Localization of Wireless Emitters Based on the Time Difference of Arrival (TDOA) and Wavelet Denoising

Abstract

The localization of mobile wireless communication units using time difference of arrival (TDOA) is studied. The wavelet transform is used to increase the accuracy of TDOA estimation. Several denoising techniques based on the wavelet transform are presented. These techniques are applied to different types of test signals and to a simulated baseband GSM signal. The results of the denoising techniques are compared to the ones employing no denoising in terms of the mean square error. The denoising techniques allow a 28 to 81 percent improvement in the TDOA estimation.

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Document Details

Document Type
Technical Report
Publication Date
May 01, 1999
Accession Number
ADA363100

Entities

People

  • Ralph D. Hippenstiel
  • Tri T. Ha
  • Unal Aktas

Organizations

  • Naval Postgraduate School

Tags

Communities of Interest

  • Energy and Power Technologies
  • Materials and Manufacturing Processes
  • Space

DTIC Thesaurus Topics

  • Accuracy
  • Angle Of Arrival
  • Artificial Satellites
  • Engineering
  • Fourier Analysis
  • Frequency Bands
  • Global Navigation Satellite Systems
  • Global Positioning Systems
  • Mobile Phones
  • Multiple Access
  • Navigation
  • Navigation Satellites
  • Random Variables
  • Signal Processing
  • Time Division Multiple Access
  • Wavelet Transforms
  • Wireless Communications

Fields of Study

  • Engineering

Readers

  • Image Processing and Computer Vision.
  • Radio communications and signal processing.