (Kulkarni/Verdu):Information-Theoretic Approaches to Data Association and Fusion in Sensor Networks
    • IT-2, RCA-1,5
  • 10:30 – 10:45 Break
  • 10:45 – 11:20 Willsky (Kumar):Network-Constrained Estimation
    • IT-1, RCA-4,5,6 (also ties to RCA-2&3)
agenda ii
Agenda - II
  • 11:20 – 1:00 Lunch
  • 1:00 – 1:35 Jaakkola (Tsitsiklis):Using Heterogeneous Data Sources and Sequential Resource Management
    • IT-1, RCA-4,5,6
  • 1:40 – 2:15 Kumar (Verdu/Tsitsiklis): Information Transfer in Wireless Networks for Distributed Sensing and Control
    • IT-2, RCA-2&3
  • 2:15 – 2:30 Break
agenda iii
Agenda - III
  • 2:30 – 3:10 Mitter/Chu/Willsky: Distributed Multiple Target Tracking and Information Architecture for Designing Applications on Ad Hoc Sensor Networks
    • IT-1, RCA-4,5,6
  • 3:10 – 3:30 Willsky:Summary
  • 3:30 – 4:30 Government Caucus
  • 4:30 – 5:00 Preliminary Debrief