Sensor Localization Using Radio and Acoustic Transmissions from a Mobile Access Point

Abstract

We consider the problem of sensor node localization in a randomly deployed sensor network, using a mobile access point (AP). The mobile AP can be used to localize many sensors simultaneously in a broadcast mode, without a preestablished sensor network. We consider a multi-modal approach, combining radio and acoustics. The radio broadcasts timing, location information, and acoustic signal parameters. The acoustic emission may be used at the sensor to measure Doppler stretch, time delay, received signal strength, or angle of arrival. We focus on the case of narrowband Doppler shift in this paper, and we present a maximum likelihood estimator for sensor localization and show that its performance achieves the Cramer-Rao bound.

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Document Details

Document Type
Technical Report
Publication Date
Nov 01, 2006
Accession Number
ADA480934

Entities

People

  • Brian M. Sadler
  • Chin-chen Lee
  • Lang Tong
  • Richard J. Kozick

Organizations

  • Bucknell University

Tags

Communities of Interest

  • Sensors

DTIC Thesaurus Topics

  • Abstracts
  • Accuracy
  • Acoustic Signals
  • Acoustics
  • Angle Of Arrival
  • Atmospheric Motion
  • Detectors
  • Doppler Effect
  • Estimators
  • Frequency
  • Frequency Shift
  • Measurement
  • Networks
  • Physics
  • Sensor Networks
  • Signal Processing
  • Simulations

Readers

  • Acoustical Oceanography.
  • Computer Networking
  • Statistical inference.