Target Tracking in Multipath Environments - An Algorithm Inspired by Data Association

Abstract

Many wireless sensor networks (WSN) use time of arrival (TOA) based ranging to localize and track the nodes in the network. In non-multipath environments the channel impulse response (CIR) will exhibit a single peak which corresponds to the direct line-of-sight (LoS) path. In multipath environments, however, the CIR will often contain multiple peaks, and it is not known which peak, if any, is due to the direct LoS path. This problem is similar to the data association problem faced by many target tracking systems. Inspired by this observation, a new algorithm is presented in this paper for target tracking in multipath environments. The proposed algorithm is based on the multidimensional assignment formulation for data association. Through simulations the effectiveness of the proposed algorithm is confirmed.

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Document Details

Document Type
Technical Report
Publication Date
Jul 09, 2009
Accession Number
ADA533097

Entities

People

  • D. Humphrey
  • M. Hedley
  • T. Sathyan

Tags

Communities of Interest

  • Materials and Manufacturing Processes
  • Sensors

DTIC Thesaurus Topics

  • Accuracy
  • Algorithms
  • Data Association
  • Detectors
  • Environment
  • Estimators
  • Global Positioning Systems
  • Kalman Filters
  • Multitarget Tracking
  • Networks
  • Probability
  • Sensor Networks
  • Simulations
  • Target Tracking
  • Targets
  • Time Division Multiple Access
  • Wireless Sensor Networks

Fields of Study

  • Computer science

Readers

  • Computer Networking
  • Computer Vision.
  • Explosive Engineering.