Quality Tradeoffs in Object Tracking with Duty-Cycled Sensor Networks

Abstract

Extending the lifetime of wireless sensor networks requires energy-conserving operations such as duty-cycling. However such operations may impact the effectiveness of high-fidelity real-time sensing tasks, such as object tracking, which require high accuracy and short response times. In this paper, we quantify the influence of different duty-cycle schemes on the bearings-only object tracking efficiency. Specifically, we use the Maximum Likelihood localization technique to analyze the accuracy limits of object location estimates under different response latencies considering variable network density and duty-cycle parameters. Moreover, we study the tradeoffs between accuracy and response latency under various scenarios and motion patterns of the object. We have also investigated the effects of different duty-cycled schedules on the tracking accuracy using acoustic sensor data collected at Aberdeen Proving Ground, Maryland, by the U.S. Army Research Laboratory (ARL).

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Document Details

Document Type
Technical Report
Publication Date
Jan 01, 2010
Accession Number
ADA528943

Entities

People

  • Chatschik Bisdikian
  • Lance Kaplan
  • Mani B. Srivastava
  • Sadaf Zahedi

Organizations

  • United States Army Research Laboratory

Tags

Communities of Interest

  • Materials and Manufacturing Processes
  • Sensors

DTIC Thesaurus Topics

  • Accuracy
  • Acoustic Detectors
  • Algorithms
  • Detection
  • Detectors
  • Efficiency
  • Electrical Engineering
  • Estimators
  • Military Research
  • Monte Carlo Method
  • Networks
  • Numerical Analysis
  • Probability
  • Scheduling (Production)
  • Sensor Networks
  • Simulations
  • Wireless Sensor Networks

Fields of Study

  • Computer science

Readers

  • Acoustical Oceanography.
  • Adaptive Control and Estimation with Uncertainty in Dynamic Systems.
  • Distributed Systems and Data Platform Development