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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 activities

  • 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 activities

  • 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 activities

  • 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 activities

  • 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 activities

  • 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 activities

  • 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 activities

  • 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 activities

  • 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 activities

  • 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