Time Difference of Arrival (TDOA) Estimation Using Wavelet Based Denoising

Abstract

The localization of mobile wireless communication units is studied. The most important method of localization is the time difference of arrival (TDOA) method. The wavelet transform is used to increase the accuracy of TDOA estimation. Several denoising techniques based on the wavelet transform are presented in this thesis. These techniques are applied to different types of test signals as well as the GSM signal. The results of the denoising techniques are compared to the ones obtained using no denoising. 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
Mar 01, 1999
Accession Number
ADA360774

Entities

People

  • Unal Aktas

Organizations

  • Naval Postgraduate School

Tags

Communities of Interest

  • Biomedical
  • Energy and Power Technologies
  • Space

DTIC Thesaurus Topics

  • Accuracy
  • Angle Of Arrival
  • Computers
  • Fourier Analysis
  • Frequency Bands
  • Global Navigation Satellite Systems
  • Global Positioning Systems
  • Mobile Phones
  • Multiple Access
  • Navigation
  • Navigation Satellites
  • Radio Equipment
  • Signal Processing
  • Time Division Multiple Access
  • United States
  • Wavelet Transforms
  • Wireless Communications

Fields of Study

  • Engineering

Readers

  • Acoustical Oceanography.
  • Computer Networking
  • Image Processing and Computer Vision.